Flexible roof: types, device, installation

Flexible roofing is a modern coating that includes polymeric additives and bituminous resins related to composite materials. Thanks to the polymer component and bitumen mastic with special additives, as well as glass fibers, it was possible to create a new roofing coating, which is structurally different from its predecessors. All materials have water-repellent characteristics, they do not deteriorate or collapse under the influence of moisture.

Varieties of soft roofing

Flexible roof is divided into main types, among them one can distinguish flexible tile, bitumen, ecologically clean roof and membrane. In the production of the first special fiberglass is used, which are impregnated with bitumen and are supplemented with stone crumbs. This shingles is a layer of cardboard, which is covered with bitumen on both sides. Outwardly, such a material can resemble a roll coating or shingles.

Features of natural roofing

Reeds are used in the manufacture of soft, environmentally friendly blood, but quite often other natural materials are used in the process. The basis of the membrane roof is the PVC material, which is characterized by high wear-resistant characteristics. It has an excellent appearance, is not afraid of temperature changes and does not burn out, keeping the original color for a long time.

Technology of laying shingles: preparatory stage

If you will be equipped with a roof of flexible shingles, then it is necessary to make preparatory work. For this, calculations are made and the amount of material necessary for the acquisition is determined. To stack it it is necessary with an overlap, the size of which will depend on the steepness of the roof. The surface is pre-prepared, for this, an even base or a system of a crate is formed. To do this, you can use different materials, including wood.

When creating a solid flooring, it is possible to use a moisture-resistant chipboard or plywood with water repellant characteristics, edging boards or sheet metal material. When creating such a surface, it is necessary to provide a gap of 3 millimeters between the elements to compensate for the temperature expansion of the parts when the external conditions change.

Plywood around the edges is fixed with nails or self-tapping screws. In order to ensure a long life of the wooden components of the frame, they are treated with antiseptics and flame retardants. It should be borne in mind that the statistical and wind load will affect the roof elements, even if they are supposed to be made of soft tiles. When designing, you should take into account the height, which is determined depending on the direction and strength of the prevailing winds, as well as the volume of falling snow.

Design features

Based on this information, it is necessary to use rafters with the correct pitch and the required thickness. If the distance between the rafters is 60 cm, then the thickness of the plywood should be 1.2 cm, the plate will have the same thickness, but the thickness of the board will be 2 cm. If between the rafters will be provided a distance of 150 cm, the thickness of the plywood and the thickness Plates will be equal to 2.7 cm, and as to the thickness of the board, this figure increases to 3.7 cm.

If the overhangs of the cornice are to be covered with siding, it will be necessary to install a grate for ventilation, it is also called a soffit strip. With the help of this constructive element, air will flow into the air.

Installation of the lining layer

Flexible bituminous roofs can have a slope of more than 18 degrees, while an additional layer of waterproofing is needed, which is located along the end and cornice edges of the roof, because they are considered to be the places of the most probable penetration of moisture. Their width should be about 40 centimeters from the edge.

It is best to bring the material to the surface of the facade.

Advice of a specialist

According to the recommendations of professionals, the horseshoe should also be covered with insulation, providing 25 centimeters on each side. If the slope is from 12 to 18 degrees, then an additional layer under the tile will need to be laid over the whole surface of the roof slope. This operation starts from the bottom, and you need to create an overlap between the layers. The rolled material is reinforced with special nails with galvanizing. The size of their caps should be as large as possible, fixing should be done every 20 centimeters. The joints must be treated with bituminous mastic to ensure tightness.

Laying of shingles

If you will fit a flexible soft roof, which is called bituminous shingles, then you need to make a marking of the ramp to determine the connection of shingles after the window. This is true when a dormer window is provided. In order to color the surface was uniform, you should use tiles from several packages. Mount it in rows, following from the edge of the roof to the top. The work should begin from the lower edge of the ramp, moving to the central part of the cornice in the direction of the pediments.

