Ondulin roofing technology

 Ondulin roofing technology

Ondulin is a durable and durable roofing material with high performance characteristics. Manufacturers give a 15-year coverage guarantee, but in practice, the service life is much longer. At the same time, the composition of the material does not include asbestos, which makes it both environmentally friendly and resistant to environmental influences. The coating is suitable for all climatic conditions, as it is not afraid of either heat or frost.

Lathing for ondulin

Ondulin is a lightweight roofing covering. The mass of one sheet does not exceed 6 kg, which allows you to save on materials for the lathing, but this part of the roof is mandatory, since it is impossible to fasten the roof only to the rafters.

Material for lathing for ondulin

For arranging the crate for ondulin, conifers are most often used. This is due to the high resin content, which prevents rotting of the wooden parts of the roof. The advantage is the low cost of the material.

The choice of material is influenced by the angle of inclination of the slopes:

  • 5–10 ° - board, moisture resistant plywood, OSB boards, unedged timber;
  • 10-15 ° - bars with a section of 40 * 50, 50 * 50, 50 * 60 mm;
  • more than 15 ° - bars with a cross section of 40 * 50, 50 * 50, 50 * 60 mm, but located with a large step.

The small mass of ondulin allows you to choose a cheaper material for the lathing

For the lathing for ondulin, it is important to choose a material of equal thickness, otherwise the height differences will be clearly visible. It is also necessary to pay attention to the moisture content of the wood, it should not exceed 20%.

It is possible to increase the strength and stability of lathing timber by applying a primer, for example, "Senezh".

Calculation of the pitch of the crate

The quality of the installation of the material and the service life of the roof are directly affected by the correct calculation of the sheathing step. This parameter depends on the slope of the roof:

  • 5–10 ° - solid lathing (the material does not need to be laid end-to-end, the gap between the sheets can be 2–5 cm, it is better to lay them in a checkerboard pattern);
  • 10-15 ° - step 45 cm;
  • more than 15 ° - a step of 60 cm, but in regions with increased snow load, it can be reduced to 45 cm.

The smaller the angle of inclination of the slope, the smaller the sheathing step should be

In places of increased load, only a continuous flooring is equipped. These are:

  • the area of ​​abutment of the roof to the walls;
  • around the chimney;
  • around dormer and dormer windows;
  • near the cornice;
  • under the valleys;
  • by the skate.

The first two boards of the sheathing should be laid with a smaller pitch than all the others.

Timber calculation

Knowing the parameters of the roof and boards required for arranging the lathing, you can calculate the amount of lumber:

  1. Let's say the roof has a 15 ° slope. For such a roof, bars with a cross section of 50 * 50 mm are suitable. The step of the crate is 60 cm. The calculation will be made for a slope with dimensions of 3 * 5 m.
  2. The first two and the last two (near the ridge) boards are stacked close or with a small gap. The total width of this part of the lathing is 5 x 3 = 15 cm. This means that the calculation taking into account the step must be done for the remaining roof space of 300 - 15 = 285 cm. The rapport is 60 + 5 = 65 cm.
  3. Now the length of the remaining uncovered part of the roof must be divided by the rapport: 285/65 = 4.4, that is, there will be 4 more horizontal rows of the crate. The total number of rows is 7, that is, the first two boards, 4 horizontal sheathing rows and the last board.
  4. The length of each row is 5 m, which means that the total length of the board with a section of 5 * 5 cm can be calculated by the formula: 5 x 7 = 35 m.
  5. The resulting number must be multiplied by two, which is equal to the number of slopes: 35 x 2 = 70 m.

For a gable roof with a slope size of 3 * 5 m and an inclination angle of 15 °, you need to purchase 70 running meters of lathing boards. The number of boards for the counter-lattice is equal to the number of rafters.

Counter grill provides the required ventilation gap

Stages of installation of the lathing

The lathing is attached over the waterproofing. The order of work is as follows:

  1. Installation of a counter-lattice, which consists of beams parallel to the rafters. This construction increases the strength of the lathing, as well as equips the necessary ventilation gap.

    First, you need to mount the vertical bars of the counter-lattice, and then the horizontal bars of the lathing, which will create a ventilation gap.

  2. Securing the starter bar. It must be positioned strictly in a straight line of the eaves overhang, but make sure that this board does not protrude beyond the overhang. For the starting beam, a material 10-15 cm wider than all other sheathing beams is chosen.
  3. Fastening the second lathing beam. It should be located with a small gap from the first. Only self-tapping screws can be used to fix the beams. Nails will lead to the gradual destruction of the wood, and then a decrease in the life of the structure. If it is not possible to obtain suitable screws, they can be replaced with large slate nails.

    You can fasten the lathing beams with galvanized nails.

  4. Installation of lathing boards in compliance with the step, for which it is convenient to use a jig, which is a bar, the length of which is equal to the size of the lathing step. If the length of the beams is less than the length of the slope, then it is recommended to lay them in a checkerboard pattern. This principle is also used when arranging a solid crate.

    Sheets of solid crate must be stacked in a checkerboard pattern

  5. Sealing areas with increased stress. The method depends on the location. For example, at the junction of the slopes, you need to install two additional beams that will serve as a support for the ridge element. In the places where the ventilation or chimney, dormer window or the place of abutment to the wall are located, a continuous crate is arranged, and the boards are located parallel to the ridge.

Counter grill for ondulin

The counter grill allows you to create a ventilation gap to remove steam and condensate. This measure, first of all, is needed when arranging a roof in a heated house. If a cold roof is formed in the utility room, then there is no need to mount a counter-lattice, since the attic of such a building is open and excess moisture is removed by natural ventilation.

Two ventilation gaps are required to remove steam and condensate:

  1. It is formed between the insulation and the moisture-windproof film. It removes steam that has penetrated the insulation through installation defects and damage in the vapor barrier. The height of the first ventilation gap is 4–5 cm. The wind-moisture protective film is laid on the rafters and fastened with counter-lattice beams 40–60 mm high.
  2. Between the wind and moisture protection film and the roof covering. It removes condensate and moisture that has got under the roof from the outside. The height of the second ventilation gap is determined by the dimensions of the counter-lattice bars and is equal to 4–6 cm.

