Metal tile is by far one of the most versatile roofing materials. It is made in the form of sheets of galvanized steel: the raw materials undergo a special treatment to obtain the effect of imitation of natural tiles, and the surface is also treated with a polymer coating of different colors. This type of roofing material has good technical characteristics, such as light weight sheets, strength and durability, ease and speed of installation. Consider the question of how to cover the roof with metal tiles, in detail.
Preparatory work
Before installation, it is necessary to carry out preparatory work, which consists of laying waterproofing and assembling the lathing of the roofing system, as well as calculating the required amount of material.
Waterproofing works
On metal roofing, as a rule, moisture condenses on the inside, which eventually leads to undesirableconsequences, such as corrosion, rotting of roof rafters, etc. For this, work is carried out on waterproofing and laying internal ventilation. In the question of how to cover the roof with metal tiles, this stage occupies an important place. Below is information that will be helpful:
- Waterproofing is laid with an overlap, starting from the eaves upwards, while leaving a gap of more than 50 mm under the ridge to create air channels.
- A carpet of waterproofing materials is laid on logs or rafters, and it must be reinforced with a batten system.
- Ventilation holes should be provided at the highest point of the roof.
- In attics without heating, natural ventilation is created - end windows, if necessary, means are built in for forced air circulation.
Assembly of the batten system
To most fully reveal the question of how to cover the roof, consider the main points of assembling the batten system. To perform the crate, it is necessary to use durable boards, having previously treated them with an antiseptic. The recommended size is 30×100 mm. The installation of the bars is carried out with a certain step, the value of which is indicated in the instructions supplied with the kit. This interval corresponds to the wave step on the sheets.
The laying of the beams starts from the bottom edge, while the very first bar should be 1-1.5 cm thicker than the other elements of the crate. The boards are fixed across the rafters with self-tapping screws. End Plan Plankthey are placed above the crate system to the height of the wave crest, attached to the rafter beams with galvanized steel nails. For a solid installation of the ridge bar, additional bars are provided. The cornice strip must be fixed before the tiles are installed. The crate in the valley, around chimneys and skylights must be laid in a continuous layer.
Calculation of the amount of raw materials
In order to understand how to cover the roof with metal tiles, you need to take into account that the calculation of the number of sheets of material is carried out for each slope separately, and consists of the following steps:
1. It is necessary to check the symmetry of the slopes by measuring them diagonally - these values \u200b\u200bshould be equal.
2. Then calculate the number of rows along the roof slope. To do this, you need to measure the length of the roof slope from the valley to the eaves. This value must be divided by a useful width indicator, which is determined by subtracting the overlap value from the actual width of the metal tile sheet. The result obtained must be rounded up to whole numbers in the direction of a larger value. As a rule, tiles are produced with a width in the range of 1.17-1.2 m, while the working value will be the same - 1.1 m, and the rest is used in overlapping laying. For example, for a ramp 7 m long, the calculation will be as follows: 7 m ÷ 1, 1 m=6, 36 ≈ 7 rows.
3. Next, the number of sheets in a row is calculated, for this the total length of the sheets is determined by adding the length of the slope, the descent of the eaves and the value of the overlap. AtIn this case, it is taken into account that the tiles are produced with a maximum length of 8 m, and if the total length of the roof slope with the descent does not exceed this value, then the overlap value is 0. However, the transportation and installation of large-sized material is difficult, and such sheets also require trimming. And if the wave drop on the tile coincides with the cut line, then this can lead to undesirable consequences, such as deformation or difficulty in assembly. To avoid such situations, it is necessary to choose the optimal length of the sheets. For example, with a slope length of 6 m and an overhang length of 0.5 m, two sheets of 4 m long can be laid, with an overlap of 0.25 m.
4. The total number of tile sheets is determined by the number of rows and the number of sheets per row: 7 rows × 2 sheets=14 sheets per slope.
Required tools
Also in the question of how to cover the roof with metal tiles, information about the tools used will not be superfluous. During installation work, it is necessary to adjust the roofing material. The following tools may be needed:
- Special tool for cutting metal tiles.
- Hammer.
- Screwdriver.
- Ruler.
- Marker.
As a special tool for cutting sheets, it is recommended to use an electric jigsaw, a metal saw with teeth from Pobedit, scissors and other devices. It is important to remember that the use of cutting tools with abrasive wheels, such as grinder saws, is excluded. This isthis is because the resulting high temperature can destroy both the polymer coating and the galvanization, which will lead to corrosion and destruction at the molecular level.
Installation of metal roofing
After the preparatory work, they begin to assemble the material. In this case, you need to take into account important points:
- Sheets of metal tiles are not symmetrical, they also have top and bottom, so the material consumption increases during laying.
- The roof with two slopes is covered, starting from the front side, and the hip-type roof on both sides from the highest points.
- The overlap along the length of the sheets is provided equal to 250 mm.
- At the edge of the eaves make a plumb line 40 mm long.
- Metal tiles are fixed with self-tapping screws into the depth of the wave, 8 pieces of connecting elements are needed for each meter of coverage.
Roofing with metal tiles is very economical, as installation work with tiles is not so difficult. To date, in the building raw materials market, you can find various roofing materials, the prices of which are presented in a wide range. It can be noted that the metal tile is the most inexpensive and suitable material for most building options. The right choice and good installation will help keep your home safe from any kind of weather.
