Petroleum is the raw material of polystyrene based materials and petroleum based products decompose in nature in minimum 1000 years. The product will not be decomposed or melt itself. Europe and several countries around the world prefer successful applications of heat insulation system for over 30 years on millions of m2 area.
Certain amount of water vapor accumulates in building every day (due to breathing, cooking, taking a bath, doing laundry etc.). The water vapor accumulation is released from the exterior walls through diffusion. If the boards used for insulation have low levels of water vapor permeability, the amount of water vapor discharged naturally will be reduced and there will be increased risk of bleeding and condensation between the layers of façade. Bleeding and condensation cause humidity and mold as well as impairing resistance and performance of the system.
Boards absorb only 1 % water, by volume, even when they are fully submerged into water and soaked for one week. Since the walls shall not be exposed to such water intake, it is practically not possible for boards to absorb water if we bear in mind the water in the walls will run down due to gravitational force.
Topcoat facing is applied for decorative purposes and for reinforcing the system. Thus, we suggest applying decorative plasterwork or rough paint. However, if you want to directly apply paint rather than applying facing, then heat insulation plasterwork should be 6 mm instead of 4 mm and the surface should be smoothed out with sponging method.
Exterior walls are not exposed to any mechanic force after the first 3 meters, excluding wind load. 2-layered mesh plasterwork might be preferred for achieving higher levels of impact resistance with Heat Insulation Plasterwork that protects the system within the first 2 to 3 meters which endure human factor as well as being prone to impact.
The boards can be produced in 50 x 100 cm size and in any thickness of your choice. The most common thickness range is between 3 to 8 centimeters.
Please see the last page for quality certificates of all products used for this application.