To begin with, it should be explained that the metal tile is a relatively new type of roof covering, which has a metal base covered with a special layer. By the way, dear readers of the site of the home master - your permanent author George, I first dealt with this type of roofing material 4 years ago. It includes zinc and aluminum. It is carefully ground and covered with a composition of polymer material. Therefore, the installation technology provides some features that should be taken into account. To ensure that the coating of this material is durable, it is necessary to follow a certain procedure in the process of work. That's what I will tell you today.
The order of laying metal
Regardless of which metal tile will be mounted( and its range is wide enough), the work begins with the installation of rafters and crates. This will be the frame, the foundation on which the metal tiles will be laid. For rafters, boards are usually used for 10 or 15 s with a thickness of 5 cm. To avoid the deflection of the sheets( for example, under the weight of snow), the distance between the rafters is from 50 to 80 cm. It must be borne in mind that the thickness depends directly on this distanceboards for the crate. The thinner the board, the smaller should be the gap between the rafters.
Then laying the thermal insulation layer. It is located between the rafters of rafters, filling the entire space. It is necessary to consider all the features of the insulation that was purchased.
A waterproofing layer is superimposed on top. However, there should be a small distance between the heater and the heater, the gap( recommended within 5 cm).It is needed to ensure natural ventilation, which protects the insulation from wetting( condensation) and spoilage. Therefore, you need to mount an additional( intermediate) crate.
The waterproofing layer is applied horizontally. For better styling, it is fixed in several places on the intermediate crate( you can use a construction stapler).The film of waterproofing lays down "overlap", and from above there should be an edge of the strip, which is closer to the ridge of the roof. This will prevent joints from water ingress. When the entire layer is laid, then its final fixing is carried out with the help of racks( controllay).Reiki should be fastened in places of joints of bands of insulation film. However, it is possible and not to make an additional crate, if to use for waterproofing a material that is good for vapor transmission.
Metal tile is laid from the bottom left corner. In this case, the next sheet will cover the previous one, and not "slip" under it. This method avoids scratches on the sheets. Laying of sheets is carried out strictly parallel to the cornice, while they are lowered 5 cm lower. Stacking is done in several ways.
You can first lay all the sheets of the first( lower) row, and then stack the second horizontal row. You can do vertical mounting. It depends on the location of the attic window, the exhaust pipes, etc. In short, how convenient for the master.
It should be noted that at the corners of the roof you get some "discontinuity" of the sheets. Therefore, when laying them, you need to make a small displacement of each sheet counter-clockwise( if stacking is from left to right).In the process of work, you need to control the line along the right edges of the sheets.
Sheet metal sheets are fastened to the crate in places of the lower part of the "wave".Mounting is done by screws. The lower part of the roof needs reinforced fastening. Here it should be more frequent, since in strong winds the sheets will "rise".In places of "docking" of sheets it is also necessary to make an additional fastening to the crate.
These are only general recommendations for the installation of metal. The specific methodology is individual and depends, first of all, on the configuration of the roof.
See also video instruction for metal tiling installation: