The BITALBIT ALV REFLEX bitumen waterproofing membrane is made of elastomeric bitumen. It is protected by a fusible polymer film on the bottom and by a layer of schist aggregate on top. Installation using the welding method. The width of the overlaps should be 10 cm. It is designed to be used as a vapour barrier in flat roof systems where the vapour barrier is left open and exposed to UV rays for a long period of time. The product complies with SIST EN 13970, 13969 (Type A) and SIST 1031.
- reinforcement: Al + glass fabric
- flexibility at: – 15° C
- flow resistance: 100° C
- breaking force longitudinal / transverse: >300 N / >200 N
- elongation at break: >2 %
- vapour barrier Sd value: ≥ 1500 m