we do OEM synthetic underlayment is manufactured in china.
Qingshan Synthetic Underlayment
is manufactured to provide best-in-class performance in terms of
both weather protection and contractor safety.
Qingshan Brand is a synthetic, scrim-reinforced,
water-resistant underlayment that can be used beneath shingle,
shake, metal or slate roofing. It has exceptional dimensional
stability compared to standard felt underlayment.
Felt underlayment can wrinkle when it becomes wet and
“telegraph” those wrinkles through to the shingles applied over it.
Qingshan eliminates this problem and its special top surface
treatment provides excellent slip resistance, even when wet
