Technology roofing of metal. Installation instructions. Cutting of metal tiles, screws for metal tiles
Over the past decades, the roof of metal occupies a leading position. Ease, durability and ease of installation - these are the main advantages of this material. The technology of metal roofing is quite simple and can be done by anyone who cares about a warm and comfortable home.
Preparation for work
The roof is a multi-layered element, and it is necessary to take a responsible approach to the implementation of each type of work, observing technology. For a start, it is important to determine which roof you need: warm or cold. If the house has one floor and does not provide an attic, from an economic point of view, cold - the best option.If you have two floors and the second is under the roof, in this case it is necessary to arrange a warm roof.
The technology of roofing of metal depends on what kind of warm or cold, you need. Naturally, a warm roof requires more labor and additional materials. Therefore, the first stop on it.
Warm roof device
A distinctive feature of this design is the installation of a vapor barrier layer. For this purpose it is better to use rolled membranes than polyethylene film. They are not sealed, so moist air, without accumulating, passes freely. Membranes are laid on rafters from bottom to top. Layers overlap, quite tightly fixed with nails, and the seams are glued with building tape.
Technology of roofing of metalassumes after the vapor barrier the arrangement of insulation. To do this, use any kind of insulation: glass wool or mineral wool. Glass wool has a low cost, does not burn, but can cause skin irritation. Mineral wool is also not subject to burning, has a low cost and does not cause allergies.Cotton wool is sold in rolls, it is convenient to lay it between the rafters. If you need to lay several layers of insulation, then it should be done so that the joints of the first layer overlap the second, this ensures the elimination of possible leakage of cold air.
The next step in the technology of roofing of metal is the installation of waterproofing. The need for its arrangement is explained by the fact that condensate forms on the inside of the tile. To prevent it from getting to the insulation, it is necessary to install waterproofing. As it can be used film, it has a low cost and good performance. Lay it on the rafters and fasten with nails.
When installing a cold construction, the technology of roofing metal does not change, the difference is that the insulation does not fit on the rafters, but in the attic. In this case, the house itself is protected from heat loss, and the roof is freely ventilated.
Characteristics of metal tiles
The tile sheet consists of a layer of steel, which is coated on both sides with a galvanized layer that prevents moisture, and then there is a layer of polymer on the inside and the outside.The thickness of this layer determines such parameters as durability and reliability. The type of polymer coating tiles can be smooth or textured and consist of polyvinyl chloride, polyurethane, acrylate. The cost of metal depends on the thickness of the protective layer, color, shape, as well as the country of origin.
Any sheet of tile, regardless of manufacturer, has two sizes: nominal and effective. Laying metal is overlapped. When buying, you must consider this particular size, and not the nominal one.
Lathing arrangement rules
The level of roofing works depends on the quality of the batten. As a rule, a metal crate of 50 * 50 mm and a wooden plank is used for metal tiles. First perform the control crate along the eaves, pediment and ridge. To do this, use a wooden board and nails of considerable length with a galvanized layer. Installation instructions metal tile and technologyrequires that the surface is perfectly flat. Therefore, it is necessary to make markup for crates. The first step is done less than all the others, becauseit must be remembered that a drain passes along the eaves, and the bottom row of the tile should leave two thirds of its width. The fastening pitch depends on the width of the metal tile. After the markings are made, a horizontal packing of the wooden beam to the rafters is carried out.
The roof of the metal: installation and calculation
After making the crates, you need to calculate the amount of material needed To do this, first determine the height and width of each slope of the roof separately. Individually for each calculation of the tile. If the roof is of a complex configuration and has small slopes, then the tiles will have to be cut, which leads to a violation of the protective layer and the occurrence of corrosion. To eliminate this, cutting metalshould be heldneatly using a special tool. After determining the area of each slope, the number of sheets of tiles required by the effective size is calculated. Standard sheets have a different number of waves: 10, 6, 3 and 1. Therefore, in terms of maintaining tightness, it is better to acquire sheets of the greatest width, although their installation is a bit more complicated.The installation instructions for metal tiles allow the combination of sheets with different numbers of waves.
Ideally, the roof of the tiles should be covered with sheets with a minimum number of seams, since they significantly affect the tightness. You can buy a metal tile for a specific size of the slope, but the cost in this case will be slightly higher than the standard.
If the roof is double-sided, i.e. simple, the calculation of the required number of tiles is quite simple. For this, the height and width of each slope are determined, the area is calculated, summed up and 10% added. It is also necessary to calculate the length of the constituent elements, such as valleys and sheets for joining sheets.
Fastening metal is carried out using screws, screws, which are screwed overlap every meter using a rubber gasket. If the roof is simple and the sheet of tile is matched to the size of the slope, then the installation is carried out from the ridge down, checking the level relative to the end. If the height of the roof exceeds the length of the tile sheet, then installation begins from the bottom up. First, the sheets are joined along the length, then they are aligned on the end.
Installation of additional elements of the roof
If the installation of metal tile is completed, proceed to the installation of end strips. They are fastened with screws every 50 centimeters with an overlap of at least 5 centimeters. The ridge is also attached with screws to the top rail.
For ventilation of the roof, it is necessary to arrange ventilation channels, the exit under which is laid during the installation of rafters. The ventilation pipe is attached to the sheet metal, in which the hole is pre-made. Fastening produced using screws for metal, and then the seams are further processed with silicone.
The sewer outlet is connected to the riser in the house and displayed on the roof. The process of the device of this output is similar to the installation of the ventilation duct.
If necessary, additional elements are installed on the roof, such as stairs, roof fencing and transitional bridges.
The element that must be installed is the snow holder. Usually it is equipped above the exit, window opening. If desired, the design can be installed around the perimeter and where there is a junction of metal to another level of the roof.
Device drainage system
Equally important is the device drainage system.Troughs held by holders are mounted on the entire roof. Holders are attached to the wooden cornice at the stage of crates. They are mounted with a slope. According to the technology, outlet funnels should be installed every 10 meters, which are fixed with flanges. The fastening between the grooves or the corners is done with overlapping connectors with a margin of 3 centimeters.
This roofing material has a brittle outer coating, so when laying metalAvoid scratches and damage to the polymer layer. If this could not be avoided, it is necessary to apply a special paint that will not allow corrosion to develop further. Also, due to the small thickness, it requires additional noise insulation.
Nevertheless, the advantages of this material is much greater. A variety of colors and shapes allow the roof to give an impeccable look. Despite the large size of the sheets, they weigh a little, and the fastening of metal tiles is made fairly quickly at any time of the year. The use of tiles provides a significantly smaller number of joints and seams, which is impossible to achieve when using slate.The roof, made with all the technological requirements, will be sealed and will not require additional repair for many years.