China Mosaic Style Fiberglass Reinforced Asphalt Shingles, Find details about China Asphalt Shingle for Roofing Waterproofing, Mosaic Style Asphalt Shingle from Mosaic Style Fiberglass Reinforced Asphalt Shingles
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Underlayment: At standard slopes (4" per foot or greater) a shingle underlayment is needed. Yosaite
Waterproof breathable membrane (WBM110). On low slopes (2" to 4" per foot), PE waterproof membrane
(OM400) and Self-adhesive bitumen membrane (BMS030A) are recommended to use.