Ondulin more than 50 years ago as a roofing material have started to use the so-called corrugated bitumen sheets, which are represented on the Russian market today, companies ONDULIN (France) and BITUWELL (Germany). This material is made of cardboard impregnated with bitumen. The face of the sheet covering one or two protective and decorative colorful layers. The color scheme of this material is not inferior to its variety of other coverage: You can pick colors from red to green. This roof has sufficient rigidity and has a small weight (one sheet - about 6 kg). This allows you to mount bitulinnye sheets over the old roof. They are easily attached to the crate (with nails), and their styling does not require professional skills and special equipment. The service life of corrugated bitumen sheets - about 50 years, the cost - about 4.5 at. E. per sq. m. Outwardly, this story reminds asbestos-cement roofing - slate, which in Europe have long ceased to produce. It is believed that asbestos, which is part of the slate, is an environmentally harmful material. Slate In Russia, asbestos is not banned. And in our country continue to operate 24 companies producing asbestos products. Currently produced slate razlichnyz colors: red brick, yellow and blue. The paint forms a protective layer which protects the leaf from breaking down (reduces water absorption and frost resistance increases). In addition, decreases the amount of asbestos release into the atmosphere, and service life of the material increases by 1.5 times (as a whole - about 50 years). The weight is heavier slate Ondulin (10 -14 kg - 1 meter), but it is much cheaper: only 32 rubles per sheet. Slate today comes three types: ordinary corrugated roofing slate profile (IN) - sheets have a rectangular shape, undulating slate Advanced Profile (UW) - designed for devices roofs of industrial buildings, corrugated slate unified profile of (SW) - its dimensions are smaller than the UW, but higher than small-sized sheets of BO. This roofing material still enjoys great popularity in Russia. But the non-asbestos fiber-cement slate, which is on the market the German company ETERNIT, until he found a wide application of our compatriots. Obviously, because of the cost. However, everyone has the right to choose what it more to your taste. A choice is from what. Roofing work on them to start with a blank sheet. Wipe dry with a roof of grease, clean the rust and coat both sides twice with hot linseed oil. Remove grease soaked in gasoline with a cloth and varnish is applied with the addition of a dye that were noticeable omissions. Along all edges of the sheets straight the folds, then leaves on the short sides of immobile band folds in the picture. Minimum pattern consists of two sheets. At low altitude slope can prepare now for the entire length of slope and the roof connecting the long sides standing seam. Fastening sheets to produce a crate klyammerami that one end nailed to the sheathing, while others are buried in the standing seam. The distance between klyammerami -500-700 mm. THEIR cut from galvanized steel roofing in the form of strips with width of 30-40 mm and a length of 100 - 150 mm and a twist angle of 90 °. Cornice edge of the roof keep the T-shaped bone, Nailed to the edge of the cornice over 700 mm. You can use a rectangular metal strip thickness 3 - 4 mm and a width of 40-60 mm, nailing them through a 300-400 mm. The most difficult part of the steel roof - a collar around the chimney. Its better to prepare in advance - all work can be done down on the bench, and roofing sheet with a collar ready to be included in the total coverage. Roof of galvanized steel, not immediately after the device must be covered with primer and paint (at least two times). For oil-based paints (including the use of iron minium) primer is linseed oil with the addition of pigments, for nitroemaley - nitro. Care sheet roof paint protects the roof from rapid destruction. But she also over time (rather quickly) destroyed by the combined effect of her water, air, dust, sand, smoke, sun. Thus, carbon dioxide in the air combines with moisture, accelerates the destruction of the paint. Hydrogen sulfide, in most cases discolor some paints, and also affects the paint layer. Dust and sand, carried by the wind, most often affect the mechanical, abrasion paint over time. Smoke in the main polluting painted surfaces. When cleaning the roof of dirt paint layer additionally damaged by friction on it with a broom, particularly hard. In addition, the dye fades in sunlight, so it is advisable to use light-fast ink. The roof must be painted smoothly, then they will not detain myself dust and sand. Loss of elasticity of the paint layer can be a consequence of poor quality material, uneven application of paint, use krupnomolotyh pigments mixed with linseed oil. Some developers are not having gustotertoy paint, prepare cross themselves, mixing the dry paint pigments with linseed oil. The result is one of the most poor-quality paint. Bubbles on the surface to appear if the paint is applied to under-dried or poorly cleaned of dirt and soot surface on wet primer and putty. Uneven thickness of the paint layer leads to the formation of cracks as thin layers dry faster than thick. Properly deposited oil paint, cooked on a good drying oil, has a glossy surface after drying. As the destruction of paint is gradually lost its luster, it cracks