Roof of ondulin: installation features

The roof of ondulin is becoming more popular with private masters and professional builders lately. This is due to many factors, among them one should especially highlight the acceptable cost and ease of laying. Installation work will be able to even a novice master who does not have enough experience in roofing. But first, of course, it is important to get acquainted with the features of the installation. Otherwise, the roof will not last long, and the forces, time and money will be wasted.

Ondulin is available for sale in the form of tiles or slate sheets. As a basis, a cellulose fiber impregnated during the manufacture of special resins or bitumen. Processing is carried out at high pressure, while the material is heated to a temperature of 130 degrees. As a result, it is possible to obtain sheets that are waterproof, long-lasting and can be stacked at any angle of inclination of the rays.

Ondulin is biologically inert, its surface does not form mold and fungus. This coating is resistant to ultraviolet light, does not burn out during operation. The roof of ondulin is also popular for the reason that it has a negligible weight, so it can be used with lightweight structures. You can lay the material on the old roofing covering, setting up a system for the dredging.

Preparatory work

Installation of the roof can be started only after you can determine the type and amount of material for overlapping. You can perform the calculation yourself. Depending on the angle of inclination of the ramp, the coating technology will change, in particular the design of the sheath. This is determined by the snow load, which increases in the case of flat roofs.

If the angle of the ramp is not more than 10 degrees, then the material is laid on a continuous crate. In this case, the transverse overlap of the sheets should be equal to 30 centimeters. In the role of the material for the substrate, you can use an edging board or plywood.

Crawl the roof of the ondulum only after the carcass system has been equipped. It can be sparse and used when the angle is 10 to 15 degrees. The distance between the slats can be about 45 centimeters. The length of the joint should be equal to 20 centimeters. With a steeper slope, you can equip the crate, the distance between the elements of which is 60 centimeters. In this case, the joint should be equal to 17 centimeters.

For reference

Despite the fact that the manufacturer advises to install ondulin without waterproofing at a significant angle of inclination of the ramp, experts recommend not to abandon this layer. It will be necessary to create an air gap. This will ensure the durability of the structure.

Features of mounting the frame system

With a small slope that is 5-10 degrees, a continuous crate is arranged, between the components of which it is necessary to leave a gap within 3-5 millimeters. For the skate and valley are laid boards, which are laid on the rafters. On each side the distance should be equal to 25 centimeters. Even with a slight slope on the overhang of the roof it is necessary to fix an additional bar, sometimes it becomes solid by 0.5 millimeters. However, these recommendations can not be found in the instructions. From the edge of the roof in the spring will accumulate ice and snow. It is this factor that determines the requirements listed above.

Before you cover the roof with an on-line with your own hands, you need to determine the slope of the roof, which should not be less than 1/11. Such a system should be covered with surfaced roll waterproofing. If the components of the carcass have the same thickness, then speed up the work of two wooden bar, the length of which will be equivalent to the internal distance between the components of the billet.

The quality of the frame is not so important, since ondulin perfectly lays on the roofs with an uneven surface. Under such conditions, asbestos slate would be covered with cracks. Bitumen-cellulose webs will lie on the shape of the structure, fulfilling its function. But do not expect that visually the roof will look as attractive as possible.

Preparation of tools

Before you cover the roof with an onduline, you need to prepare a certain set of tools, among them the following: a wood hanger, a marker, a hammer, a safety belt and devices for lifting the sheets. The hacksaw should have small teeth, which will perfectly cope with the opening of the ondulin. If the oil is lubricated, the hacksaw will cut the material faster. You can also use a circular circular saw for cutting. The marker can be replaced with a soft pencil, it is best to take one that has a light tint. It will be used for marking sheets. Some specialists use wax crayons for this. To mark the cornice, you will need a cord.

Nails should be hammered by a conventional hammer, but the sheets can be lifted upward using a special device. Ondulin is a light material, so it will be easy to give it by hand. But if the roof is quite high or there are other reasons that exclude material lifting by hand, a convenient device should be built. The most simple will be a strong rope, on the edges of which there are hooks. They should be hooked on the extreme waves of a sheet and on the central part of a rope to lift on a roof.

Roof roof with undelin must be carried out in the presence of personal protective equipment, which will use the master. This includes a safety belt, strong boots, a construction helmet, as well as a belt with pockets and overalls.

Necessity of using lining materials

If you decide to start laying ondulin, then you probably will have a question about whether there is a need to use steam and waterproofing. The manufacturer claims that the properties of the material described make it possible to do without additional barriers, since the material copes with these functions. But if you want to perform the insulation of the attic or the attic, then it is best to additionally use waterproofing.

Laying of sheets

Before the beginning of roofing works, it is especially important to choose the right material for the roof. Ondulin will be the best solution for this, which will allow creating a reliable and durable construction. After completing all the above works, you can start laying the sheets, this technology is similar to the installation of slate, but the technique in this case is simpler.

Mounting is carried out in such a way that vertical seams go unchallenged. To do this, the first row should begin with a whole sheet, while the second one should start with a half. By analogy with the slate, the master will have to align the canvas with the cornice.

It is recommended that the sheets are fastened to the sheathing system with nails with plastic caps for the hats. However, in some cases, self-tapping screws are used, as well as roofing nails. But in the latter case, the technology will be broken, so there may be emergency situations, which the manufacturer will not accept as claims.

