Rolled roofing materials. Advantages, disadvantages, main types

Roll roofing materials are widely used in the roof installation . Roof of them is one of the most inexpensive and simple in technology manufacturing. Despite the relative cheapness, with all technologies, a four-layer coating of roofing material will serve as much as a metal roof made of galvanized steel. However, the roof of roofing felt has one significant drawback - it is easily ignited.

Soft roofing materials Stacked in several layers, each of which carries a specific function. The lower layer is unprotected materials (lining), and the top layer is coverslips. The main feature of the cover material is the presence of a layer containing a powder (pulverized, fine-grained or coarse-grained) and refractory bitumen.

The most commonly used roll roofing materials are pergamin, roofing felt and roofing felt. They are very simple to fit. They are used on roofs with a slight slope on a solid foundation.

One of the main properties of soft roofing materials is water resistance. This property is retained only with the complete integrity of the material, that is, in the absence of ruptures and cracks.

To make the roof quality and durable, roll roofing materials Must comply with the following parameters:

• Strength at break (the material breaks into strips of 5 cm, and the more effort is applied, the stronger the material);
• Resistance of the material to heat;
• The flexibility of the material is evaluated at the lowest temperature at which cracks do not appear when the rod is bent.

Roofing materials. Kinds

Depending on the substrate, roll roofing materials There are the following types:

• On the design of the canvas - basic and basic;
• By type of component of the coating composition - polymer, bitumen, bitumen-polymer;
• By type of basis - cardboard, asbestos, fiberglass, polymeric and combined;
• By the structure of the protective layer - with foil or film, with flake, pulverulent, coarse-grained, fine-grained.

Also, depending on the binding components, they are polymer-bitumen or bitumen.

Bituminous roofing materials have a low price and a lower quality, in comparison with polymer-bituminous. The disadvantage is the low level of frost resistance. However, this material is often used for internal waterproofing of the structure, thanks to moisture resistance.

Polymer-bitumen roofing roll materials have much more advantages than the previous ones. However, their price is higher. They have a high degree of strength and reliability, are resistant to very low and high temperatures. These qualities are decisive in choosing roofing materials for the harsh climatic conditions of our country. These materials can last about 25 years with the observance of manufacturing technology and roofing.

With a sufficient assortment of soft roofing materials, bitumen-polymer rolls are a new modern word in roofing. However, when choosing, you should prioritize yourself and decide what is more important for you: price or quality?