The counter lattice is installed only in the roof of heated buildings

Installation of an ondulin roof

Installation of an ondulin roof consists of several stages. Careful adherence to the technology of work on each of them guarantees the high quality of the final result.

Material calculation

Correctly performed calculation of ondulin sheets will allow you to install the roof without interruption. In addition, the material from different batches may differ in shade, which will be noticeable already on the finished roof, so you need to buy sheets in sufficient quantities.

The calculation takes into account:

  • sheet size. Standard parameters are considered to be 2 m length and 0.95 m width, the presence of 10 waves;
  • the size of the gaps, which differs depending on the angle of inclination of the roof (up to 15 ° - 30 cm when arranging a continuous sheathing, more than 15 ° - 15–20 cm);
  • the amount of lateral overlaps also depends on the slope of the slopes (up to 15 ° - 2 waves, more than 15 ° - 1 wave).

Each sheet of ondulin has a useful area, which depends on the overlaps

Overlaps and overlaps reduce the usable area of ​​the material. When buying ondulin to the calculated amount, you need to add another 10-15% of the stock for scrap, battle and trimming (15-20% if the roof has a complex shape with a large number of transitions and corners).

Knowing these parameters, you can easily calculate the required amount of material by following the instructions:

  1. Calculate the area of ​​the rays. To do this, you can use mathematical formulas. For example, to find the area of ​​a rectangle, you need to multiply the length of one side by the length of the second. We will make a calculation for a roof with linear slope parameters of 10 m (length of the ridge beam) and 3 m (length of the eaves overhang). The area of ​​such a slope is 10 x 3 = 30 m2... Accordingly, the area of ​​a regular gable roof is 30 x 2 = 60 m2.
  2. Calculate the effective area of ​​the ondulin leaf. This parameter depends on overlaps. For example, the angle of inclination of the roof is 15 °, so the overlap will be 15 cm, and the side overlap will be 1 wave. Based on these parameters, the size of the ondulin sheet will be 195 - 15 = 180 cm (1.8 m) in length and 96 - 9.5 = 86.5 cm (0.86 m) in width. The useful area is calculated using the mathematical formula: 1.8 x 0.86 = 1.55 m2.
  3. Calculate the right amount of material to cover the entire roof. This must be done by dividing the total area of ​​the slopes by the area of ​​the ondulin sheet (in the calculations, you need to use the useful area parameter): 60 / 1.55 = 38.7. You need to round up to 40 sheets.
  4. Calculate the stock. To the resulting number of sheets of material, you need to add 10% for the stock or 40 x 0.1 + 40 = 44 sheets.

For a gable roof with a slope of 15 ° and a slope size of 10 * 3 m, it is necessary to purchase 44 standard sheets of ondulin. The price of one sheet is from 270 rubles (depending on the region and type of material). This means that the minimum costs will be approximately 12 thousand rubles.

Ondulin roofing device

Ondulin is a coating that does not necessarily require a roofing pie. This material does not lose its operational properties from the absence of hydro or vapor barrier, insulation, but if the house is residential, then insulation is mandatory. In this case, it is recommended to equip the roofing cake with the following layers (from bottom to top):

  • vapor barrier film (Ondutis R70 film can be used in combination with ondulin);
  • insulation (mineral wool or expanded polystyrene);
  • waterproofing membrane (Ondutis SA130 if there is no ventilation gap and Ondutis SA115 if there is a ventilation gap);
  • counter-lattice;
  • crate;
  • ondulin.

Residential buildings are recommended to be insulated

Step-by-step instructions for installing ondulin sheets

You can do this yourself if you strictly follow the technology. Sequence of work:

  1. The first sheet is laid. It needs to be placed in the lower right corner of the ramp. It is necessary to arrange the first sheet in such a way that it extends 5 cm beyond the cornice. Beforehand, a cornice filler with ventilation gaps must be placed under the sheet. If ventilation of the attic is not planned, then this step can be skipped.

    It is necessary to start fastening the ondulin from the lower right corner of the slope

  2. The sheets are attached to the sheathing beam with special nails (20 pieces per 1 sheet), which are arranged in several rows (the bottom row is in each wave, the next row is in every second wave crest). As a rule, nails for ondulin have a PVC or propylene head.

    Ondulin sheets are fastened with two rows of nails

  3. The first row is laid, while the calculated overlap must be taken into account. You need to fasten the sheets with nails in a certain sequence: first, fix the sheet on both sides, then place the nail in the middle of the sheet in a wave, and only then hammer the fasteners in the right place.

    To fasten the ondulin, you need to use special nails with caps

  4. The remaining sheets of roofing material are mounted. For the second row, you need to make a vertical cut (with a regular hacksaw) for the first sheet to ensure the staggered layout. The ondulin sheets of the second and subsequent rows are located with an overlap.

    It is necessary to lay the sheets of ondulin in a checkerboard pattern, taking into account the calculated dimensions of the overlap and overlap

  5. The joints are sealed. If it is necessary to waterproof the joints, use the Onduflesh insulating tape. It is specially designed to work with ondulin. The tape has an adhesive layer for easy handling. The same material is also effective in the case of insulating the joints of the roofing material with the dormer windows, which will give the roof a finished look.

    To seal joints and abutment points, you can use the tape "Onduflesh"

A stretched rope can be used to level the sheets of ondulin or to ensure the evenness of a row of nails. It is attached to the wind boards at the required distance from its edge, while taking into account the dimensions of the ondulin sheet and the calculated overlap parameter.

