DS1 DUO Vapour Control Layer

3.5 mm technically advanced self-adhesive elastomeric bitumen vapour barrier with patented “DUO” lap technology. The product features thermally activated bitumen stripes to provide the bonding compound for the insulation boards.

DS1 DUO bitumen vapour barrier membrane

Technical Data
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Roll size (m) 1.08 x 7.5
Weight (Kg/m²) 4.5
Thickness (mm) 3.5
Surface finish Top: Foil & mica
Bottom: Release film
Reinforcement 60g/m2 glassfibre & polyester coated aluminium
Tensile strength (EN 12311-1) Length ≥ 400N/50mm
Diagonal ≥ 300N/50mm
Elongation (EN 12311-1) Length ≥ 2%
Diagonal ≥ 2%
Heat stability °C (EN 1110) +70
Cold bending  °C (EN 1109) -25