General information

The material to be used for interior insulation must be made of the capillary active material, calcium silicate. The material must have a neutral grey shade.

 

Calcium silicate production

The calcium silicate must be supplied in pressed boards measuring 1,000 × 610 mm with a density (EN 1602) of 220 kg/m³.

Tolerances on the length, width and thickness of the plates cannot exceed ±2.5 mm.

 

Calcium silicate

The calcium silicate must meet a number of parameters for the internal insulation:

• It must contain no quartz for the sake of the working environment
• The moisture-regulating property, water vapour diffusion (EN 12086), μ value cannot exceed 5
• Sound absorbing performance, sound reduction index Rw value for a 40mm board must be at least 30 (-1;-3) dB;
• Density, or pressure resistance, must be at least 1,300 kPa;
• Thermal performance, thermal conductivity (EN 12667), λ₅₀value, maximum 0.055 W/m²K