Video: ondulin laying technology

Installation of additional elements

Completion of the roof is given by additional elements that are mounted after laying the ondulin:

  1. Skate. It is mounted on the top of the roof, at the junction of the slopes with an overlap of 12 cm. To make the ridge yourself, you need to bring the top sheets through the junction and nail at the top of the opposite slope. It is recommended to perform such work in hot weather when ondulin softens. When installing the finished ridge, you must first lay an insulating tape (if the roof is not ventilated, then you can use a sealant). This element is attached to a solid crate for each wave of ondulin. Place the nails at a distance of 50–70 mm from the edge of the ridge. The ends of the additional element are closed with plugs made of plywood or boards with a round top.

    The ridge attachment point must be additionally waterproofed, and the cracks must be sealed with a sealant

  2. Apron. This element is used for arranging junction points, for example, to a wall or when leading a pipe through the roof. The apron consists of two parts: one is laid under the roofing material, and the second is attached to the front of the ondulin and the adjacent wall with galvanized nails. Additionally, the joints of the elements are recommended to be treated with a sealant.

    The junction points to the wall or pipe are equipped with special aprons

  3. Endova. It can be internal and external. The inner valley is mounted on the lathing (in this place it should be solid) under the roofing material. The first element is laid flush with the cornice, all subsequent ones - with an overlap of 15 cm. After that, the ondulin is installed, which must be cut horizontally using a wood saw or circular saw. It is not necessary to lay the sheets of ondulin end-to-end, the allowance from the axis of the valley should be 5–10 cm. The external valley, in addition to its practical function, also performs a decorative one. This additional element should overlap the ondulin sheet by 5 cm or more. Work begins from the side of the cornice. Fastening is carried out with galvanized nails with a diameter of 2-3 mm with special caps to prevent leakage at the attachment points. The fixation step is 20–30 cm. It is necessary to step back from the edge by a distance of about 20–30 mm. If it is necessary to join several elements, one must not forget about the necessary overlap of 10 cm, and in the case of the starting lower elements - 20 cm. The joints can be additionally sealed with silicone sealant.

    Ondulin roof endow consists of two parts: inner and outer

Arrangements for the passage of the pipe through ondulin

When installing a roof from ondulin on a residential building, a ventilation or chimney pipe is required. This roof seat must comply with the following rules:

  • the chimney should be located as close to the ridge as possible, but far from the dormer windows;
  • to strengthen the chimney, materials that are too rigid cannot be used; for this, a special additional element made of ondulin is provided.

The technology for arranging the passage of a pipe through ondulin is as follows:

  1. First, you need to install additional battens of the crate.
  2. Next, attach a special covering apron, which must be laid in such a way that it covers one wave on each side of the pipe. It can be nailed directly to the roof covering.

    It is recommended to place the pipe on the roof of ondulin close to the ridge

  3. Now you need to seal the joints, for which the Onduflesh tape is suitable.

    "Onduflesh" is a sealing material specially developed for ondulin

Ondulin over the old roofing made of slate or roofing felt

Ondulin is a picky roofing material, therefore, when re-covering the roof, it is not necessary to remove the old roof. But in this case, careful surface preparation will be required. Need to:

  • clean the roof from debris, moss, leaves;
  • inspect the surface and eliminate all swollen areas;
  • cut off torn pieces of roofing material (or fix them, if it's easier), remove slate fragments.

Otherwise, the ondulin installation technology is no different. After preparing the surface, you need to equip the sheathing over the old roof. If it is slate, then the actions are as follows:

  1. First, prepare all the necessary materials and tools, in particular, directly ondulin and timber for the lathing. As for the tools, you cannot do without a hammer, a hacksaw for wood, a screwdriver, a square and a pencil with a tape measure. It is also recommended to additionally install a ladder that will help you move around the roof.

    Ladder ladder makes movement on the roof safer

  2. On the beams for the vertical lathing, make cuts to the size of the old ridge, on the beams for the horizontal lathing - in the places where the overlap of the slate sheets is located.
  3. Make holes in the slate at the attachment points of the longitudinal lathing. In this case, you need to pay attention to the location of the slate nails, since there is an old crate under them. It is recommended to screw fasteners for ondulin next to these nails.
  4. Install vertical beams in every fifth wave, fixing them with galvanized self-tapping screws 8 cm long with an installation step of no more than 50 cm.First, it is recommended to nail the two outer beams, then pull a rope between them, along which all the rest will be aligned.

    A rope stretched between the two extreme beams will allow you to install the sheathing elements as evenly as possible

  5. Install horizontal beams with a pitch of 61 cm.
  6. Try on the sheets of ondulin, taking into account that the overhang of the new roofing material should be no more than 7 cm, and the extension from the end part should be 1 wave. You need to do the fitting in order to determine the size of the top sheet. After that, you can fix the sheets of ondulin, placing nails in each wave from the bottom edge, and in the middle of the sheet in a checkerboard pattern. The overlap of the second row is 17 cm, in the place of the ridge - 12 cm.

    Too large an overhang cannot be made, since such material will be blown away by the wind

If ondulin is mounted on roofing material, then you need to follow this plan:

  1. Lay the beams along the slope, fixing them with galvanized nails 12 cm long.
  2. Attach the lathing beams in 60 cm increments.

    When installing ondulin on an old roof, a crate is also equipped

  3. Place ondulin and fix it according to the standard scheme.

    You can also lay ondulin on an old roof without dismantling the existing roofing material

Video: overlapping the old roof with ondulin

Ondulin roof repair

Repair work may be necessary if cracks appear on the sheets, through which moisture can penetrate into the roofing cake. To repair small sections of the roof (chips, cracks, etc.), use a special adhesive repair tape or sealant. The repair plan is as follows:

  1. Clean the surface from dirt, debris, degrease with white spirit or gasoline.
  2. Remove the protective paper layer from the adhesive tape of the required length (a piece of material should be 3-5 cm larger than the crack on each edge), then stick this piece to the damaged surface.
  3. Press the tape carefully, smooth it, paint it in the color of the roofing if necessary.

    Minor damage can be repaired with duct tape

If the damage is through with a diameter of up to 8 mm, then a patch can be applied:

  1. Pick up a piece of material of the right size. The patch should overlap the hole in width by 1 wave on each side, in length - by 15–20 cm on each side.
  2. Clean the roof surfaces and patches with a metal brush and degrease.
  3. Apply bituminous sealant to both surfaces and reinstall the patch.

