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Advantage-30 Synthetic Roof Underlayment

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WaterBlock Advantage-30 is designed and manufactured to provide a superior roofing underlayment compared to both asphalt felt products and other synthetic underlayments.

Installation Guides

The WaterBlock Installation Guides will guide you step by step how to install your Window & Door flashing.

Flashing Membrane High Temp - 40 mil

Tech Data | MSDS
WaterBlock® WFM-HT is composed of premium grade SBS modified bitumen laminated between a super strong, yet very flexible, UV resistant woven polyethylene complex on the face side, and a siliconized release paper on the back side. Intended to be used as a roofing underlayment and/or as a Thru-Wall Flashing membrane in masonry or other cavity wall construction.