Ondulin roofing: description and characteristics of the material, installation methods. How to properly cover the roof of a private house with ondulin with your own hands? How to cover a sloping roof with ondulin with your own hands

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Recently, ondulin has been losing popularity among developers; the first craze for the widely advertised roofing material has passed. Consumers were able to personal experience check the veracity of manufacturers' promises and draw your own independent, objective conclusions.

In order to attract buyers, ondulin was called Euroslate in advertising brochures; our compatriots trust foreign standards, and quite rightly so. But they did not know that ondulin in Europe was never used as a roof covering for residential buildings; only the cheapest and temporary structures were covered with this material: sheds, storage areas, etc. And then only in cases where it was not planned to use it for a long time With such structures, they stood for a maximum of 5–8 years, and then were demolished.

In our country, inexperienced developers covered houses designed for many decades of use with ondulin. Ondulin loses its original properties after a maximum of ten years, then it needs to be dismantled. This is time-consuming and expensive; it is much more profitable to immediately cover the roof with reliable, high-quality and durable materials.

The base of ondulin is made from waste paper production or waste paper, then the sheets are impregnated with waterproof bitumen materials and paints, and the flat sheets are given a profile.

It is the physical properties of the base that have a decisive influence on the technical parameters.

An undeniable advantage is the low price. But the roof is not an architectural element of the house on which it is advisable to save. For its construction it is necessary to use the highest quality and durable materials.

Ondulin is one of the most budget-friendly roofing coatings

Prices for various types of ondulin

How to distinguish original ondulin from a fake

The original material does not have high quality indicators, fake roofing coverings are much worse, it is not worth buying and installing them even on temporary structures.

Real branded ondulin has several signs that you should pay attention to before purchasing:

reverse side with corrugated black mesh, all veins are clearly visible;
there are only ten waves on the sheet, the edges for the joints are somewhat thinner to reduce differences on the roof;
the front surface is slightly rough, indicating a cellulose base;
last wave with manufacturer's marking, date of manufacture, plant code.

Accessories are marked - ondulin

Upon first request, sellers must provide quality certificates. If there are excuses that all the documents for the goods are in the central office, they are trying to sell you a hundred percent fake, do not buy anything from unscrupulous sellers. Today, purchasing ondulin is not a problem; all construction supply stores are stocked with this product.

In practice, there are no two completely identical buildings; each has its own differences, which requires a slight correction of the generally accepted ondulin installation technology. But experienced roofers have developed several universal tips that need to be followed despite the peculiarities of buildings.

Preparation for work

There is no need to rush, you need to carefully prepare before starting work. Calculate and buy a certain amount of materials. In this case, there is no need to make a large supply; ondulin has a minimal amount of waste. Along with the sheets, you need to purchase additional materials for ridges, windshield and cornice boards.

Additional elements: ridge strip, valley, wind strip, nails

Additional elements for ventilation and connections

One of the most popular methods of arranging roofing in private housing construction is laying sheets of roofing ondulin. Considering the specifics of this modern French roofing material, its installation technology has a certain number of features, taking into account which allows us to obtain a high-quality and durable roof.

Installation options and methods

In today's market building materials Roofing is one of the most advanced roofing systems that are widely used throughout the world. Today there are several options and methods for installing this inexpensive but high-quality roofing material.

On the old roof

A significant advantage of ondulin is that there is no need to dismantle the old roof covering. It is enough to simply install a layer of insulation on which the roofing sheets are laid in accordance with the same technology as during the installation of a new roof covering.

Stages of installation on an old roof:

pulling the rope along the lower segment of the bars and aligning the remaining vertical bars along it, installed at a distance of every fifth wave of the wave roofing material or every 60 centimeters;

fastening the vapor barrier across the slopes using mounting brackets in increments of 15 centimeters, followed by gluing the joints with mounting tape;

installation of a horizontal bar flush with the ends of the vertical sheathing and fastening at the points of intersection with vertical bars with 70 mm self-tapping screws;

place the layering of two sheets of old covering with a cut at the level of the horizontal sheathing;

laying thermal insulation and breathable membrane;

laying ondulin from a section of the roof opposite the prevailing wind.

On roofing felt

It is permissible to install onduline sheets onto the surface of old roofing material, but all gaps in the old coating should be eliminated. For high-quality installation, you should install a new counter-lattice along the length of the rafters and sheathing across the rafter system. Such work will allow condensation or moisture to not stagnate on the roofing felt. A beam with a cross section of 5x5 centimeters is used.

The counter-lattice is placed at intervals of the rafters, and the sheathing is installed at intervals of 60 centimeters. Further, all work on laying ondulin sheets is carried out according to the attached instructions.

New roof

When creating a new roof from sheet ondulin, you should pre-lay high-quality sheathing at intervals according to the angle of inclination of the slopes. After completing the sheathing, you should carefully mark the sheets of ondulin. To cut marked roofing material, a hacksaw is most often used, which is pre-treated with oil for high-quality sliding.

During installation, the following basic requirements must be observed:

the starting row of sheets should be secured on the side away from the blowing wind;
the next row of sheets is attached from half of the previous one;
The sheets should be secured along each wave.

DIY installation rules and technology

For continuous sheathing, used with a slight slope, moisture-resistant sheet lumber or thin tongue-and-groove boards are used. The maximum gap between such materials should not exceed five centimeters.

For slopes with average slopes, thinned sheathing with a distance between elements of 45 centimeters is required.

For a roof with a significant slope, it is necessary to install a thinned type of sheathing in increments of 60 centimeters.

Scheme and instructions for installing ondulin on the roof

For correct execution of installation work, it is applied by the ondulin manufacturer to each manufactured product. The main stages of self-installation of a roof made of sheet ondulin are as follows:

To facilitate installation work, ondulin starting sheets should be attached to the opposite leeward edge of the roof. The second row begins with half a sheet of the first row, which forms three sheets at the corner joint;

fasteners are driven in along each wave on the end segment and overlap of the sheet, as well as on two sides of the side overlap. Attaching to the intermediate sheathing bars is done through a wave. Twenty roofing nails are used per sheet;

installation of the ridge elements begins from the opposite leeward side of the roof edge using an overlap of 12.5 centimeters. The place of fastening of the ridge elements is the wave of the roofing sheet joining the ridge and additional sheathing bars;

it is necessary to install valleys and gable elements, as well as correctly design the side roof joints at the junction with vertical surfaces using a covering apron;

installation of a ventilation system involves the use of a roof fan, a ventilation pipe and a special comb;

in order to provide access to the roof surface and organize lighting in the attic space, it is necessary to install a roof window, which is attached to each wave of the sheet at the junction. The top sheet is used to overlap the base of the roof window;

To perform high-quality waterproofing of joints between roofing surfaces and vertical surfaces, it is recommended to use Onduflesh insulating tape.

For more information about DIY installation, watch the video.

Cost of roofing work

Despite the fact that roofing made from sheet ondulin is easy to install yourself, many homeowners prefer to use the services of professional craftsmen who not only quickly and efficiently carry out this type of roofing work, but also provide a guarantee for all work performed.

The average price of roofing work “TURNKEY” without taking into account the cost of ondulin depends on the volume and type of work performed:

without dismantling the old roof, including cleaning the roof, installing counter battens and step lathing, as well as laying roofing ondulin, ridge, wind and cornice strips and chimney - 400 rubles per square meter;

instead of an old roof with strengthening and repair of the rafter system, including dismantling the roofing carpet of the old covering, strengthening and repairing the rafter system, installation of ondulin with waterproofing, as well as all accessories - 800 rubles per square meter;

a complete roofing pie with mauelrat, including insulation, wind insulation, waterproofing, vapor barrier and internal lining with the installation of ondulin - 1200 per square meter.

Let's sum it up

basic rule self-installation ondulina - performing all work in strict accordance with the attached instructions;

you cannot skimp on the quality of lumber for sheathing, and all lumber used in the roofing system must be treated with special antiseptic compounds;

The type and pitch of the sheathing should be strictly observed depending on the slope of the roof slopes.

