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Sheet roofing

Title seam roof, perhaps, you will say no entries. Well met somewhere somehow sometime by mistake. And in fact, you can not even imagine what the roofing sheet, folded roof! It's simple: it is the most convenient and most efficient in the use of ROOF. Called seam roof sheet and rolled galvanized steel (as-coated or not), as well as the roof of the non-ferrous metals. Standing seam roofing - it's metal roof, in which the compounds of individual elements of coating (painting) made with the help of rebates.

Painting - the element of roofing, whose edges are prepared for the rebate. Rebate (rebate) - view seam formed when connecting sheet metal roofing. Distinguish seamed connection recumbent and upright, single and double. The side edge of the long strips of steel, running along a slope, connect the standing seam, and horizontal - immobile. Folds executed (rolled) or manually by special tool or a modern way - with special electro-mechanical seamers devices. Today there is another kind of rebate - Self-locking. They connect with each other without using a tool

The most hermetic and waterproof is a double standing seam - a longitudinal connection acting above the plane of the roof between two adjacent roof paintings, the edges of which have a double bend. To date, standing seam roofing in the West countries carried out mainly using a double standing seam. The leading firms that use Western equipment, also crossed for this type of compound roof paintings. And today's construction market a large number of companies offering the device on the roof of modern technologies. Unfortunately, to check whether they are up to date on sales documentation is not easy. The complexity of the roof structure is in a high percentage of the hidden works, errors that occur only during the operation of the roof. There are examples when the construction of roofs unprofessional artists led to the need for complete replacement of the roof covering.

When the device according to the modern roofing (rolls) of technology is very important is the competent execution of adjacencies. Unfortunately, to date, developed types of sites is not enough, especially for reconstruction buildings in the historic building. So priceless experience Specialized construction companies, which have long been working on the roll technology and have their own technological developments, highly literate professionals, which gives them the opportunity to perform roofing work with high quality. Often such companies, having a data bank of different project solutions that can provide expert help as their partners, and designers.

There are a number of indicators by which one can determine how much of the firm can be trusted not easy for roofing device. First of all, it is the presence of a license, registered trademarks, patents, letters of reference customers and photos of completed projects. The key to the reliability of the company are as guarantees for work, and penalties on marriage and the failure of completion dates. Customer must advance to ensure availability of certificates for materials to be used in the work their absence could lead to big losses. If all the above mentioned documents are available, then it is a good base to start cooperation.

The device seam roof

One of them is a ladder that consists of simple wedge-shaped steps, which rely for its wide end on the surrounding walls and narrow - on the middle bearing pillar. Another option - single stage konsoleobrazno protrude from the middle of monolithic support column. Such a ladder may be far from the walls (even in the middle of the room). The third type differs from the previous lack of internal reference column. Steps are sealed in a curved (concave) wall.

Recommended roof pitch when using folding technology - more than 140. At lower slopes of the roof (from 70 to 140) is compulsory unit solid base, as well as the use of double seam, packed with silicone sealant.

Violation of the required parameters leads to the formation of condensate on the inner side of the sheets, which can also cause premature corrosion. Used connecting parts, such as nails, screws, wires, clamps, they must necessarily be made of galvanized steel. This is done in order to have the same service life as the topcoat. To date, the traditional standing seam technology devices roofs of sheet metal (using a special hammer) superseded by new, modern technology devices roofs of roll metal (with power tools), which improves the quality of welds and significantly increases the productivity of roofers. Consider these two technologies in more detail.

Traditional technology devices roofs of sheet steel, requires highly skilled roofers. Works are carried out in several stages. First step: manufacture of paintings for the average coverage roof slopes, eaves, wall trenches, razzhelobov. For the first blank paintings directly on the building site made the necessary blank forms and sizes (in future drafts of the roof). Steel sheet is marked on the details with instruments and tools are applied to the metal box. Then, the steel sheet according to the thickness, cut various types of scissors and connected bedridden seam pattern in a length in the ramp, the side edges are folded, i.e. make the workpiece to perform the standing seam.

The second step: paintings raise the roof and connect them to the sides of each other standing seam (often single). Then the picture is attached to a crate narrow steel strips - capping, which led into one end standing seam when they bend, and the other is attached to the beam purlins. Thus, a high-quality roofing, without any technological holes. Holes from smoke and gas pipes, including ventilation, close aprons made of galvanized steel.

Galvanized roofing can not be painted with conventional enamels, nitro - and oil paints. For this purpose, there are special paints, although they are quite expensive (about 1 $/m2).

roll technology is so named because the picture made roofing directly at the construction sites of the metal delivered in rolls, and can have virtually any length. It is this avoids cross (lying) folds and, accordingly, the main places of leaks. The compound roof paintings carried out, as a rule, in a double standing seam. To ensure complete impermeability of the compounds, as mentioned above, seam can be sealed with silicone sealant. To use the roll technology necessary modern equipment, including machines for cutting metal, a special bending and sealing machines and others. The roll technology is the most advanced and allows you to organize the modern standing seam roof both from a simple galvanized steel coils and galvanized with polymer coatings. < br />
The advantage of roll technology is:

 
  • the possibility of using not only galvanized steel, and steel coated with polymer which, compared with the first more corrosion - and wear resistant, and thus more durable;
  • ensuring a high degree of tightness of the coating due to the stand-up double seaming welt seams of adjacent longitudinal roofing sheet (usually in the absence of horizontal lying rebate);
  • the method of the device of the roof almost noiseless, which is extremely important when working in densely populated areas;
  • the ability to use technology for roofs with any bias, any complex configuration of any size;
  • Mobility of certain kinds of equipment that allows you to perform all the work not only directly on site, but even directly to attic;
  • water drainage system (gutters, rectangular and half-round gutters pipes, elbows to the gutter system) is made of the same materials as the roofing.

    Ondulin

    More than 50 years ago as a roofing material have started to use the so-called corrugated bitumen sheets that are presented on the market today, companies ONDULIN (France) and BITUWELL (Germany). This material is made of cardboard, impregnated with bitumen. The face of the sheet is coated with one or two protective and decorative colorful layer. The color scheme of this material is not inferior to other coatings by its diversity: you can choose colors from red to green.

    Such roof has sufficient rigidity and is lightweight (one sheet - about 6 kg). This allows you to mount bitulinnye sheets on the old roof. They are easily attached to the crate (with nails), their styling does not require special skills and equipment. The service life of corrugated bitumen sheets - about 50 years, the cost - at around 4.5 .e. per sq.m.

    Outwardly, this story reminds asbestos cement roofing - slate, which in Europe had long been released. It is believed that asbestos, which is part of the slate, is an environmentally harmful material.

    Slate

    Currently produced slate colors: brick red, yellow, blue. The paint forms a protective layer that protects the leaf from being destroyed (reduced water absorption and frost resistance increases). In addition, the reduced amount of release of asbestos into the atmosphere, and the service life of the material is increased by 1.5 times (total - 50 years). By weight heavier than the slate Ondulina (10 -14 kg - 1 meter), but it is much cheaper: only 32 rubles per sheet.

    Today slate produced three versions:
     
  • Profile slate wavy ordinary (IN) - Prices have a rectangular shape;
  • wavy slate improved profile (VU) - for devices roofs of industrial buildings;
  • wavy slate unified profile (SW) - its size is less than the slave, but exceed the small-sized sheets of BO.

    This roofing material still enjoys wide popularity. But non-asbestos fiber-cement roofing slate, which is on the market the German company ETERNIT, is not widely accepted among our countrymen. Obviously, because of the high cost. However, everyone has the right to choose what is more to their liking. And there are plenty to choose.

    Works on the roof

    They start with a blank sheet. The roof wipe it dry of grease, clean rust and coated on both sides twice with hot linseed oil. Grease removed soaked in gasoline with a cloth and varnish is applied with the addition of dye to were noticeable omissions. Along the edges of the sheets are folded folds, then the sheets on the short side is connected immobile folds in the picture. Minimum pattern consists of two sheets. At low altitude slope can prepare now for the whole length of the ramp on the roof and connect the long sides standing seam.

