RUBBERALL® Membrane To Shingle Transition
When installing an EPDM membrane system with a tie-in to an existing shingle roof, remove a minimum of three (3) courses of shingles.
Adhere the membrane onto the sloped roof deck. Peel the top of the EPDM membrane back and apply a bead of Water Cut-Off Mastic between the membrane and the deck. Nail the top of the membrane every six inches (6") and install the shingles over the EPDM membrane.
Keep the bottom course of shingles a minimum of four inches (4") above the roof angle change. To adhere the bottom course of loose shingle tabs to the membrane, lift each tab and apply a one-inch (1") long bead of Lap Caulk.