Onduline is one of the most popular roofing coatings. Demand is determined by its strength, aesthetic appearance and durability. If you want to improve your own home, we will tell you how to cover a roof with ondulin with your own hands as efficiently and quickly as possible.

What is the material

Initially, before proceeding with installation, you need to study the properties of the material. Ondulin is similar to slate, however, it has a flexible base. This roof consists of the following layers:

main board - cellulose-fibre board;
mineral additives and filler, which are responsible for strength;
bitumen resin, which guarantees resistance to moisture;
pigment is responsible for the aesthetics of slate.

The price of 1 m 2 of ondulin starts from 200 rubles, so the cost of a sheet with a width of 0.95 m, a length of 2 m, a thickness of 3 mm, a wave width of 9.5 m and a weight of 6.3 kg is 395 rubles. You can buy the material at any hardware store; many also provide home delivery.

Advantages of ondulin

Modern onduline material is produced on the basis of bitumen. The advantages include the following:

lightness - because of this, there is no need to construct a reinforced rafter system before laying the roof;
budget cost is ensured due to the manufacturing method and available component materials;
Elementary care - just spray it with a hose or wait for the rain;
the material is resistant to acidic and alkaline irritants;
there is no risk of mold on the surface and inside the layers;
roofing made of ondulin is environmentally friendly due to the characteristics of the components;
resistant to precipitation in the form of snow and rain;
the manufacturer determines the service life of 15-20 years;
installation of ondulin is possible on top of the old roof, which will save on dismantling.

Disadvantages of operation

It is necessary to note the disadvantages of the material in order to ensure the possibility of an objective choice of roofing:

sun and rain can cause the roof to burn out, which will negatively affect the appearance of the coating;
resistance to water is ensured only for the service life specified by the manufacturer;
if you intend to purchase a large volume of slate, then it may turn out that some sheets differ in shade;
fragility - the surface should not be walked on, as most likely dents or other damage will remain on it; the same criterion should be taken into account during transportation;
As you can see in the photo, the limited color range currently includes only 4 colors: brown, green, red and black.

The technology for laying ondulin is similar to fastening slate, but before starting work you should do a little preparation.

Features of working with ondulin

To correctly attach ondulin to the roof, you should learn some of the intricacies of working with this fashionable material. After studying them, you will be able to lay sheets on the roof of any structure yourself.

If you still need to go through the required material, then it is better to step on the crest of the wave.
To renew your roof for a long time, everything is better installation work carry out at temperature environment in the range from -5C to +30C. If the temperature is above normal or, conversely, below -5C, reschedule the work to another time.
Approximately 20 nails are used to fasten one sheet. This is exactly how many nails the sheet can hold in case of gusts of wind.

Due to the nature of the composition, the coating may stretch. This leads to the appearance of waves over the entire roof area, which will only have to be removed by dismantling. To prevent stretching, the ondulin fastening scheme involves the use of sheets that are perfectly even in shape.
Check that the overhang is long enough. Too long will look unsightly, and too short will lead to the collection of debris and dust under the roof. The most dangerous thing is that precipitation will constantly fall under the short overhang.

What you need to prepare initially

Note that the competent selection of the necessary tools and materials is much more important than the installation itself.

Make an accurate calculation of the required amount of coverage. The dimensions of a standard onduline sheet are 200 x 95 cm. Be sure to take into account overlap allowances in your calculations. For overlap you will need to leave 9.5 cm in width and 10-15 cm in length. It turns out that the useful area from one sheet will be 1.6 m2. If you know the total roof area, you can simply divide it by 1.6. So you can do it practically exact number necessary sheets. Please be aware that results may vary depending on the roof angle and roof shape.

Preparation requires the availability of the following tools:

hand saw for wood;
hammer;
nail puller;
ladder;
roof ladder.

In addition, you should purchase auxiliary parts, without which the work will not be of high quality:

tong elements (protective shields) for the edge;
cornice filler (foamed polyethylene, which prevents debris from getting between the sheets and the sheathing);
skate (flexible);
rubber drip aprons;
specialist. nail fasteners with a rubber cap.