and falls short of the base. In addition, steel roofs, heating under the action of sunlight, expands and breaks the old paint that has lost elasticity. This is because steel expands more than the dried paint layer, resulting in the surface a mass of small cracks. In the crack enters the water, the steel begins to rust, and require new paint. Proper and strong staining of the roof is made of three, at least twice. Staining at a time will give a bad result, and ultimately leads only to a waste of materials. Roof should be thoroughly prepared for painting, as with a properly prepared surface provides a more reliable adhesion. In the preparation process includes cleaning the roof of dust, dirt and rust, first hard, then soft broom or brush. Rusty steel brushes clean place, sweep away dust and immediately stained. After that, check whether there is cracks in the roof and pierced places that are often formed during the cleaning of steel snow shovels. Inspect the roof is best on a sunny day when even the tiniest holes clearly visible. Inspection shall be performed by two people - one, having long stick, located in the attic, the other with a piece of chalk - on the roof. Finding a hole located in the attic were knocking on his stick, and located on the roof, finding a hole, looking around him with chalk. And only by doing this work, begin to eliminate defects. Repair of the roof begin to putty the holes on ridges, carefully smoothing them with a knife. Putty is prepared on a dry chalk, sifted through a fine sieve, and the natural drying oil. Such cement is strong, resilient, adheres well to the surface and smoothed, dries well, makes cracks. Of course, this putty can also be used for glossing over small holes in the plane of the roof. Sometimes it is a thin layer of plaster on the roof, put a patch of fabric and paint over when dry. Holes in the roof glued, imposing a patch that is cut from the canvas, burlap or heavy cloth. The size of patches depends on the area of ??the repair area. Then, from gustotertogo iron or red lead on the natural drying oil is prepared liquid oil paint and impregnate her cut patches, soaking them in paint 10 - 15 min. Patches when lowering the paint must be completely dry. Pulling out of the paint, patches squeezed from its surplus, impose on previously painted, carefully stroking his arms or stiff brush. Particularly careful to smooth edges. After 5 - 7 days glued to dry patches, and you can start painting. Paint should dry weather. If prior to staining peeled roofs stood two weeks or more, the cross swept with a brush. When painting the roof for the first time the paint needs to be thinner than the next. Therefore, for the first color to dye 1 kg gustotertoy takes 0,6 - 0,7 kg of linseed oil. Liquid paint better adhere to the roof and gets into all the pores. For second and subsequent colors 1 kg gustotertoy paint takes 0,4 - 0,5 kg of linseed oil. For painting 1 m2 of the roof once required an average of: 180 - 200 of ocher, 70 - 90 of mummies, 35 - 40 grams of iron minium, 250 - 280 g copperhead. On service life is the most resistant copperhead. After 5 - 7 days after the first painting the roof painted a second time, after which a 5 - 10 days painted a third time. Oil paint dries completely, on average only 10 days. Adherence drying paint enhances the quality of work. The existing practice of painting the second time in 1 - 2 days after the first ns give high quality. Staining technique of roof is the same as when painting walls and ceilings. In the normal push the brush weight of 400 g can be painted with one hand 600 - 800 m2 of the roof. On a new roof brush wear is less than the old one. When painting the paint shade along the slope. First paint the descent of the roof, and then continue work on the ridge to the slopes. Paint brush to gain a little shade, and behold a thin layer without coarse bands and streaks. In thick layers of paint over time cracks appear, which will linger water, destroying the roof. Work on the roof should be in boots or regular shoes, but with attached felt soles that do not slide on the steel and do not destroy the recently caused a layer of paint. If the roof has no enclosing grids, it is necessary to attach the rope over the rafters, purlin, or beam, but not for the furnace and other pipes. Downspouts are painted similarly. To tubes were longer, before staining the outside dismantled, cleaned from dust, dirt, especially inside. The inner surface of paint or two or three times simultaneously with the outer surface and then set the pipe into place and securely attached. Rusted steel roofs, not only from the outside, but on the inside, ie from the attic. This usually occurs between the crate. That part of the roof, which lies on the crate, no rust, as protected by wood (planks). Rust comes from the fact that through the attic floor is warm air. From experience we know that it is often made between the crates are corroded places, but sometimes they are, and under the crate. To protect the roof from rusting, steel between the crate should be cleaned of rust stiff brush or a soft steel brush and paint one or, better yet, twice. This will prolong the life of a steel roof. If the coating of galvanized steel roofing will start to rust, then wasted no time, the rust is removed, cleaned the place primed with liquid paint and painted twice.
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