The lattice under metal tile serves as a peculiar skeleton for roofing. To create it, various material can be used: boards, bars, metal corners, wood leaf material. Laying of such materials is performed in the perpendicular direction relative to the rafter feet, and the mount - with the help of self-tapping screws or nails.

Installation of crates for metal tile is needed so that the mass of the roofing coating is distributed uniformly on the rapid system. This is important for the normal functioning of the roof and strength of the whole building structure.

Some features and rules for creating crates for metal tile

1. There are two types of crates: sparse and solid. The latter can be built of boards or sheet material (plywood, OSB sheets). Boards are laid with a gap of 10 mm to compensate for expansion with an increase in air humidity. Sheet material can be laid online.
2. Work on the device of the crate can only be performed in dry weather, without wind. This is due to the danger of work at the height and the possibility of wetting boards and BRUSEV.
3. The most suitable for metal tile is a sparse necker. Her step is selected depending on the profile step. So, the cutter under the Cascade metal tile should be performed in a step of 350 mm.
4. Lumber for work can be used only dried in natural conditions, without signs of strokes treated with antiseptic means and antipirens.
5. The pitch of the crates for metal tile should be minimal on the ribs of the rods and on the atmis. Begins the laying of roofing material from below, therefore, the backbone sinks form first of all.
6. A board is hung along the cornese swelling. Its thickness should be about 10-15 mm more than others in order to compensate for the drop in the level of the tile attachments at the end of the wave and in the middle.
7. The wind board should be no lower sheet metal tile. To the latter, with the help of additional boards, the skating plank is mounted.

When installing the crates, the following rules should follow.

1. The block angle of the roof should not be less than 14 degrees.
2. In the field of adjustment to the main roof of the funds, attic windows, ventilation and chimney pipes apply a solid crate.
3. Brackets for fastening the drainage are installed before the gutter is fixed. The cornice bar should take its place before the roofing material is mounted.
4. At the disposal of the attic (residential premises in the attic), pair-and waterproofing film should be laid. It will protect the insulation from condensate and atmospheric moisture. Excessively pulling the film is impossible. It is placed from below, while the upper panels have a mustache on the lower. Fasten the film by a construction stapler.
5. It is necessary to take measures to ensure ventilation of the underpowering space. It is necessary to reduce humidity in the house, reduce the loss of thermal energy, eliminate condensate.
6. Each horizontal board for crate for metal tile must necessarily be treated with anti-nipple.

A solid income under metal tile (photo below) is necessary for the roofs of a complex design in the field of internal angles.

Calculation of clamps for metal tile

It is possible to minimize the cost of purchasing lumber, if you correctly calculate the design and sizes of the crate under metal tile. To do this, first measure the size of the skates (height, length) and add front boards and issues.

The method of calculating the crate is simple. If the total area of \u200b\u200bthe roof is known - 100 m² and at the same time for the device of the crates 25 × 150 × 4000 mm boards (thickness, width, length) are used (thickness, width, length), then:

• the area of \u200b\u200bthe board will be 0.15 × 4 \u003d 0.6 m²;
• the number of boards required for installation 100 ÷ 0.6 \u003d 167 pcs.;
• volume (in cubic meters) of one board 0.15 × 0.025 × 4 \u003d 0.015 m³;
• the volume of all boards 100 × 0.015 \u003d 1.5 m³.

That is, for the device of a solid type, 1.5 m³ of boards will be required. For a rarefied crate, you need to adjust the calculations. A new component is made - a step between the boards (bars).

An example of calculation is as follows.

For example, the area of \u200b\u200bthe roof is all the same 100 m², the length of the skate is 6 m, the width is 9 m, the shaft step is 300 mm. Then:

• for one slope, the boards 6 ÷ 0.3 \u003d 20 pcs.;
• on the bottom of the skate, the handling of the board of 20 × 9 \u003d 180 m.;
• accordingly, the handling on two slots is 180 × 2 \u003d 360 m.;
• the number of boards with a length of 4 m \u003d 360 ÷ 4 \u003d 90 pcs.;
• the volume of sawn timber is 90 × 0.025 \u003d 2.25 m³.

What is the installation of the counterbalax

The counterclaim is necessary in order to ensure evaporation of condensate accumulating from the inside of the metal tile. Otherwise, the lamp and other structures of the roof can suffer from excess moisture: the spread of mold fungi will begin, rotting wood.

How to fill the crate for metal tile to avoid this? It is enough after fixing the waterproofing film to the rafter feet (this is performed using a stapler), on top of each of them to fill the bars with a cross section of 50 × 50 mm. Already on top of these bars and fasten the crate. Thus, the necessary ventilation space is formed. In addition, with the help of the counterbalax, you can align the surface of the skate.

How to make a crate for metal tile

It is necessary to follow the parameters of the structural elements for the installation of the crate. The rules are followed as follows:

• the rafters are made of timber, the dimensions of which are chosen from the row: 50 × 200, 50 × 150, 50 × 100, 100 × 200 and 100 × 150 mm;
• the thickness of the shell boards must be at least 25 mm;
• the width of the boards varies within 100 - 150 mm;
• the step between the rafters is better to choose 600 mm (in any case - no more than 900 mm): This size will facilitate the layout of the insulation;
• the first board must be 10-15 mm thicker than others;
• the shaft step depends on the parameters of the metal tile: 350 - 450 mm;
• the clamps of the crates are joined in a checker order;
• boards for additional fastening of the skate must be 25 mm thick;
• wind board is attached above the crates;
• the strength of the crate should be such that it can withstand human weight;
• it is necessary to take into account the presence of drainage and diameter of the gutter: from the size of these elements, the departure of metal tiles depends, and hence the crates;
• boards and bars should be calibrated: Such material facilitates installation work and contribute to improving quality.

Fixing the shell boards will be easier if you postpone the distance between horizontal elements from boards or bars with a specially manufactured template. Nails should be twice as long as the thickness of the boards and a diameter of no more than 3.5 mm. Each board is attached from two sides to the rafters with two nails.

Timber for crates are divided into three categories.

1. The cutting board with a cross section of 25 × 100 mm - with the help of such a material, most types of crates are constructed under the condition of light and not complex design.
2. A cutting board with a cross section 32 × 100 is used in the case of use as a roofing material, metal tiles made of thick sheet metal (0.5 mm) coated with a zinc layer. Also such a board is suitable for the construction of complex structures.
3. The timing of 50 × 50 mm is placed as a crate if the distance between the rapid legs exceeds 900 mm.

On the consequences of mounted errors

1. The lamp over the insulation should not have small gaps: this will lead to a violation of air circulation.
2. The displacement of the shell boards will complicate the docking of the sheets of roofing material or weaken their fastening.
3. The use of material from crude wood, prone to warming, will cause the wrinkle of the sheet coating of the skate.
4. Application of nails thicker 3.5 mm often leads to split boards. The optimal thickness is 3.0-3.5 mm.

The efficiency of the roof and its service life depends on the proper selection of material, calculation and installation of the crate under metal tile.

Your attention a tutorial on how attaching a mustache under metal tile: video