Advantage-30 Synthetic Roofing 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.

Advantage-30 is designed to be used over a roof deck as a water-resistant roofing underlayment beneath asphalt roofing shingles, wood shingles and shakes, metal shingles and metal panels, concrete tiles or slate.

Excellent Slip Resistance

Non woven spun bonded synthetic Anti-Slip facer provides excellent slip resistance dry or wet.

Superior Strength

UV stabilized woven scrim core bonded to the non woven Anti-Slip facer with a UV stable Anti-slip coating. Provides additional slip resistance, superior strength, and dimensional stability.

The “Tacky Back Coating “

Bottom side of the woven core is coated with a UV stabilized High COF coating. (COF = Coefficient of Friction) which we call “Tacky Back Coating”. The “Tacky Back Coating “helps prevent material movement by gripping the substrate when pressure is applied from the top side. This feature increases safety and decreases fabric tension at fastener locations. 

Lay Flat Technology

Multi layer composition eliminates warping and wrinkling, providing a Lay Flat- NON Telegraphing underlayment.
( felt underlayment’s can warp and wrinkle if exposed to moisture, telegraphing the wrinkles to the asphalt shingles)

Reduces Reflectivity and Glare

“Cool Tan” color creates a product that reduces reflectivity and glare, plus keeps the “on the roof working” temperatures cooler on sunny dry-in days, yet attracts and absorbs sunlight on cold days to help reduce frost.

UV Stabilized

UV stabilized components create a product that will perform exposed for up to 6 months.

30 Year Limited Warranty

See limited Warranty for details.

Advantage-30 Conforms to

Physical requirements ASTM D226 and D4869, CAN/CSA A123.3 Classification for use beneath UL 790Class A/ASTM E108, Class A fire rated asphalt shingles.