Shower Door Hinge Sleeve

thermal insulation exterior walls with polyurethane

Proper insulation of the exterior walls of buildings is one of the factors affecting more important energy demand of them. The materials

insulation commonly used in building construction highlights of rigid foam polyurethane.

This material is produced in situ in the work as a result of the combination of two liquid components at room temperature, the polyol and isocyanate . The union of the two components creates an exothermic chemical reaction following the formation of bonds between both components. The product has a cellular structure and rigid consistency. is called rigid polyurethane foam PUR or .

microscopic view closed-cell PUR

Features include:

• Low density of about 35 kg/m3 due to its lattice structure with a large amount of air inside.
• Low thermal conductivity, the order of 0,028 W / (m K).
• Waterproof.
• allows the diffusion of water vapor.

Because of these characteristics is a material used in applications that seek to reduce the flow of heat through walls, whether indoors or outdoors.

There are two modes of manufacture / application work:

• Implementation by projection, spraying the two components simultaneously on the surface that serves as sutrato.
• Implementation by injection or casting both components are mixed by churning and placed in a cavity where there is expansion.

These application techniques coupled with excellent adhesion properties on almost any substrate make your application be comfortable and fast, promoting continuity and absence of joints that could diminish their effectiveness.

material is resistant to aging due to their microscopic structure that impedes the inside of water or dirt that might degrade it.

The following video published by Atepa (Technical Association of polyurethane applied) illustrates indicated:

There are many constructive solutions for roofs, facades and interior walls that apply PUR either phase of construction and rehabilitation of buildings. In future posts

develop some of these solutions that reduce energy demand of buildings and CO2 emissions to the atmosphere.