Making lathing and its features

Laying ondulin on the roof involves arranging a continuous sheathing. It is extremely necessary so that the material does not sag later. For installation, waterproof plywood or OSB boards are used, and the pitch should be 40-45 cm.
If the roof slope is more than 15 percent, then the sheathing pitch can be increased to 60 cm. And for areas with a lot of snow in winter, the sheathing pitch should be minimal. To build the frame, bars with dimensions of 4 x 5 cm, 5 x 6 cm or 5 x 5 cm are used.
Install additional sheathing under the gable and ridge. The sheathing under the ridge is installed at a distance of 5-10 cm from its axis. This distance varies depending on the degree of slope of the roof slopes.
The cornice is formed using a rubber apron, which can bend, enveloping the sheathing of the cornice at any angle. The apron is attached to the sheathing with ordinary self-tapping screws, and the overlap between the elements is 5 cm.

Important! Immediately before the construction of the sheathing, it is necessary to carry out waterproofing work.

The last thing to install is the wind board, which should protrude 3 cm from the sheathing frame.
After the frame is erected, be sure to check the entire structure for compliance with the geometry. To do this, measure the diagonal of each roof slope. If the values differ, all errors should be eliminated.

Ondulin installation instructions

To properly cover a roof with ondulin, you must adhere to a certain algorithm.

Important! Initially, you should take care of your own safety.

Here are the instructions for laying ondulin with your own hands:

Attaching the first sheet should begin on the side farthest from the wind, and always from the bottom of the slope. To align the sheets, pull the cord along the bottom edge, taking into account that the sheet overhang should end at a distance of about 5 cm from the drip apron. The extreme wave of the sheet should touch the wind board. Place the filler in the space of the waves between the sheet and the sheathing, using a screwdriver to free the ventilation holes in it. If this is not done, birds may fly into the holes under the waves, and even hornets may take up residence.

Special nails are equipped with special heads, so fastening is carried out as follows: with a hammer you punch a nail with an open head at an angle of 90 degrees, and after driving it in, put on a decorative cap.
Remember that you will have three lines of fasteners on each sheet. To get a nail into the sheathing, either mark the sheet or stretch a rope along the sheathing line. It is important to remember that the indentation of the lines along which the nails are driven in will depend on the pitch of your sheathing, however, there cannot be less than 3 lines of nails on the sheet. Next, carry out the fastening according to the diagram below.

Lay the second sheet overlapping 1 wave, and you will nail its first wave together with the overlap, that is, immediately into the sheathing through two sheets. During the process, make sure that the second sheet does not protrude beyond the boundaries of the lace that regulates the horizontalness of the bottom of the roof. In any other situation, the sheets will lie askew. If you need to cut off the tip of the sheet, you can use a hacksaw.

Second - the next row relative to the first lies in order chessboard. To do this, take and cut the sheet lengthwise in the middle. Install an overlap between the rows of 10-15 cm. If the roof slope allows, then the overlap can be reduced, thereby achieving savings in material consumption.

After completing the installation of the last segment, you can proceed to attaching roofing accessories that perform the functions of protection and decoration.
The gable elements are installed on the wind board, which is pressed closely to the ondulin. The overlap of the pliers is about 15 cm. It is nailed to the end with the same nails.
The ridge for ondulin is attached to the edge of the roof opposite the predominant wind direction, just like the sheets. The ridge is nailed into each underlying wave, on both sides alternately. The overlap of the ridge elements is also 15 cm.

Important! Pay extreme attention to the quality of nail fastening. Their caps will be very visible on the surface, so initially take care of their correct geometry.

Now that you know the step-by-step instructions for installing ondulin, here is a video instruction for a more detailed introduction to the installation process.

Now you can easily cover your roof using ondulin. Perhaps you already have experience working with this material? Share your impressions with the readers below.

The completion of the main construction work can be called the installation of the roof. This last stage, after which the interior is finished and communications are connected. Speed up roofing work You can coat it with ondulin yourself.

