INSTALLING A WALL DRAIN
STEP 1 Offer the wall drain into the pre-cut hole in your parapet wall and mark around using a white pencil or scribe STEP 2 Remove the wall drain and apply a thin bead of lap edge sealant behind the drain. Once the sealant is fully applied push the drain back into position to bed into the sealant STEP 3 Fix drain into position using either countersunk screws or clout nails. STEP 4 Mark 70 mm either side of the drain using a white pencil or scribe. STEP...