How To Make A Waterproof Roof Deck. Interior DrainDeck slopes to an interior located drain. A ladder is needed to reach the roof.
Starting at one end attach the first fiberglass panel to the purlin with the roofing screws. This is used to provide a durable long-lasting waterproof membrane on top of your existing deck. To waterproof a roof with tar shingle check for ripped or warped shingles that might be allowing water to seep through.
Interior DrainDeck slopes to an interior located drain.
Any dirt and debris will keep your waterproofing sealer from sticking to the lumber. RainTight RainTight panels made of aluminum lock together to create waterproof joints. Steps to Apply Liquid Rubber Deck Coating. Cover furniture or items on your flat roof deck that are not meant to be waterproofed with the drop cloth.