Its durable high strength design. This product can be left exposed for up to 120 days. Modified asphalt reinforced with an extra heavy fiberglass mat. Uniformly seals to the deck and. Webapply gatorseal underlayment to the roof, starting at the eave. The first course of gatorseal underlayment should be parallel and flush to the edge of the eave.
Gator Seal Underlayment
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