F30, F60 and F90 For universal application. The PARA arch roofing system in three fire resistance categories. Developed by experts with years of experience at their finger tips. The light shell has to be correspondingly classified in line with B1,Tr2 and Q1. THERMAL INSULATION With these values your PARA arch roof won´t break sweat. U-value thermal insulation: - 140mm = 0,27 W/m²k - 180mm = 0,20 W/m²k The rock wool insulation saves on heating costs. SOUND INSULATION The arched shape means that the spactial volume is used optimally. Sound insulation -values: - 140mm > Rm = 47 dB - 180mm > Rm = 50 dB Fire resistance test certificates can be requested under FAST NORMS.