Nova-Seal®II is a premium roofing underlayment that delivers exceptional long term weather barrier performance compared to both traditional asphalt felt products and other synthetic underlayments.

Nova-Seal®II is a 100% synthetic underlayment with slip-resistant coatings on both sides. The bottom is designed to reduce slippage between the underlayment and the roof sheathing. The textured top side contains a rubberized polyolefin coating offering unsurpassed slip resistance. This unique, patent pending, feature provides a more secure and safer work surface.

The Nova-Seal II Advantage
Nova-Seal II can be left exposed for up to (12) months and comes in two versions, a light beige color which stays cool in hot climates and a dark green color which absorbs sunlight on cold days and helps reduce frost in northern regions.

Nova-Seal II is ideal under, asphalt singles, cedar shakes & shingles, concrete and clay tiles, metal slate, stone-coated metal, and synthetics. It is compatible with plywood, oriented strand board (OSB) and any nailable substrate.

• Nova-Seal II Sustainable Solution
  Nova-Seal II does not support modl growth, rot or dry out as it contains no organic material and will not absorb moisture.
• Nova-Seal II is 100% recyclable
• It is far stronger and lighter than #30 felt and has much greater coverage per roll.
• Nova-Seal II requires fewer nails than conventional felt underlayments.

The Nova-Seal II System Benefits

Exceptional Barrier Performance: Woven Synthetic Rubber Barrier engineered with 100% synthetic polypropylene weave and modified polyolefin coatings.

Endurance: The underlayment withstands prolonged exposures in all climates.

High Temperature Resistance: Withstands surface temperatures up to 250f (120 C). Won't flow or leach out at high temperatures lik some asphalt felts.
 
Fire Resistance: Meets Class A under ASTM E1098/UL790.

One Year Exposure Period: Nova-Seal II can remain exposed for up to one (1) year.