WaterBlock® Window & Door Flashing

Nail On Flashing

WaterBlock® NOF is constructed from heavy weight woven Polypropylene mat, laminated between two layers of UV resistant polypropylene, blended with specialty resins to create the STRONGEST, MOST DURABLE, INORGANIC, FUNGI RESISTANT, UV RESISTANT, LOW COST flexible nail on window and door flashing available.

While most manufacturers only perform the minimum amount of ASTM tests required to meet the basic industry requirements, we wanted to be sure we not only surpassed the minimum requirements, but SET NEW STANDARDS with superior performance characteristics to provide you with the BEST LOW COST FLEXIBLE NAIL ON WINDOW AND DOOR FLASHING you can buy!

Flashing Membrane 25 mil

WaterBlock® WFM-25 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 silicon release, siliconized plastic release film on the back side. Creates the MOST VERSATILE SELF SEALING Waterproof Flashing Membrane AVAILABLE, allowing for both STICK ON or NAIL ON installations.

Flashing Membrane 40 mil

WaterBlock® WFM-40 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 silicon release, siliconized plastic release film on the back side. Creates the MOST VERSATILE SELF SEALING Waterproof Flashing Membrane AVAILABLE, allowing for both STICK ON or NAIL ON installations. 

Flashing Membrane High Temp - 40 mil

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.

Flashing Membrane Foil Face - 40 mil