    The sealant is applied to the roof surface and to the patch

  4. Bring a large patch under the sheet laid above and nail it to the crate along the crests of the waves.

In case of more serious damage, sheets or additional elements are replaced. In this case, it is necessary to dismantle not only the damaged sheet, but also the neighboring ones, since this is the only way not to damage them when laying new material. The replacement process itself is as follows:

  1. The damaged sheet is removed. Nails are pulled out or cut off with a grinder.
  2. The fastening of the two upper and one side sheets is loosened and partially removed.
  3. A new sheet of ondulin is wound under the layer laid above and attached in accordance with the instructions.

A special ladder of suitable length is capable of ensuring safety during repair work. To move, you need to step on the middle of the step, while you cannot hold on to the edges, as this can lead to the fall of the stairs.

Ladder ladder provides the necessary level of safety when working on the roof

Video: repairing minor damage to the roof from ondulin

Ondulin is a roofing material with good performance characteristics. Its installation can be done by hand, and on top of the old covering made of slate or roofing material. Periodic inspection of the roof and its cleaning will significantly increase the life of the roof with minimal repairs.

Extension to the shed: the best options

A change house with a terrace has a lot of advantages, one of which is the simplicity of construction. Even a person who does not have the proper experience in this matter can cope with construction work.

Foundation construction

The crate is the basis of the summer cottage. To create it, it is necessary to use high-quality materials, then the change house will serve for a long time.

Change house with a terrace

In addition, it is important to take care of the frame construction project. If the calculations are incorrect, then this will cause deformation and destruction of the building.


The base of any structure is the foundation. When laying it, you need to make sure that it will not come into contact with moisture and various plants. The bases for a wooden change house with a veranda are made of concrete blocks. They are placed strictly in the level and fixed with staples.

Even at this stage, you need to take care of laying the insulation. It is mounted between stone and wood. Most often, roofing material is used for this. Attach the frame of the change house to the base. For this, metal sheets and dowels are used. But what kind of strip foundation for a foam block house should be used, this information will help to understand.


If you are going to equip an underground floor, then first you need to find out about the level of occurrence of groundwater in your area. Since moisture is unacceptable for the foundation, then when arranging the subfloor, it is necessary to thoroughly isolate the structure from water.

For these purposes, it is worth using sheet waterproofing coatings. You can buy them at any hardware store. Drainage systems will act as additional protection. They prevent the subfloor from being flooded. But how to insulate the floor on the veranda, and what materials should be used, is detailed in this article.


These are load-bearing parts that are the basis for any pitched roof. Their installation should take place at a distance of 60 cm from each other. They are fixed with self-tapping screws and metal corners. The quality characteristics of the rafters must be at a high level. Do not forget that their main function is to support the weight of the roof and the draft.


Carrying out construction work on the construction of a change house with a veranda, it is necessary to calculate the parameters of the roof and rafter system. This calculation assumes the calculation of loads that affect the structure. The weight of the roof has yet to be taken into account. But what a bathhouse with a garage under one roof will look like will help to understand the photos and videos from this article.

When arranging flooring in change houses, nothing complicated needs to be done. The first step is to install the insulation. It is best to use a layer of high quality polyethylene. Fix the insulation with a stapler. Lay the lathing using a 10x10 beam. Cover the frame with a 1.5x2 floorboard on top. You can decorate the floor as you wish.

When laying the floor, it is necessary to process it with special compounds. Thanks to them, you can protect the flooring from moisture and various pests.

Which design of the country veranda is the most popular among gardeners, the photo and information from this article will help to understand.

But what country greenhouses and greenhouses look like, and which one to choose for yourself, this information will help to understand.

It will also be interesting to know how a country terrace looks like and how it can be built: https://2gazon.ru/postroiki/pristrojki/kak-postroit-terrasy-svoimi-rukami.html

You may also be interested in learning how to make a combined country shower and toilet.


Before finishing the change house, it is worth preparing the workspace. The first step is to fix the insulation and seal the seams and cracks with tape. Thus, the shed will become impervious to various weather conditions.

When all the preparatory activities have been completed, then you can proceed directly to the finishing. You can sheathe the change house using boards, chipboard panels and lining. You may also be interested in learning about how to decorate the walls of the bath inside.

The video shows the finishing of the change house:


Partitions remain the main element of the change house. Thanks to them, it is possible to delimit the space and save the thermal energy inside the room. The simplest and most convenient material is drywall. It is easy to install, inexpensive and retains heat well. If you use drywall, then it is necessary to make partitions in advance in the change house project in order to build the crate, taking into account the changes made.

On the video - a shed with a terrace:

How to choose material

What is the best material? To be sure of the quality of the used roofing material, when choosing, you need to consider a few tips:

  1. Life time ... This indicator is one of the most basic, since your roof should not undergo frequent repairs and maintenance. Durability is influenced not only by the type of material, but also by the quality of the installation. The undoubted leaders here are metal tiles, corrugated board, slate and ondulin.
  2. Features and construction of the roof ... If you need to build a roof for outbuildings, then you should not purchase expensive materials. A suitable option would be ordinary slate. If you need to arrange a residential building, then the choice must be approached thoroughly. If you have the means, you can use copper or aluminum roofing.

On the video calculation of roofing material for the roof:

Selection of roofing materials - Ecohome

1. Asphalt shingles:

Asphalt roof tiles © Ecohome

We'll start with shingles to get them out of the way because choosing an environmentally friendly, durable roofing starts with ditching the idea of ​​installing asphalt.

Highly embodied energy, rarely if ever used, is rapidly degraded by ultraviolet rays, releases solvents into the air when exposed to sunlight, and because they are usually dark in color, they contribute to the heat island effect of warmer temperatures in urban areas. conditions. area.

Each year, 11 million tonnes of shingles are sent to landfills in the United States, accounting for approximately 8% of total construction waste.

