DS1 DUO Vapour Control Layer

DS1 DUO is a 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.

Technical Data

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Roll size 1.08 x 7.5m
Surface finish Top: Foil & mica
Bottom: Release film over self-adhesive bitumen
Weight 4.5Kg/m²
Thickness 4mm
Reinforcement Polyester coated aluminium foil & 60g/m2 glass fleece 
Tensile strength (EN 12311-1) Length ≥ 400N/50mm
Diagonal ≥ 400N/50mm
Elongation (EN 12311-1) Length ≥ 2%
Diagonal ≥ 2%
Heat stability (EN 1110) +70°C
Cold bending (EN 1109) -25°C