How to make a roof crate

In addition to decorating the building, the roof is designed to protect the overlap of the house from various weather phenomena - snow, rain, hail, wind, excessive sunlight. In addition, the roof drains water from the walls of the house and its base, thereby prolonging the life of the structure. That is why the design and installation of the roof during the construction of the house is very important. In any design it is possible to distinguish two main parts: the enclosing (directly roof) and the carrier (for example: the truss system). One of the important elements of the truss system is lathing. It is mounted on the truss legs and provides placement of various types of roofing materials on it. Let us consider in more detail how to properly make the roof crate for some types of roofing materials.

Types of crates

Depending on the roofing materials used, the following types of battens are used:

• Solid. Bars of sheathing are mounted with a gap of no more than one centimeter. This crate is used for installation of soft tile, roll roofing, flat slate and metal tile. To improve the reliability of the roof, continuous crate is mounted on the eaves overhangs, as well as at the intersections and joints of the skates (on the ridge, valley, gutters, ribs).
• Sparse. Bars obreshetki installed in increments of several centimeters. This crate is used for the installation of natural tiles, metal roofing and wavy slate.

Waterproofing

Before making the lathing, it is necessary to provide installation with an overlap of 15 cm of a special film for waterproofing. Its installation is made on the rafters in the direction from the eaves to the ridge, while it is necessary to provide ventilation gaps between the film and the roofing material to be mounted (due to the film sagging), as well as between the film and insulation.

If the heat-insulating material is on the same level with the rafters, then to increase the height, installation of additional bars with a section of 30x50mm will be required on the rafters.

Crate under roll roofing materials

For this type of roofing material, a continuous lathing of boards or bars of at least 25mm thickness is used. At the same time between them are not allowed gap. The width of the wooden boards used must be less than 15 cm, otherwise due to their warping during operation the roofing material may be damaged. In addition, the surface of the sheathing should be flat, without protruding nail heads.

Crate under soft roof

The popularity of soft roofing is caused by the relatively low price for it and ease of installation. For laying soft roof requires continuous obreshetka. It can be made in two layers of a special calibrated board, it is important that all the joints are smooth at the same time. Excellent results are obtained with the use of a rabbeted board or roofing plywood, additionally treated with an antiseptic. In order not to damage the soft roofing material, the ends of the end boards should be rounded.

Crate under the tiles

Одним из лучших и долговечных материалов для обустройства кровли является черепица. Crate under the tiles может быть выполнена одним слоем, при этом на стропила набивают бруски сечением шесть и более сантиметров, на которые укладывается черепица. Выбор шага обрешетки производится в соответствии с размером монтируемой черепицы. При необходимости можно выполнить двойную обрешетку из такого же бруска. Для обеспечения равномерного прилегания черепицы необходимо добиться максимальной ровности обрешетки (используемые бруски должны быть одного размера и ровные).

So in reality, the crate under the tile looks like:

Crate under slate

This type of crates can be made of one or two layers of bars. In the manufacture of single-layer obreshetki bars with a section of 5x5cm mounted parallel to the ridge with a step of 0.5 m. If instead of the usual wavy slate using a unified profile, the step is performed at 0.8 m, and the cross section of the bars is 7.5x7.5 cm. It is important that each sheet of slate is based on three beams. At the same time, due to the greater load, the eaves must be much thicker. Near the ridge and the overhangs it is necessary to mount solid flooring.

To evenly distribute the load, as well as a dense arrangement of sheets, even bars should be thicker than odd by 30 mm.

Processing of wooden elements of the roof

To increase the durability of the roof, all wooden elements of the roof should be treated with special antiseptics and fire-fighting compounds. Processing should be done with a paint brush, applying two layers alternately. The quality of fire treatment of the purchased material is verified quite simply. To do this, you need to split a small chip from it and try to set it on fire. Well-treated material will burn only in the presence of an external fire, if you remove it, the chip will immediately go out.

Properly designed and manufactured roof will decorate your home and provide protection from all the vagaries of nature for a long time.

Video

This is how the installation of the roof lathing looks like: