Any construction work requires accuracy, accuracy and strict compliance with the instructions. Roofing work is no exception. At this stage of construction, any, even a small negligence can negate all the efforts spent and lead to a loss of time and money. Mounting the roofing, you must strictly adhere to the technology, which depends on which roofing material you prefer. Within the framework of this material, we will consider the technology of installation of flexible tiles. Let's talk about the peculiarities of this wonderful roofing material And how to work with it properly.
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What is soft shingles?
Now it is, perhaps, one of the most popular roofing materials, which competes on an equal footing with such not less popular material as metal roofing. The basis of flexible shingles is glass fiber or fiberglass. A special bitumen is applied to the substrate. The front side of the shingles is covered with mineral crumb, which, in addition, protects the tile sheet from the harmful effects of ultraviolet radiation. From the bottom, the sheet of tile is covered with self-adhesive bitumen, on which a protective film is glued.
Advantages of flexible roof tiles:
- High resistance to fire.
- Light weight.
- Beautiful appearance.
- Easy and simple to install.
- High resistance to mechanical damage and weathering.
An important point: soft tiles can be laid only on the roof, the minimum slope of which is 12 degrees. If the slope is less, this material can not be used. In addition, if the slope is minimal, that is 12-18 degrees, a so-called carpet is placed under the shingles. According to the maximum deviation there are no restrictions, flexible tiles can be mounted even on vertical surfaces.
Preparation of the basis
As a basis for laying shingles, it is recommended to use osb plates, thick plywood or flooring from planks. If a board is used, it should be grooved or edged and have a minimum width of 15 centimeters. The distance between the boards should not exceed 5 millimeters. For sheets of plywood and OSB slabs, it is necessary to calculate the distance between the rafters in advance, since the edges of the plywood sheets must lie on the rafters. Therefore, we recommend plates osb buy, as well as plywood with a stock. The thickness of materials that are selected for the base, depends on the distance between the rafters. Once the base is ready, it must be treated with fire-fighting and antifungal impregnation.
It should be noted that it is not so difficult to mount the shingles shingles, as it may seem at first glance, it is only necessary to strictly follow the instructions. First the rafters are assembled, then heat and vapor insulation materials are laid. After this, the installation of the crate and metal fasteners begins. Next, you can make a backing layer directly under the flexible tile. The backing layer is a special roofing carpet. It is placed on the cornices, on the end parts of the roof and also on the skates. But if the slope is minimal, then the roofing carpet is used throughout the roof area.
Laying carpet mount, starting from the bottom, overlapping bands should be at least ten centimeters. The edges are nailed, for additional fixation, roofing glue is used. Immediately before the installation of flexible roof tiles, eaves are installed.
Mark the roof
The technology of installation of flexible tiles is such that the laying starts from the middle of the bottom-up with indentations to the right and to the left. However, the installation will be much easier and faster if the roofing is pre-marked, because of the small size of the tile itself, the curvature of the rows can go. Experienced masters in the markup do not need, but if you do the installation of flexible shingles to your hands, and for the first time, without marking you can not do.
Marking the roof is not difficult. To do this, across the ramp from top to bottom, draw two parallel straight lines. The distance between them should be 50 centimeters. Thanks to these lines it will be possible to control the shift of the shingles horizontally. Since the installation of tile sheets goes from bottom to top, we add perpendicular ms to these lines by a distance of 25 centimeters. This will be the marking, according to which it will not be so difficult to put the tile in even rows.
Mounting process
As already mentioned above, the installation of flexible bituminous shingles must begin from the bottom, from the roof slope. On the first row you need to paste a special adhesive strip or the row of shingles is placed with the bottom side up. The first row of shingles is stacked, not taking into account the layout, but focusing on the roof slope. The remaining rows are already in line with the markup. Laying shingles is very simple due to the presence of an adhesive backing. But for additional insurance, each sheet is necessarily fastened with nails - screwed or screwed, four pieces per sheet. Beat along the edges and in the center of the leaf. The upper row is laid in such a way that the bottom of the petal of the top sheet lies between the petals of the lower row.
The horse and valleys
Skates are placed on skates in two ways - open and closed gutter. In the first case, two lines from the ridge to the roof slopes are marked with chalk or a construction pencil. From the central axis of the valley, the distance between the lines at the ridge should be 7.5 centimeters. Below every meter of the roof, these lines should be one centimeter apart. During the installation process, the roof sheets are cut strictly along these lines. In the upper row a corner is cut out. On it rainwater will drain into the valley.
If a closed trough is made, then the edges of the sheets are not cut off, and glue and nails are attached from the other side of the trough. Cropped sheets only in the upper row, near the ridge. It turns out securely closed trough.
Ventilation, flanks, chimneys
Very often on the roof there are exits of ventilation shafts, most often of round shape. They need to mount rubber bushings, attach to the base with glue and nails. Shingles before laying in such places must be treated with roofing glue. The edges of the cut sheets are formed under the flange. The sides are closed with a triangular bar. The triangular bar is necessary in order to smooth the angle of abutment to the vertical surface.
The carpet and shingles are turned vertically upwards and fixed using a special vertical apron or outer skin. Actually, the instruction for the installation of flexible tiles provides for the installation of triangular bars near all vertical surfaces.
Water often accumulates behind chimneys, which in time can lead to leakage. To avoid this, the chimneys are arranged anti-slope on the roofing. The carpet and tile fold and fold to the triangular bar. At the top, you need to mount an apron from the laying carpet, the corners of which are attached to the vertical wall and roof. In this case, the corners must be very carefully glued with roofing glue and nailed.
If the house is made of wood, it will necessarily shrink toward the chimney. Therefore, the so-called lath bar is fixed to the chimney, which at least 20 centimeters should cover the entire structure of the lining carpet and flexible roof tiles. At the same time, both designs are independent, that is, when shrinking the house, the overlapping bar will not allow the gap between the bar on which the laying carpet and flexible tiles are fixed, and, in fact, the chimney.
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