In the construction of residential manor houses, slate (asbestos cement) is used. Slate sheets are two formats: wavy and flat. Excitement asbestos -cement sheets are in greatest demand, as they are more reliable in operation and less than wood is consumed during installation.
Compared to other types of roofs, asbestos cement has a number of advantages. He is non -combustible, resistant to the differences in humidity, solar radiation and snow loads. The slate is strong enough, has high thermal insulation properties and provides good protection from wind, noise and rain. In addition, it is durable and is available in a lower price in comparison with other types of roofing.
Like other materials, slate has a number of disadvantages: over time, waterproof properties are lost, the edges of the sheets are painted and in shaded areas often such a roof is covered with lichens.
For a crate, a beam and boards are used not lower than the second grade and up to 14 centimeters long. It is recommended to arrange a crate from dry wood and use boards without knots. The crate is nailed to the rafters with a section of 60 by 60 mm or 50 by 50 mm. Each slate sheet should be based on three timber: along the edges and in the middle. The crate of the roof is made so that the slate can be laid on it with whole sheets. In extreme cases, cut sheets are laid in the penultimate row near the front -line overhang or skate.
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Asbestitis sheets laid an overlap. Depending on the styling method, even rows in relation to the odd ones are shifted by one or half of the wave. In this way, styling is performed in order to avoid fractures and the appearance of cracks. Sheets can also be laid without displacement of joints with preliminary cutting of the corners. The gaps in the places of overwhelming are treated with a solution of cement, sand and filler.
The ribs and horse ridge are covered with style parts of a semi -cylindrical shape, steel roof or with boards sewn with each other.