Epdm is available in widths up to about 50 so you can generally lay down a continuous sheet without any seams.
How to build a waterproof roof deck.
This is used to provide a durable long lasting waterproof membrane on top of your existing deck.
Step 1 clean the deck.
Any dirt and debris will keep your waterproofing sealer from sticking to the lumber.
Cover furniture or items on your flat roof deck that are not meant to be waterproofed with the drop cloth.
Raintight panels made of aluminum lock together to create waterproof joints.
That s unfortunate because building a reliable long lasting waterproof deck over living space is relatively straightforward when the best practices and materials are used.
For example recently a simple 3 800 deck repair turned into a 120 000 project thanks to dry rot damage to the framing shear walls and decks.
The roof deck surface should sloped away from the house a minimum 1 8 inch per foot so the water will drain and not pond the finished walking surface of the roof deck surface should be below the level of the interior floor by at least 1 1 2.
Once the primer dries apply the geo textile on all edges and seams on the plywood deck roof or balcony.
Make sure it s free of all dirt and debris.
Clean off the dust then apply the primer to the entire surface with a large paint brush.
Step 2 cover the deck.
The costs can be astronomical.
Use the liquid rubber deck coating under the textile to stick it to all seams.
The roof deck should be properly flashed with a.