GAP 30 Split felt is a 18” underlayment product that is manufactured from superior quality organic felt that is saturated with asphalt .
GAP 30 18” Split underlayment is applied over the roofing deck before installation of Wood shake shingles.
ASTM D 4869 Type 1
- Width of Roll= 18”
- Roof coverage per Roll= 108 Square feet
- Mass of Saturated felt roll = 13.0 lbs/100 sq ft
- Mass of Saturant = 6.0 lbs/100 sq ft
- Pallet Size 42” X 42”
- No. of Rolls per Pallet = 60
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