Shingles is the default roofing, mostly due to the price, but after a short time when you have to replace them, they won't be that cheap. And as the least durable options, they pose the greatest risk of water leakage and damage to your home.

Service life and cost: 12 to 20 years depending on quality, weather and debris from surrounding trees This is the cheapest roofing material for a single installation, but its short lifespan will make it the most expensive choice over the life of a home.

2. Metal roofs:

Metal roof © Ecohome

Even though it takes a lot of energy to extract and render metal tiles, it will likely last you a lifetime and at its end it is 100% recyclable.

The only recommended maintenance is after about 25 years, when you may need to replace the screws because over time the rubber gaskets will break when exposed to UV light.

Some profiles snap into place at one edge that covers the screws from the previous sheet. This design is often slightly more expensive, but removes the need for future panel replacements.

Depending on your field and the location of the entrances, it is often necessary to install snow deflectors for safety, because when the snow wants to come down, you really don't want to be under it.

Another feature is that depending on the style of the roof and the insulation it can be a little noisy when it rains, a lot of people love this feature, myself included.

Service life and cost: A well-installed metal roof will easily last 50 years and probably much longer. This is 2-3 times more expensive than asphalt, but will likely be the only roof covering you will ever install.

3. Wooden roof (cedar shingles):

Cedar cocktails © Old House Store

Pros: High resistance to moisture, decay and wind, very low energy consumption. They make for a beautiful, authentic and natural roof. Since it is a completely natural material, it can be disposed of more responsibly than other materials at the end of its life. higher than average fire hazard and may need to be painted every 5-15 years depending on the type of finish.

Service life and cost: Their lifespan is typically over 30 years, with warranties ranging from 25 years or more. The cost is high given its relatively long lifespan.

4. Composite roof tiles:

Composite roof tiles © Enviroshake

They are sometimes made from recycled fiberglass and asphalt, but the recycled content offered by manufacturers is still quite low.

Pros: High resistance to insects, rot and adverse weather conditions, long service life with minimal maintenance.

Minuses: Time-consuming and non-recyclable plant.

Service life and cost: Often the warranty period is 50 years, the cost of a metal roof is about 3 times higher than that of asphalt.

5. Rubber roofs:

Great for old tires with a high recycled content. Shredded rubber from tires is melted and shaped to look like many other shingle designs.

Pros: Very durable, very low maintenance, available in a wide range of styles and colors.

Disadvantages: Higher installation costs, but like many others, they provide long-term net savings through increased service life.

The natural flexibility of rubber makes them slightly more susceptible to damage in extreme winds, but no more than conventional roof tiles. They've also been known to smell like tires for a while, but that goes away after a couple of weeks.

Service life and cost: Most rubber roof tile manufacturers offer at least a 30-year warranty, and some offer up to 50 years or even a lifespan. Relatively high cost.

6. Green Roofs - Intense and Extensive:

Green roof © Ecohome

An intensive green roof, also known as a "roof garden", refers to planting zones that are 6 inches deep and deeper. Deeper soil supports a greater variety of plants such as vegetables, shrubs, and even small trees.

Extensive roofs are designed primarily to provide high water management efficiency and thermal benefits while keeping the overall roof weight to a minimum. The soil depth ranges from 1.5 to 6 inches.

Extensive green roof:

Pros: The green roof blocks UV rays, reduces the heat island effect in the city, provides excellent acoustic and thermal insulation, and is easy to install and can usually grow abundant drought tolerant plants such as thyme, rosemary or green onions.

Minuses: They are heavier than a conventional roof and may require structural reinforcement, and due to the depth of the soil, they are not conducive to gardening.

Service life and cost: You can expect them to last 50 years or more if installed correctly the cost can be high to get the professionals done, but if the work is done in-house with a good work team, cheaper options are available.

As an alternative to conventional flat roof roofing, although it is much more expensive, green roofing can still have a higher return on investment as they last very long and help save heating and cooling costs.

Intensive green roof (with garden):

Pros: It blocks ultraviolet rays and reduces the heat island effect, provides good acoustic and thermal insulation, and deeper soil allows food production and good rainwater absorption, reducing storm runoff.

Minuses: A vegetable garden obviously requires a lot of maintenance, an irrigation system, and you will need structural reinforcement to support the added weight. Making roof access to enjoy the space can be expensive, so consider the cost as well.

Service life and cost: This will last 50 years when properly installed, the cost is slightly more than an expansive green roof and offers similar energy savings.

7. Fascia and soffit:

Metal soffit and fascia © Kaycan

Fascia and soffit have more to do with your roofing system than siding, so we'll cover that here Your fascia is likely to see quite a bit of the weather and is often difficult to get to, think well about durability here.

Wood paneling is a nice addition to the home, but requires a lot of maintenance. It will usually see a lot more rain than your siding, so you will likely be repainting it sooner than anywhere else.

The metal panel is more expensive, mainly due to installation costs, but the lifespan and low running costs provide a pretty good return on investment.

Fascia painting © Ecohome

Depending on your batch, roofline, and the size of the overhangs, repainting your fascia can be a real challenge. Installing a metal panel requires special metal bending equipment, which means you will likely have to have someone else do the initial installation. and you will probably never need to perform maintenance or replace it.

If you are going with a metal bezel, make a soffit as well. It offers excellent ventilation as well as a very low maintenance level that provides excellent ventilation in attics.


A flat roof looks and works very differently compared to a traditional sloped roof such as shingles, shingles, or metal. Although it is not intended to be used as a drainage system because it has a low slope, a flat roof can still protect your home from leaks and harsh weather. There is a wide range of advanced flat roof systems today that offer great pros and cons, durability and of course price.

In this tutorial:

Flat roofing materials
Installation cost
Material prices
Mounting options
The importance of isolation
Maintenance and repair
Unique applications and benefits
Energy efficiency
Environmental impact

Types of flat roofs

The classic flat roof is either almost completely flat or has a slight slope of 3 by 12 inches or less.

Most flat roofs are generally not as durable or durable as sloped roofs because the latter shed snow and rain much faster. However, over the past few decades, new and advanced materials have been developed. They are very durable, energy efficient and can compete with traditional roofs for durability.

There are three main types of systems that you can install on a flat roof:

1. Single - layer
2. Assembly
3. Spray application

Average flat roof cost:

Low End

$ 6815

Mid range

$ 8769

High end

$ 11211

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Single layer roof

EPDM (ethylene-propylene-diene monomer), PVC (polyvinyl chloride) and TPO (thermoplastic olefin) are the most popular single layer membranes.

Today, these three roofs are most commonly used in both commercial and residential construction. It is important to know that they are NOT equal in quality and durability. Each has very different formulations, durability characteristics and cost.

Single layer means only one layer of membrane as a waterproofing and weatherproofing surface. All membranes are 6 to 18 feet wide. The most commonly used are about 10 feet. Average thickness ranges from 45-90 mils. It is generally recommended to install a membrane that is at least 50 mils thick.


- Solar energy reflection and energy efficiency
- Some materials can be recycled
- Durability: high quality membranes will last up to 30-40 years
- Hot air welded systems (PVC and TPO) are waterproof
- Installations for self-assembly and repair of EPDM rubber is possible
- resistant to adverse weather conditions: snow, ice, rain, wind, fire
- roof garden or patio can be used


- Membranes with seams are prone to leakage (EPDM).
- External intrusions such as pipes, chimney, HVAC equipment can cause leaks without proper flashing work.
- Requires expensive installation and equipment for specialists (PVC and TPO).
- May be punctured by a sharp object, falling tree branches, etc.


There is a lot of competition between TPO and PVC membranes, and a heated debate over which is best.

Today, PVC roofing is considered the most durable. It is specially designed to stay pristine in a wide variety of adverse weather conditions (rain, snow, wind, sun, temperature fluctuations in hot and cold weather).

What's more, what makes PVC so strong is that the top and bottom layers of the membrane are nearly the same thickness.

In comparison, TPO has questionable durability as there is no one formula among manufacturers who are experimenting to make it durable, but cheaper than PVC. As with any product, we all know what happens when you try to lower prices by decrease in the quality of materials.

One factor that reduces the strength of TPO is the fact that the top layer (weathering surface) of the membrane (which provides durability) is actually thinner than the bottom layer. In most products, this ratio is 40/60.

Finally, most TPO roofs have poor thermal and solar resistance.


Low End

Mid range

High end

Materials (edit)

$ 3827

$ 4502

$ 5718

total cost

$ 9913

$ 11662

$ 14811

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Prefabricated roofs

Prefabricated roofs are manufactured using fusion layers of resin-rich paper and liquid resin with gravel, asphalt, coiled asphalt or modified bitumen. As the roof is installed, more and more layers are added to increase durability and durability, hence the name “building”.

Among them: 1. Tar and gravel 2. Modified bitumen 3. Roll asphalt

They are all considered obsolete by modern building standards. They are almost never installed in large commercial properties, but continue to be installed in some residential buildings due to their low cost.

Note that any type of assembly material requires a positive roof slope (at least 1/12 inch).


- Relatively cheap materials and installation costs
- Very low operating costs
- Resistant to foot movement, UV rays and punctures


- Difficult to find the source of the leak
- Short service life 10-15 years
- Expensive repairs that often do not solve the problem
- Very low energy efficiency
- Not environmentally friendly
- No flexibility in cold temperature conditions and not recommended for installation in Northern states

Coating with a painted roof

There are two main types:

1.Aspray foam insulation (sprayed directly onto the roof deck and then covered with an acrylic or urethane coating and a layer of rubble / sand.

2. Roof coverings (made for existing roofs and used to extend their service life by 10-15 years). Typically, they are installed on single ply, retrofit or low slope metal roofs.


- Seamless installation
- SPF foam can fit all roof shapes and sizes, including irregular ones
- Provides good insulation and energy efficiency (high R-value)
- No seams, which makes the coating waterproof
- Requires minimal maintenance
- Can be applied over existing roofs, eliminating the need for costly tear-off and disposal
- Can last up to 40 years with proper installation


- Very expensive. For example, silicone is one of the most expensive materials you can install.
- Complex installation process that requires a lot of technical knowledge. Should only be done by an experienced professional.
- More likelihood of system failure due to poor installation and contractor errors.
- SPF can only be set under certain weather conditions (very narrow range of temperatures and humidity levels).
- SPF is usually indicated for commercial buildings, not residential buildings.
- Aerosol roofs give off harmful vapors during installation

Installation cost

The average cost of replacing a 1,500 sq ft flat roof at home ranges from up to 8000-11000 US dollars, depending on the material you are using and the complexity of the installation.

The installation prices below are for very simple roofs, over 1000 sq. Feet. Your total price will vary based on many variables such as roof size and complexity, geographic region, etc. Any additional insulation and detail will increase your overall labor costs.

PVC membrane: $ 6.50 - 7.50 + per sq. Foot.

EPDM rubber: $ 5.50 - 6.50 + per sq. Foot.

SRW roofing: USD 6.0-7.0 per sq. Foot.

Modified bituminous and rolled asphalt roofs: $ 5.50 - 6.50 + per sq. Foot.

Foam roof: US $ 4.5-7 per sq. Foot.

You can use our flat roof calculator to quickly and accurately estimate replacement costs.

Material prices

Generally, the materials used on flat roofs are cheaper than sloped ones.


costs $ 1.50 per sq. Ft, making it the cheapest single layer membrane.

TPO is USD 1.70 per sq. Foot.

PVC is $ 1.90 per sq. Foot.

Modified bituminous and rolled asphalt roofs cost $ 1.30-2.20 per sq. Foot, depending on the number of layers.

Resin roofs are rarely installed, they must be ordered by special order, so their prices are not always available.

Foam roofing costs $ 1.55-2.25 per square foot for a 1.5-inch layer of foam.