This modern roofing material is made on a bitumen base; it can be installed on a newly erected structure and on an old roof without prior dismantling. Ondulin is considered universal material, since they cover roofs of any shape, area and angle of inclination. If the installation rules are followed, the coating is sealed and durable, able to withstand any natural phenomena.

Characteristics of the material

Ondulin is considered an inexpensive but high-tech material. It was invented by the French after the war in order to quickly restore old, dilapidated houses covered with slate, tiles or metal after bombing.

The technological process of covering a roof with ondulin implies the following: products with a wavy surface were molded from purified cellulose fibers, painted and impregnated with bitumen. The result is a material with good water-repellent properties, resistant to sudden changes in temperature, lightweight, but able to withstand mechanical stress. Its low weight allows the material to be used for roof repairs without dismantling the old covering.

Before laying ondulin on the roof, you should familiarize yourself with its advantages:

Easy installation. Laying roofing material can be completed in 1-2 days, without involving auxiliary workers, without experience or a special set of tools.
Light weight. The weight of one standard sheet does not exceed 6 kg, therefore, there is no need to make a massive base or complex foundation for ondulin.
Flexibility. Bitumen-based materials can be bent, which makes it easier to install roofs on complex structures.
Acceptable cost. Specifications allow you to lay the material on any frame, both old and new, doing all the work yourself. This allows the homeowner to save on roofing costs.

Among the disadvantages of ondulin are the following:

service life does not exceed 20 years.
The color scheme consists of 4 main types: black, brown, red and green.
When exposed to sunlight, the pigment is destroyed and the material fades.

How to cover a roof with ondulin correctly - features of the roof

A roof covered with ondulin is a roofing cake with the following composition:

Rafter system. Natural wood is used to make the frame. The rafter legs have a size of 5*15 cm and are located at a distance of 0.5-0.8 m from each other. The roofing material is lightweight, so the frame does not require additional reinforcement.
Thermal insulation material . Covering the roof with ondulin yourself involves thermal insulation of the rafter system. To do this, the space between the rafters is filled with glass wool, slag wool or basalt wool.
Vapor barrier layer. To protect the insulation from vapors emanating from below and subsequent wetting, it is necessary to use a vapor barrier membrane. This material covers the thermal insulation from below.
Waterproofing works. Before laying ondulin, it is necessary to waterproof the roof. Waterproofing material protects the wooden frame and thermal insulation on top from condensation or accidental leaks. The waterproofing is fixed to the rafter legs using a construction stapler.
Counter-lattice. To ensure ventilation inside the structure, slats are placed on the rafters over the waterproofing material. These actions are performed before the actual installation of ondulin.
Lathing. To install an ondulin roof, a continuous sheathing using moisture-resistant plywood or made from boards with unedged edges is required. In the case of boards, the sheathing pitch for ondulin is 10-15 cm. This design will prevent deformation of the roofing material during operation.
Ondulin. The last thing you need to do is cover the roof with ondulin. The sheets are attached to the sheathing using special nails, stacked on top of each other up to 15 cm. Immediately before laying, the wooden frame and other elements are protected from fire and rotting using antiseptic solutions and fire retardants.

Necessary materials and tool kit

No special tools are used to install ondulin, which allows you to do almost all the work yourself.

To solve the question of how to properly cover a roof with ondulin, you will need the following:

Roofing material, in particular ondulin sheets, in the required quantity, taking into account the reserve for trimming and overlaps.
Ridge profile covering the entire length of the roof. When determining the length of the product, one should not forget that at the junction the parts are laid with an overlap of 10 to 25 cm.
Special fasteners. The most commonly used nails are carbon steel, painted the same color as the material and having a rubber head.
Materials for the manufacture of lathing, pre-treated with an antiseptic solution. This can be a board or bars with a cross section of 4*4 cm.
Waterproofing material, which can be a film or membrane.
Hacksaw and hammer.
Pencil and measuring tools.

Coating the roof with ondulin - step-by-step instructions

Despite the easy processing of the material and simple installation technology, which even an inexperienced craftsman can handle, the work must be performed at a high quality level, since the service life and reliability of the structure depend on this.

