DeWitt’s Metal Seal High Temp POLY PRO Ice & Water Underlayment is a self-adhering, composite underlayment that is reinforced with an extra-heavy fibreglass mat.

The polyester fabric surface provides excellent traction, protection from UV radiation, weathering, and oil canning under metal.

DeWitt’s Metal Seal High Temp has cold temperature adhesion and exceptional stability under high heat. The self-adhesive layer is covered with a high-temperature split-release film, which is removed during installation.

DeWitt’s Metal Seal High Temp POLY PRO has a 3” wide peel-off top selvage edge to provide additional system sealing at the top laps.

DeWitt’s Metal Seal High Temp POLY PRO is 40 mils thick.