The roof of the ondulin is mounted in such a way that about 20 nails should go on one sheet. The lower part of the canvas is fixed in each upper wave, on the following elements the fastening is performed in staggered order, the fasteners will need to be installed through one wave. As practice shows, difficulties can arise at the time of closing the caps on nails, experts recommend closing them on the ground, scoring in the right position.

Methods of work

In the installation instructions, you can find information on the overlap parameters. In the case of adjacent sheets, it should form two waves, while a vertical overlap is equivalent to 30 centimeters, which is true for a 10-degree slope. At a slope of 15 degrees, the overlap should be 20 centimeters in the case of a vertical joint and one wave for lateral overlap.

In order to maintain the same level of entry of one sheet on another, you must first apply a line of punching to the surface of the sheets. If the roof of the ondulin will settle on the surface of the metal frame, then the nails should be replaced with screws. At the beginning of the work, it is necessary to take into account the direction of the wind, which prevails in a certain area.

The first sheets are fixed on the roof slope, which is located on the opposite side of the wind direction. The second row starts with half a sheet, in this case the laying will be much more convenient, and the material consumption can be reduced. This is due to the fact that the overlap of the lateral joint will be three sheets, not four.

Skate and end design

If you decided to use ondulin for the work, it is recommended to review the photo of the roofs beforehand. Perhaps this will help to understand how best to carry out the work. As soon as you move to fixing the roof ridge, it should be started using the same technology as the slate itself. It is mounted on the inner parts of the waves to the additional elements of the crate.

When decorating the ends you should use the elements made of ondulin. For them an additional crate is formed. The same technique should be used when designing the tongs. But it can be mounted with a simple bend, as well as fixing a part of the ondulin sheet with nails. To do this, use a gable board. But this method can be used only when the air temperature has a positive value.

Peculiarities of material calculation

Calculation of ondulin on the roof can be carried out by yourself. To do this, you need to know the basic geometric parameters. If you use a sheet whose dimensions are 0.95 x 2 meters, then its area will be equal to 1.9 square meters.

It is important to take into account the roof area when calculating. If the work is carried out at the design stage of construction, the area can be determined by projection. In doing so, you should use the knowledge of geometry. Dimensions of the ondulin for the roof are specified by the manufacturer as a useful and full value.

The surface of the roof structure is divided into separate geometric objects, for example, triangles and trapezoids. Using mathematical formulas, you can calculate the area of each element. Next, it should be noted that the roof has a certain slope. The angle of inclination of each geometric object should be determined with respect to the surface of the earth.

All the indicators that were obtained during the above calculations should be summarized, which will allow to obtain the roof area. If the projection of the structure is represented by a rectangle and the angle of inclination is 30 degrees, then the roof area can be determined by multiplying the area of the rectangle by the cosine of the slope angle. If you have the area value, you can calculate the number of sheets. To do this, the area of the roof should be divided into the useful area of the roofing sheet. The latter value will depend on the slope of the ramp and can be 1.3; 1.5; 1.6 square meters.

Appearance of joints and arrangement of ventilation

In order to properly cover the roof with undelin, you need to familiarize yourself with all the rules that provide for compliance with technology. For example, it is necessary to decorate the joint of a vertical wall and a roof by installing an apron made of ondulin. Among other things, in the designated place it is necessary to lay waterproofing, fixing the apron with nails. In order to ensure ventilation, a roof fan should be used, which is attached to each wave that is mated to the sheets.

Roof windows required to provide the attic space with sunlight are fixed with nails, and the upper part is made with a Euroshire, which is laid with an overlap to prevent rainwater from flooding. Very attractive after the completion of the work looks roofs of houses. Ondulin fixation may provide for the exclusion of lumens between the sheets and the ridge. For this, a special filler is used. Improve the waterproofing of the cornice with a special box. For the overhang of the sheet on the cornice, 70 millimeters will suffice. This parameter is the maximum.

Ventilation ducts can be formed using vent pipes, which are manufactured by the company that produces roofing material. They are fixed by nails on each wave of the base. The upper part fits over overlap.

To prevent birds and insects from getting into the gap between the sheets, a ventilation comb must be installed in this place. It is mounted using nails on the cornice under the sheet. When adjusting the metal crate and fastening the sheets with self-tapping screws, excessive fastening of the fasteners should be avoided, otherwise the material may be damaged. For the waterproofing of the joints and the connection points of the structure with the roofing windows, it is possible to use the protection of the cornices with the help of a self-adhesive strip of onduffles. It will make the valley more complete. This tape is produced by the same companies that make ondulin. If you want to use the vapor barrier layer, then you can buy the lining material "Ondutis" R70.

Recommendations for the master

If you decide to purchase on-line roofing works, photo roofs are recommended to consider even before shopping. Prior to purchase, the corresponding calculations are also made. The surface area of the roof should be determined by the cornice overhangs, and the extreme line of the structure should not be used.

Material dimensions

If the roof is covered with a non-master mantel, then before acquiring materials it is important to get acquainted with its geometric parameters in more detail. When manufacturing, the manufacturer uses certain standards, which sometimes have small errors. For example, the length of a sheet can be increased to ten millimeters or reduced to three. As for the width, the value can be increased or decreased to 5 millimeters. If we consider the standard dimensions, the length, width and thickness of the sheet will be 2000 x 950 x 3 millimeters. One sheet weighs 6 kilograms, and the height of the canvas wave is equivalent to 36 millimeters. The error can be 2 millimeters in both directions.