When installing ondulin, you should adhere to step by step instructions how to cover a roof with ondulin:

Installed rafter system covered with waterproofing material. To do this, you need to cut strips along the length of the slope and lay them perpendicular to the rafters, overlapping up to 15 cm. The material can be secured using a construction stapler, and the joints must be taped.
A counter-lattice is placed on top of the waterproofing along the rafter legs. The slats can be secured with nails or self-tapping screws.
Next, install the sheathing using moisture-resistant plywood for a solid version or bars located at a distance of 10 cm from each other. Before laying ondulin, the wooden frame is treated with an antiseptic and fire retardant.
Ondulin is placed on the sheathing. Work begins at the bottom of the slope, laying the sheets overlapping up to 15 cm. Installation of each next row is carried out with an offset of half a sheet and a vertical overlap of up to 20 cm.
Ondulin is attached to the sheathing using special nails with a rubber head at a rate of up to 20 pieces per sheet.

How to lay - rules

To prevent common mistakes during the installation process, we cover the roof with ondulin in compliance with the following rules:

Laying the material should be carried out in dry weather at low air temperatures, since deformation of the sheets may occur in the heat.
When installing ondulin, you must not expose it to strong mechanical stress, as this may cause deformation or damage to the material.

Ondulin is one of the most commonly used roofing coatings. In its production, the technology of saturating organic fibers with bitumen under conditions of high pressure and high temperature is used. The material is distinguished by its strength and durability, and thanks to the dyeing performed before the process of processing and impregnation of the fibers, it is completely not susceptible to the destructive effects of negative external factors.

Subject to the right technology Made from ondulin, it can withstand both severe frosts and hot tropical sun. You can even install ondulin sheets yourself.

Characteristics, pros and cons of the material

Ondulin is a material of organic origin, made from cardboard, coated on both sides with bitumen, with various additives. This is a slightly rough, very light corrugated roof covering. After installation, it is painted in the required color.

Ondulin has a number of advantages, the main ones being:

strength;
ease;
plastic;
length of service life (50 years or more);
resistance to chemical compounds;
non-susceptibility to the development of microorganisms, fungus, mold;
ease of cutting and installation;
wide choice of colors (red, green, brown, black);
ease of storage and transportation;
noiselessness;
long-term color retention even when exposed to strong ultraviolet irradiation.

The main disadvantages of the material are:

the need to create lathing to prevent sheet deformation;
flammability;
The fragility and plasticity of bitumen significantly complicates repair work and roof maintenance.

Preparatory work

When installing ondulin sheets important point is the correct implementation preparatory work in compliance with basic recommendations.

When carrying out any construction work, the first stage is the selection of basic, consumable and auxiliary materials and their preparation. You also need to stock up necessary tools. High-quality installation of roofing is largely determined by the thorough implementation of the preparatory stage.

Calculation of materials and selection of tools

It will not be an exaggeration to say that the selection and calculation of materials, the choice of tools in this case is more difficult than the work itself. But it is careful calculation and selection of material that makes it easy to carry out subsequent installation of the coating.

First of all, you need to buy the required amount of ondulin. To do this, you need to know the total roof area. Standard size sheet is 2000 x 950 mm. It is also necessary to take into account the overlap that will need to be made when laying the sheets. The overlap in width will be 9.6 cm, in length - from 10 to 15 cm. As a result, the useful area of one ondulin sheet will be approximately 1.6 square meters. m. By dividing the total roof area by this value, you can get the approximate number of sheets needed to create a roofing covering. The calculation rules change to a certain extent as the roof slope angle decreases until the parameters of a flat roof are achieved.

In addition to ondulin sheets, you also need to purchase a set of design components. It includes:

skate;
edge forceps;
valleys;
special steel nails with propylene heads of various shapes and colors: the choice depends on the original color of the material. The base of these fasteners resembles screws, thanks to which they are firmly attached to the wood. A rubber gasket is attached to the top, providing additional waterproofing at the attachment points.