Initially, the series is set in such a way as to provide a distance between the beginning of the cornice tile and the lower edges of the tile petals about 3 centimeters.

The extreme element from which the second row begins to be laid should be arranged so that a pattern is formed. This will block the mechanical fastening of the previous row. On the edge of the pediment eaves should be cut off the element, and after processing with bituminous glue for a width of 10 centimeters.

If, when considering the types of flexible roofing, you have chosen a bitumen version of it, then you should start laying with removal from the shingles of the protective film. After each tile is fixed to the base with 5 nails, the next layer is nailed to the previous one. In the future, the tiles will be glued together and glued to the battens under the influence of solar heat.

Tips for laying shingles

Soft tiles should dock with the wall, in the place where the roof slope connects to the vertical surface. To do this, in the designated place, you need to strengthen the triangular rails on which the soft roof is put. Above is the band of the endow carpet, and after it is pasted with bituminous mastic. The strip should go to the wall by 30 centimeters, and in zones with heavy snowfall, the approach should be increased.

On top of the resulting junction, it is necessary to lay a metal apron, and then cover with bituminous mastic. When the soft tile is laid, the sealing of the outlets of the chimneys is carried out in a similar way. If the brick pipe in the cross section has the shape of a square with a side of 0.5 meters, then it is recommended to arrange a chimney for the pipe, which will exclude the accumulation of snow. To conduct through the roof of the antenna, as well as pipes, communication and sealing of the passages, it is necessary to use the passage elements created especially for flexible bituminous shingles. Their fastening is carried out by nails.

Recommendations for the installation of shingles "Shinglas"

If you chose the flexible roof "Shinglas" for the roof construction work, it is important to take into account that each package is designed for 3 square meters of surface. This is true in view of all the necessary overlaps when stacking. On 1 square meter will take about 80 grams of special roofing nails. Installation work is accompanied by the application of mastic, increasing the flow rate does not lead to better adhesion. On the end parts will take about 100 grams per 1 running meter. On endovym carpet will need 400 grams per 1 running meter. As for sealing the junctions, you will need 750 grams per 1 running meter.

If for the base you have decided to use large-scale flooring, then its installation should be carried out taking into account the seam breakdown, fix the material with self-tapping screws or special nails.

When such a roof is laid on solid wooden flooring, it is important to pay attention to the fact that the annual rings are oriented with bulges upward. Use of damp wood is not recommended, but if there is no other option, then the end of the edging or sheet piling on each side must be fixed with two screws.

Mounting of the membrane roof: ballast method

As mentioned above, the flexible roof can be membrane, which can be fixed in different ways. As one of them is the use of ballast, which facilitates the work. This technology is applicable in the case when the roof slope is less than 15 degrees. The membrane is mounted on the surface, after the material is leveled and fixed around the perimeter with the help of welding or glue. In those places where the membrane will be adjacent to the vertical elements of the roof, it must be carefully fixed.

Such a flexible roof provides for the laying of ballast, as the best of its kind is river pebble, the average fraction of which is from 20 to 40 millimeters. You can use gravel, as well as rolled ballast. Ballast should have a weight of 50 kilograms per square meter or more. If you have prepared for work ballast in the form of untinted gravel or stone battle, then the membrane liner must be additionally protected from possible damages. To do this, the installation of a flexible roof is accompanied by the laying of a non-woven fabric, whose density is 500 grams per square meter or more.

Sometimes professionals use special mats.

Cost

If flexible roofing is used for the work, the price should be of interest to the consumer. Manufacturer "Shinglas" represents for sale bitumen tiles in several series. For example, Finnish tiles are cheaper than other varieties, its price is 219 rubles per square meter. Most of all it is necessary to pay for a laminated version, one square meter of which costs 514 rubles. In the average price range is a classic series of this material, the warranty period of which is 15 years. The average cost of such material is about 340 rubles per square meter.