Modern inhabitants are not aware of some building materials. For example, it is not at all surprising that for most citizens the word “bitumen” is associated exclusively with the laying of roads. In fact, a special composition is used for them, which is based on oil derivatives. While bituminous materials have a much wider scope, it is worth considering a variety such as cold bituminous mastic for roofing. This question can be called very relevant, because sooner or later in the repair of a soft roof there is an urgent need.
Bituminous mastic: characteristics
Bituminous mastic for roofing is a strong and durable material that quickly hardens without additional heating. This is one of the best tools that can act as a highly effective waterproofing coating. In addition, she can show her amazing qualities on wet surfaces. Bituminous mastic for the roof attaches very high quality to the base layer. It is able to provide protection against weak acids, water, as well as various adverse weather conditions at any time of the year.
Bituminous mastic: application
This material is used in a fairly wide range of works. The main areas that can be mentioned are such functions: gluing to the basics of different types of roofing; bonding layers of roofing cardboard in hydrophobic insulation; the formation of monolithic waterproofing coatings. In order for the repair to be of the highest quality, you should adhere to certain instructions.
Bituminous mastic: rules of use
First you need to prepare the surface. It should not have frost or dust. The surface is important to free from stagnant water. All metal elements must be free from rust and dirt. Cracks and various rough surfaces should be treated with cement mortar. Absorbing and unprotected surfaces should be treated with special materials. Bituminous mastic for roofing should be used cold. It is necessary to apply the material with a spatula or roofing brush. The next layer is applied only if the previous one is completely dry. After that, it will be possible to stick parts of the roofing material to the base or one to the other. The glue should be completely evenly distributed on the surface of the roofing material. After some time, usually 20 minutes, you can press the material as tightly as possible to the mastic.
In the event that the primer has dried, you can apply 2-3 layers of mastic, while the consumption per layer is 1.5 kilograms per square meter. Each new layer is applied across the previous one - this is a prerequisite. This is the only way to completely eliminate isolation gaps. Bituminous mastic for the roof, the price of which is from 200 rubles per kilogram, can be spent in the amount of 3-4.5 kg per square meter. It is important to constantly check the thickness of the layers, as well as to monitor how the building material is consumed.