At the junction of ondulin sheets with a wall (any other vertical plane), it is necessary to use valleys specially designed for this purpose. In these parts, waterproofing must be carried out with special care.

If the house has a chimney, special rubber aprons are used when covering it with roofing material. This is done to create the correct joint.

To obtain a reliable roofing covering, the joints should be thoroughly treated to ensure effective waterproofing and prevent negative impact moisture on the roof frame and its rotting.

To cut, then nail the sheets, and lay the material, you will need the following tools:

circular saw or hand file;
hammer;
nail puller;
stepladders;
stairs;
special ladders for fastening to the roof ridge.

The process of creating an ondulin coating

In the case when the roof is already covered with roofing material (flat slate, metal, roofing felt), it does not need to be removed: you just need to slightly deform the ondulin sheets.

If the sheets are larger than the required size, they can be cut using a jigsaw or hacksaw.

Ondulin is the final coating, which should protect against moisture penetration. The function of thermal insulation must be performed by another material.

Waterproofing and vapor barrier

1. When creating an ondulin coating, the first thing you need to do is take care of the waterproofing, which is installed under the finishing coating. For this, you can use any vapor-permeable waterproofing membrane, but the optimal choice would be the ODUNTIS branded membrane.

The material is laid on top of the rafters with a 2-centimeter sag. The rolls are rolled out in a direction transverse to the roof slopes. In this case, the top sheet should overlap the bottom sheet. Determining the amount of overlap is not difficult: for this purpose, factory markings are applied to the membrane. The joint areas must be glued using double-sided fabric tape.

The original ODUNTIS membrane can be laid directly onto the insulation. The material has the ability to transmit water vapor, but, on the contrary, retains water.

2. The next step is to lay the counter-lattice. This point is very important, since the counter-lattice performs important function: provides the creation of ventilation ducts through which air masses circulate along the insulating membrane. As a result, moisture is removed from the roof. Thanks to the presence of ventilation, as well as the use of antiseptic impregnations, the wood will last much longer.

When using other waterproofing materials in the case of creating a warm roof, it is necessary to perform an ondulin vapor barrier. Laying of vapor barrier layers is carried out during the installation of covering sheets. If you plan to create a cold roof, you can skip this part of the work.

Lathing

The manufacturers of ondulin themselves recommend using a continuous type of sheathing underneath it, since the material does not provide a sufficient level of rigidity and can sag, sag when heated in the hot season, or break under the pressure of the snow mass in winter.

But in principle, the choice of type of sheathing depends on the roof slope angle. Three lathing options are available for ondulin:

With a flat roof (with a slope angle of 5-10 degrees), continuous sheathing is required. It can be made from shalevka boards or chipboard sheets.
If the angle is 10-15 degrees, the lathed boards or bars should be placed at a distance of 45 cm from one another.
If the angle of inclination is steeper than 15 degrees, the bars are laid at a distance of 60 cm from each other.

The sheathing bars are fixed to the counter-lattice elements using self-tapping screws (nails) while maintaining an equal interval between them.

Preparation of sheets

The first step is to make markings on the ondulin sheets, which is quite problematic due to their wavy shape. For this purpose, ordinary pencils are used. A straight line can be drawn using another sheet.

To cut the sheet along the line, you can use a grinder or a wood saw. To avoid jamming, the tool is periodically lubricated with oil.

Installation stages

If the sheets weigh no more than 6 kg, they can be easily lifted onto the roof. The use of such material will ensure the creation of a fairly light roof.

