October 25, 2022 at 3:00 p.m.

By Cass Jacoby.  

Wind & Water Seal™ is engineered specifically to prevent damage from wind-driven rain, ice damming and moisture penetration. 

MFM Building Products’ Wind & Water Seal™ is a 40-mil underlayment that is composed of a non-slip, cool white/gray polymer film laminated to a high-temperature rubberized asphalt adhesive that prevents damage from wind-driven rain. This underlayment is ideal for secondary water resistance and can be used as a flashing membrane around exterior penetrations like vents and chimneys. 

Designed to be used under any and all roofing materials, MFM Wind & Water Seal™ aggressively adheres to most dry substrates and self-seals around fasteners including nails, staples and screws. The high elongation and flexible nature of the underlayment accommodates expansion and contraction of the building structure. 

Expect an easy installation with Wind & Water Seal™, as the non-slip surface includes overlap guide lines and a split release film for use in valley applications. The underlayment can be left exposed for up to 60 days, comes with a 10-year warranty, and is manufactured in the USA. 

Learn more about MFM Building Products in their RoofersCoffeeShop® Directory or visit mfmbp.com. 

About MFM Building Products  

MFM Building Products, founded in 1961, is a manufacture of self-adhering waterproofing membranes for the residential and commercial roofing marketplace. Their product line includes low-slope roofing membranes, steep-slope roofing underlayments, window and door flashing tapes, above and below grade waterproofing membranes, roof flashing products, and specialty tapes. Roofing contractors depend on MFM’s experience and quality products to bring value to each and every project. Whether it is new construction, re-roofing or roof repair, our membranes provide complete waterproofing protection. 

About Cass 

Cass works as a reporter/writer for RoofersCoffeeShop, AskARoofer and MetalCoffeeShop. When she isn’t writing about roofs, she is putting her Master degree to work writing about movies and dancing with her plants.





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