When building buildings, regardless of the typeroofing and roof structures, some types of work are standard. This is the implementation of the truss system, the installation of the batten, the laying of the “cake”, which includes several layers, such as insulation, waterproofing and others. It should be noted that for the quality of the work necessary to choose the right materials. So, for insulation, roofing mastic is often used, which is available in various forms. Consider the use and variations of this material.
Types of waterproofing material
Кровельная мастика представляет собой вяжущее a substance made of organic compounds with a filler, which can be used as substances such as asbestos, mineral wool, slag, quartz, talc and others. These additives improve the technical characteristics of the material (increase strength, resistance to thermal effects, reduce brittleness in frost, etc.). In addition, antiseptics and herbicides are added to mastics to prevent the appearance of fungal growths, lichen and other implants.
Depending on the type of organic matter, the following types of mastics are distinguished:
- bituminous;
- tarry;
- combined (rubber-bitumen, bitumen-polymer and others);
- polyurethane.
Also, this material can be divided according to the type of use into the following types:
- Mastic roofing hot - this type of binderRaw materials are used in a heated form for fixing roofing felt, toe material and other coatings. In addition, they are used as a protective layer for roof structures. As a rule, this type of roofing waterproofing has the designation MBK-G - **, where the figures * on the site indicate heat resistance. Depending on the region of the terrain and the slope of the roof, mastic is applied with a certain heat resistance. For example, for northern latitudes for a construction with a slope of less than 2.5%, the use of MBK-G-55 is recommended.
- Mastic cold - this raw material is used for the purposesealing when processing places of junction of coating sheets, when laying roll material for roofing and repair work. When using this type of mastic is diluted with solvents (white spirit), gasoline, solvent and others.
Use of material for roof waterproofing
Conditions and methods of using this material may be different, but you can select some points that are the same for all types of mastics:
- Cold roofing mastic can be applied with a spatula, and when using a brush or when applied by a pouring method, it should be diluted, and the permissible level should not exceed 30% of solvent.
- Liquid mastic should be applied on a flat clean surface, on which you must first apply the ground coat of the bitumen primer.
- При выполнении работ необходимо соблюдать caution, as the substances that contain roofing mastic, toxic. Therefore, in order to protect yourself from poisoning, it is recommended to wear safety glasses, a respirator (when applying hot mastic), gloves and special clothes.
- Mastic bituminous roofing hot preparesas a rule, on special equipment at the factory. Independent preparation is also possible, but it is necessary to prepare the container around which the brick facing is installed. Also, the tank cap should close tightly. The heating temperature is about 180 ° C, while the solution must be constantly stirred, excess impurities must be removed (for these purposes, you can use a metal sieve or other similar device). Hot mastic should be prepared 2-3 hours before the work.
Roofing mastic provides durabletight connection of coatings, and the waterproofing layer is smooth, strong and quite durable. The use of this material helps prevent the occurrence of fungal formations and corrosive damage, which improves the quality of work performed.