The installation process itself is carried out in the following order:

Fastening the sheets should begin from the windless side. Sheets begin to be mounted from the bottom. To do this, you need to pull the cord, nailing it to the nails so that the lower edge of the roof protrudes 6-8 cm from the wall - subsequently, drains for sedimentary moisture will be installed at this distance.
When installing the first sheet, you need to drive in nails, starting from the second wave from the end edge of the roof, and then continue driving nails through the wave, observing a checkerboard pattern. This order is very important for creating a presentable appearance of the roof, since the nails will stand out on the roofing surface due to their large curly heads.
The second sheet is laid overlapping (in one wave). During installation, it is necessary to strictly ensure that the sheet does not deviate from the tensioned cord, through which the horizontal arrangement of the elements is adjusted.
After laying the first bottom row to the opposite edge of the roof, it may be necessary to saw off part of the last sheet. For this you can use circular saw or a hacksaw for wood. Sawing ondulin is very easy. Sawing off the final row must be done from the inside of the roof (where the last row overlaps).
The second row is located in relation to the first in a checkerboard pattern. For this purpose, the first sheet (of the second row) is sawn longitudinally into two parts. The second row is laid with an overlap of 10-15 cm on the first. The value may be greater in the case where the size of the roof allows for a greater overlap of one sheet onto another without loss in the amount of material.
After completing the installation of sheets over the entire surface of the roof, you can proceed to attaching the design parts that perform protective and decorative functions. Also sold with ondulin sheets is a semicircular ridge, very convenient for fastening, equipped with flat protrusions on the sides. Its flexibility makes it possible to adapt to any angle formed by intersecting roof planes. A wind board is nailed to the end sides of the roof, to which the ondulin sheets are attached using a standard edge forceps.

Basic rules for laying ondulin

To perform quality work and ensure long term operation of the roof, you need to know some of the nuances of installing this material:

The most favorable temperature conditions for work are temperatures in the range from minus 5 to plus 30 degrees. If the temperature is higher or lower, it is better to postpone the work until another day.
When attaching one sheet, use at least 20 nails included with the sheets. This measure is necessary to create a sufficiently durable coating that can withstand strong gusts of wind. When installing by hired workers, it is necessary to strictly control the correctness of the fastening.
To create the sheathing, beams with a cross section of 60 x 40 mm are used. The sheathing pitch has a direct impact on the service life of the roof without the need for repair work and is determined depending on the slope of the roof.
Ondulin stretches well. This property can be used by unscrupulous workers: to reduce work time, they can nail sheets stretched to the limit to the sheathing bars, which after a certain time leads to the appearance of waves on the roof surface. Such waves can only be eliminated by completely covering the roof. To prevent this phenomenon, before installation, you need to make sure that the ondulin is in normal condition.
During the installation of sheets, it is necessary to take measurements with particular care, in particular, pay attention to the overhangs: with their considerable length, the ondulin can bend, which will ruin appearance roofs. And when creating overhangs that are not long enough, precipitation and various debris can get under them.
Strict adherence to the linearity of joints in both horizontal and vertical directions is necessary. Before fastening, you must once again make sure that the sheets are laid evenly, and then make the final fastening.
Overlapping of four sheets in one corner is unacceptable. For this reason, the second tier must begin with half a sheet. The approximate overlap between tiers should be 15 cm.
And, of course, you should remember about safety measures. If, while performing work, it becomes necessary to walk on the mounted ondulin, you should only step on the crest of the wave: the part between the crests cannot support the weight of a person. Considering the characteristics and properties of the material, you can only walk on it in soft shoes.

CONCLUSIONS:

Ondulin is one of the most commonly used roofing coatings.
Ondulin is a material of organic origin, made from cardboard coated on both sides with bitumen.
The main advantages of ondulin: strength, lightness, durability.
When installing ondulin sheets, an important point is precise execution preparatory work.
First of all, you need to calculate the required amount of ondulin. To do this, you can use a ready-made formula.
When creating an ondulin coating, the first thing you need to take care of is waterproofing. To do this, you can use any vapor-permeable waterproofing membrane or the original ODUNTIS membrane.
The next step is to install the counter-lattice required to create the ventilation products.
Manufacturers of ondulin recommend using continuous sheathing.
The choice of type of sheathing depends on the roof slope angle.
When installing sheets, you must follow the prescribed procedure.
To create a durable coating, at least 20 nails should be used when attaching one sheet.
If during work it becomes necessary to walk on the onduline, you can only step on the crest of the wave.

Find out how to properly connect the ondulin roof to the wall of the building so that the roof does not leak from the video.