Calculation of the amount of corrugated roof

It is easy to calculate the number of sheets, but for this you need to know the dimensions of the roof, as well as its design features, for example, special protrusions, a large number of valleys, tongs, etc.

Nuances of working with material

It is worth mentioning immediately about C21, which is 35% of the NS-20 profile and fits into one corrugation with an overlap. The distance between the bars depends on the type of sheets and the height of the roof. For slopes of up to 15 degrees, a pitch of at least 30 cm is required; for other designs, this parameter can be up to 65 cm.

Stacking

Roof device technology from metal tiles selected after deciding on the type of attic. If in your case it is unheated, then usually only sheets of metal are mounted, and insulation is not required. In this situation, the roof structure is created as follows:

1. Old material is removed. It is not only about the coating itself, but also about the crate and counter-lattice. Most often, during the operation of the roof, they become unusable.
2. Preparation of structural elements. Here you need to treat with antiseptics the beam that will be used for installation, which will not only increase its service life, but also avoid unexpected problems caused by the destruction due to the appearance of rot that ate the tree in just a year.
3. Mount crate elementsover which metal will be attached.
4. Arrange sheets on a slopehaving made them at the top. Fixation is made only after you make sure that they are laid correctly.

With mansard roofs, the situation is complicated by the fact that it is also necessary to create insulation. Typically, the insulation is located between the rafters, but you need to not only position it correctly, but also provide suitable working conditions. From below, warm air saturated with water vapor will rise, so the lower part of the insulation is closed by a vapor barrier membrane.

Condensed moisture will fall from the metal profile, so the upper part of the insulating layer should have a protection in the form of a waterproof material. Today, a special membrane is used for this purpose, which retains water, but allows air to pass through the insulation.

Obviously, it is not difficult to cover the roof with metal tiles, but, besides the ones listed here, there are other nuances that you need to know for proper installation.

Information on this can be obtained from other sections our resource.

Video: installation of roofing from corrugated board