G4E Underlayer

G4E is a 4 mm heavy duty torch-applied elastomeric bitumen underlayer with a strong woven glass reinforcement to provide an extremely high tensile strength.

Product Datasheet Declaration of Performance

Technical data

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Roll size 1 x 7.5m
Surface finish Top: Mica
Bottom: Thermofusible polyethylene
Weight 4.8Kg/m²
Thickness 4mm
Reinforcement 200g/m2 Woven glass
Tensile strength (EN 12311-1) Length ≥ 1200N/50mm
Diagonal ≥ 1200N/50mm
Elongation at break (EN 12311-1) Length ≥ 2%
Diagonal ≥ 2%
Heat stability (EN 1110) +110°C
Cold bending (EN 1109) -30°C