I have a customer who installed a new asphalt shingle roof just prior to us placing the gunite in his new pool. There is some light overspray that wafted up and settled on the shingles a couple of areas. Problem is.... the roofer is threatening to void the 30yr warranty if we use any cleaning products on it. Replacing the affected area will be expensive. Any solutions? (no pun intended).
Mike P
Palace Pools