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StormStopper FSU by MFM Building Products

March 3, 2026 at 9:27 a.m.

StormStopper FSU (Film Surface Underlayment) is a 45-mil, self-adhering underlayment and waterproofing membrane composed of a polymer film with an embedded traction surface. The film is laminated to a specialized rubberized asphalt adhesive that adheres in temperatures of 40°F or higher.

StormStopper FSU installs under roofing at edges, eaves, valleys, skylights and chimneys to protect from leaks due to ice dams, melting snow and wind-driven rain. It is suitable for new construction and reroofing and adheres to most clean, dry substrates. StormStopper FSU comes in a 36" wide x 66.7' long roll (200 sq ft). Packaged one roll per carton. 5-Year warranty.

Learn more about StormStopper FSU.

UP TO THE MINUTE

ARCA Expo puts relationships at the center

The Arizona Roofing Contractors Association’s annual Expo helps roofers build ...

Building long-term roofing relationships

By Jesse Sanchez. How a responsive repair and maintenance department ...

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