    Fastening sheets to produce a crate clamps that are nailed to one end of the crate, while others are buried in the standing seam. The distance between the clamps -500-700 mm. THEIR cut galvanized steel roofing in the form of strips of width 30-40 mm and a length of 100 to 150 mm, and are twisted at an angle of 90 deg &
    ;.
    Cornice edge of the roof keep the T-shaped crutches, nailed on the edge of the eaves by 700 mm. You can use a rectangular metal strip thickness of 3 to 4 mm and a width of 40-60 mm, nailing them through 300-400 mm.

    The most difficult part of the steel roof - collar around the chimney. It is better to make in advance - all the work can be done down on the bench, and roofing sheet with a prepared collar included in the total coverage. The roof of galvanized steel is not immediately after the device should be covered with primer and paint (at least twice). For oil-based paints (including the use of iron oxide) primer is drying oil with the addition of pigments to nitroenamels - nitrogruntovka.

    Care roofing sheet

    Applying the paint protects the roof from rapid destruction. But it is over time (rather quickly) destroyed by the joint influence on it of water, air, dust, sand, smoke, sun. Thus, carbon dioxide contained in the air combines with moisture accelerates the degradation of paint. Hydrogen sulfide is in most cases discolor some paints and also adversely affect the paint layer. The dust and sand, entrained by the wind, often act mechanically istiraya paint over time. Smoke in the main polluting painted surfaces. When cleaning the roof from dirt paint layer further damaged by rubbing over it with a broom, particularly hard. In addition, the paint fade when exposed to sunlight, so it is advisable to use light-fast ink.

    The surfaces of the roof should be painted smoothly, then they will not detain myself dust and sand. Loss of elasticity of the paint layer can be the result of poor quality material, the uneven application of layers of paint, applying Coarsely pigments mixed with linseed oil. Some developers without dough paint prepared ce themselves by mixing dry paint pigments with linseed oil. The result is a poor quality of the paint. Bubbles on the surface to appear, if the paint is applied to the dried inadequate or poorly cleaned from dirt and grime surface on free of wet coats and fillings. Uneven film thickness leads to the formation of cracks, since thin layers of fat dry faster. Properly applied oil paint, cooked on a good drying oil has a shiny surface after drying. With the destruction of the paint it is gradually lost luster, it cracks and falls short of the base.
    In addition, steel roofs, heating under the influence of sunlight, expands and breaks the old paint has lost its elasticity. This is because the steel expands more than the dried paint layer, whereby the surface formed by the mass of small cracks. The crack gets water, steel begins to rust and requires a new painting.

    Proper and strong staining of the roof is made of the three, at least twice. Staining at a time will give a bad result and ultimately leads only to a waste of materials.

    The roof should be carefully prepared for painting, as with a properly prepared surface provides a secure grip paint. In the preparation process includes cleaning of the roof from dust, dirt and rust at first hard and then soft broom or brush. Rusty steel brushes clean the place, sweep away the dust, and immediately stained. After this, check that there are no cracks in the roof and pierced places that are often formed during the cleaning snow steel shovels. Inspect the roof is best on a sunny day when even the smallest holes are clearly visible. The inspection is two people - one that has a long stick, located in the attic, the other with a piece of chalk - on the roof. Finding the hole, located in the attic of knocking on it with a stick, and located on the roof, finding the hole, encircles it with chalk. And only by doing this work, proceed to the elimination of defects.

    Repair of the roof start to putty the holes on ridges, carefully smoothing them with a knife. Putty is prepared on dry chalk sifted through a fine sieve, and natural drying oil. This putty is strong, elastic, adheres well to the surface and smoothed, dries well, gives the cracks. Of course, the putty can be used for glossing over the small holes in the plane of the roof. Sometimes it is a thin layer of plaster on the roof, put a patch of cloth and after drying paint over.

    Holes in the roof are sealed, applying patches, which are cut from the canvas, burlap, or thick tissue. The size of patches depends on the area of ​​the repair area. Then, the dough-like iron or lead minium on natural drying oil is prepared liquid oil paint and impregnated her cut patches, keeping them in the paint 10 - 15 minutes. Patches is lowered into the paint must be completely dry. Pulling out of the paint, patches squeezed from its surplus applied to the previously shaded place, carefully smoothing her hands or stiff brush. Be particularly careful to smooth the edges.
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