Certified by SINTEF for enhanced quality assurance and by the French CSTB in class R1, it consists of a microporous film and polypropylene protective layers. TRASPIR 110 can be applied to both the external and internal sides of walls and roofs. It is also available in a 3-metre version for even faster installation times. TRASPIR 110, the highly breathable, strong and lightweight membrane for roof and wall installation