Please note that all prices quoted above are for materials ONLY and do not include insulation.

Install shingles

$ 4872
average price

Install a metal roof

$ 10253
average price

Install flat roof

$ 8257
average price

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Installation types

A single layer roof is either fully glued or mechanically attached.

Fully glued method consists in gluing the membrane directly to the insulation or to the substrate.

Mechanically attached method consists in attaching each row of membrane to the roof deck using screws and barbed plates. Fasteners are typically 12 inches from the axis.

The most common problem with a fully glued installation (usually EPDM rubber) is that the seams are poorly glued, there are bubbles in the membrane and leaks inevitably occur.

The torch is used when installing modified bitumen and therefore can cause a fire for your home or commercial property.

EPDM is by far the most commonly installed single layer membrane for both residential and commercial applications. It is so popular because no special hardware is required to complete the installation.

We strongly recommend that you find a contractor who specializes in single layer roofing to ensure there are no leaks after installation. Many customers make the mistake of hiring specialized roofing (bituminous shingles) contractors who have little or no experience in the field.

It is best to complete the complete cutout before proceeding with the installation to remove moisture and replace the rotten substrate.


The picture above shows the most common signs that you will notice as your roof starts to age. These include:

- thinning and blistering
- cracking
- compression or stretching
- flaking
- traces of cuts
- accumulation of grease and dirt that can no longer be removed


Considered to be the most durable. Thanks to the welded seams, it remains flexible throughout its life and can also resist thermal movement.

PVC roofing can last over 30 years. Manufacturers offer a 25 year warranty for commercial installations and some offer a lifetime warranty for residential installations (IB, Flex, Fibertite). Here is a good article on the real characteristics of PVC roofs: http://www.coolflatroof.com/flat-roof.php

EPDM only lasts about 10-15 years. While manufacturers offer up to 40 year warranties for commercial roofing (not residential), it is important to know that these warranties do not cover crumbling joints or bodies of water, both of which are major causes of rubber membrane failure.

The durability of TPO roofing varies greatly due to membrane composition problems. They currently range from 7 to 20 years. The manufacturer's warranty is up to 20 years for commercial TPO installations and does not cover residential ones.

Please be aware that the warranties offered for different types of single layer membranes vary greatly depending on thickness, size, installation method and environmental conditions. Therefore, you should carefully read and compare the warranties for the various materials you are considering.

Resin and gravel as well as modified bituminous roofs will last about 10-20 years, but they are very expensive to remove at the end of their life. How long they last depends a lot on the installer, because today there are very few roofers who really know how to work with this material. If you have one of these roofs and it needs a refurbishment, it is best to go to a professional who has experience with it - someone who makes single membranes will not do a very good job.


We will take a closer look at the most common problems affecting the durability of a flat roof.

Leaks / Moisture

The biggest problem with most flat roofs is seams and glimpses, because this is where leaks occur.

PVC and TPO are the only two membranes that have welded seams that will never come apart and therefore do not allow moisture to pass through.

Tar and gravel, modified bitumen and rolled asphalt provide extremely poor protection against leaks and water ingress.


EPDM usually breaks down on roof penetration, flashing and seams, allowing moisture to penetrate

One of the biggest problems with sprayed roofs is that the insulation can be eaten by birds, which also leads to leaks.

Puncture resistance

Prefabricated roofs are typically 0.5 + inches thick and are made of hard materials so they are very difficult to puncture.

Single ply and foam roofs are usually easy to pierce by direct contact with sharp objects.

Some PVC materials come with fiberglass mesh making it very difficult to puncture.

Note that increasing the width of a single layer membrane does NOT increase its ability to protect against leakage, but it may extend its overall life and make it more puncture resistant.

The importance of isolation

If you plan to install a flat roof, it is very important to use high quality insulation with an appropriate R-value. Without it, you will be spending a lot of money on heating and cooling. You will also experience extreme temperature fluctuations in your home.

The best product is Polyiso rigid foam. It is also the most expensive $ 55 for 100 sq. Feet. for 1 inch of insulation, which has a value of 6 R. It is available in various thicknesses in 1 inch increments.

We recommend that you consult with your contractor to find out what type of insulation is best for your home and how much you need.

Pro Tip: It is not worth saving money on insulation. This will only lead to a shorter life of your roof, poor energy efficiency, and uncomfortable temperatures inside your home, and you will likely spend more money fixing insulation problems that could have been avoided in the first place.

Maintenance and repair

A typical flat roof repair costs at least $ 350 - $ 400 and includes finding sources of leaks and fixing seams or holes. However, depending on the severity of the damage and the type of material installed, flat roof repairs can cost up to $ 600-800 +.

PVC membranes are easy to maintain and repair, and their welds remain weldable for their entire service life, making any repairs, maintenance or modifications for a quick and easy installation of new equipment.

A typical repair for a heat-sealable membrane such as TPO or PVC is to weld a patch to the membrane over a hole that has been found to be the source of the leak, or to re-weld a void in the seam.

If no leaks occur, it is recommended that you continue to re-sew (apply 6 '' protective tape to all seams) the EPDM rubber every 7-10 years when the adhesive begins to naturally fail Repair is done with EPDM peel and peel + EPDM primer (recommended method) or using old black glue. Penetrations are repaired with uncured flash, which can be stretched to form angular surfaces.

Built-in roofs are very difficult and expensive to fix, or even to find the source of the leak.

You can fix the rubber roof yourself using this rubber roof repair kit.

EPDM Roof Repair Kit

Unique applications and benefits

A flat roof is the best material for very large buildings; installing a pitched roof on such a building is not recommended because it will be much more difficult and expensive. It will also require special engineering to accommodate the additional weight of the structure, as well as roof ventilation and air conditioning and drainage equipment.

One of the most unique features of flat roofs is that most of them can be used as a deck, green roof (roof garden), patio, or penthouse. Green building enthusiasts prefer these systems because they can be turned into a roof garden. An additional benefit of a roof garden is that it improves air quality and reduces the heat island effect in large urban areas.

