How To Waterproof A Flat Roof Deck
Building waterproof roof decks.
How to waterproof a flat roof deck. Step 1 clean the deck. Some deck builders simply frame these decks flat and leave it to me to solve the problem by sloping the base coat of my cementitious coating like a giant shower pan. Although it s a waterproof roofing material it has an extra quality. But this potentially adds a significant load to the deck since the average 1 4 inch thick coating weighs about 2 1 2 pounds per square foot.
Any dirt and debris will keep your waterproofing sealer from sticking to the lumber. Step 4 remove excess sealer. That means that not only does it act as a roof for the underlying structure it also acts as a deck membrane. Step 2 cover the deck.
Roof decks are typically constructed so that a layer of waterproofing material is sandwiched between the roof substrate and a floating deck on top. A roof deck supports the roof elements but does not provide complete protection. How to waterproof a flat roof deck. Make sure it s free of all dirt and debris.
Gacodeck coatings provide an added measure of safety with slip resistant granules. Step 3 apply sealer. One of the best choices for flat roof decks is pvc roofing material which is proven to be completely watertight durable and long lasting.