- 2-layer roof underlayment
- Water-repellent dispersion coating
- Composed of special polyester non-woven substrate
- Class A fire rated
Unlike asphalt shingle roofs, which are nailed tight to the underlayment, tile and slate roofs allow air and moisture vapor to flow beneath them.
Using a high-performance underlayment will allow moisture from within an unvented or highly insulated structure to diffuse outward into the ventilated space, preventing moisture accumulation.
DELTA®-FOXX is the highest vapor permeable, water-resistive underlayment on the market today. It is a 2-layer roof underlayment, specifically designed for use with tile and slate roofs.
4'11" x 164' (806sf)