If you plan on this type of application, it is best to use an 80 mil or more PVC or TPO membrane because the hot air welds ensure the roof does not leak under the soil and plants.

Another benefit is that flat roofing works best when large HVAC equipment needs to be installed. It can go directly on the roof instead of being installed on the ground.

Finally, these roofs are great for large scale solar photovoltaic installations, as they tend to be unshaded and are highly exposed to the sun during the day.

Energy efficiency

One of the biggest benefits of a flat roof home is that it can be very energy efficient. TPO and PVC roofs are considered highly reflective and up to 90% of the heat is returned to the atmosphere. This means that one of these membranes can help you save hundreds of dollars on your energy bills, both Energy Star Rated for their cool properties.

It is important to note that white roofs collect a lot of dirt and dust during their lifespan. Over time, this reduces their energy efficiency. However, they are still highly reflective. Good regular maintenance can help prolong the optimal energy efficiency of the white membrane.

Today, many darker colored membranes are also reflective and energy-saving. You should check the manufacturer's specifications for a specific product to see its performance ratings.

and EPDM provide the lowest energy efficiency. In fact, because they are so dark, they can heat up to 170 degrees in summer, causing your HVAC system to work over time and increase your energy costs.

Environmental impact

TPO and PVC are 100% recyclable. At the end of their service life, the old membranes are returned to production.

It is possible to install PVC on an old roof, which eliminates the pull-off, which saves you costs and saves landfill space.

On the other hand, EPDM, tar and gravel, modified bitumen are not environmentally friendly. All of them cannot be recycled because they are made from petroleum-based by-products. Therefore, they must be buried.


This roofing guide is provided by Leo B.

I have been working as a roofer for 15 years and specialize in metal roofs and flat roofs.

Have a roofing issue or problem? Ask me any roofing question!

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The cost of keramoplast

Keramoplast is produced in two versions: in the form of corrugated sheets and imitation of tiles. Determine how many full sheets are needed for the roof. To do this, divide the area of ​​the roof by the area of ​​the sheet. For a panel with a smooth surface, this will be 1.55 square meters. m, for rough - 1.2 sq. m. So you can get the approximate number of sheets. To make the calculation more accurate, we take into account the dimensions of the ridge and slopes. We divide the length of the ridge by the useful width of the panel, round the result up or down to 0.5. Received the number of rows. Then we divide the length of the slope by the useful length of the sheet. The result is also rounded. Received the number of panels in a row. Then we multiply the values ​​and multiply the result by two, in case it is supposed to cover a gable roof.

For canvases imitating tiles, a similar calculation algorithm is used. To roughly determine the number of sheets, you can divide the roof area by the useful area of ​​the panel, taking into account the overlap. For a material with a rough surface, this will be 0.31 sq. m, for smooth - 0.28 sq. m. For a more accurate calculation, we determine the number of rows by dividing the length of the ridge by the width of the plate, and the number of sheets in a row, dividing the length of the slope by the length of the canvas. We multiply the results obtained and double them if the roof is gable.

Do not forget that, in addition to keramoplast, for proper installation, you will also need wind bars and skates. Their number is calculated very simply. We divide the length of the roof ridge by the length of the part, taking into account the allowance. Round the result to the nearest integer. The calculation is carried out in the same way for the wind bar. The number of fasteners is determined based on the fact that at least 9 pieces plus a spare one are required per sheet. We multiply the number of sheets by 10, we get the number of fasteners. When buying, you need to take into account that there are 100 pieces in a package with caps, and self-tapping screws are packaged in a box of 240 parts.

Having accurately determined the amount of material required, you can calculate the cost of the finished roof. Prices for a keramoplast sheet start at 450 rubles, imitation of tiles will cost from 150 rubles. The cost of ridge parts starts from 340 rubles, wind slats - from 280 rubles. The price of packing protective caps is about 100 rubles.

Installation of Ondulin over an old roof made of metal, profiled sheet, slate or roofing material

Installing a new roof without removing the old one allows you to solve several problems at once:

  1. Reduces costs for dismantling the old roof and garbage disposal.
  2. Reduces timerequired to cover the roof.
  3. Allows do not fear the fact that rain will wet the insulation or interior decoration of the house, while the roof is open.
  4. The old roof is additionally leakage protection.

Before installation

Before installation, it is recommended to clean the roof from debris, evaluate and repair the supporting structure. If necessary, remove parts of the old roof if it interferes with installation.

If there is an old metal ridge, then it is necessary to remove it for better ventilation of the roof. For roofing material: old, rotten, broken, as well as slats located exactly on top of the rafters, must be removed before installation.

Required tools: hammer and wood saw, oiled to avoid getting stuck. You can use a circular or hand-held power saw.

Sheets should be mounted only at positive temperatures. With negative (up to -5 °) - with great care. Below is not possible. It is also not recommended to install the roof of ondulin at very high positive temperatures (from + 30 °).

Roof ventilation allows you to remove moisture from wooden structures and insulation, as well as reduce the temperature in the room under the roof.

It is recommended to use a ladder or construction bridges to move on the roof.

It is better to mark the roofing sheets with a colored pencil. You can use a piece of sheet, a batten, or a stretched rope to neatly mark the wavy surface.

It is not recommended to stretch or squeeze the sheet more than 1 cm.

Gazebos | Wooden and vinyl gazebos

You can imagine yourself relaxing in a new gazebo, away from the sun, from annoying mosquitoes and midges. The carriage shed comes in a wide range of styles, sizes and materials. Make your gazebo blend in with the forest with a southern yellow pine or pressure treated cedar gazebo. You really want to be able to relax and not worry about the content. Look for nothing but the vinyl-lined The Carriage Shed gazebos to brighten up any yard.

All of our gazebos are made by Amish from select # 1 material. You can also build a custom gazebo. Whether you need a special size, a unique paint color or other roofing material to suit your home, we can meet your every need. Contact us today about your dream gazebo and make it come true.

Watch the video: Skyline Metal Roofing Installation Video by ASC Building Products