The simplest and most reliable way to make inside corners is to fold the rubber and clamp it to the walls. However, this technique creates triangular “ears” that are subject to damage, require careful counter-flashing, and are not very attractive. We recommend folding corners on roofs with coverings that conceal and protect the folds, such as wood decks, pavers decks, or planting systems. If the corners will be visible or cannot be reliably counterflashed, cut the ears off and use molded corners.
STEP 1: Position the rubber as shown
and apply adhesive to the upper fold.
STEP 1: Strip the protective
paper from the Termination Tape
STEP 2: Lift the upper
fold onto the wall.
STEP 3: Press the rubber
into the Termination Tape.
STEP 4: Apply adhesive to the other side.
STEP 5: Lift the second side,
avoiding contact near the corner.
STEP 6: Press the second side against wall,
forming an “ear” at the corner.
STEP 7: Pinch the corner to
bond the adhesive inside.
STEP 8: Fold the ear against one
wall, completely flattening the fold
STEP 9: Caulk the top edge of the
fold with Silicone Caulk for EPDM.
STEP 10: Screw a Termination Bar
through both sides of the corner.