How To Waterproof Roof Deck

How to waterproof a flat roof deck.

How to waterproof roof deck. Step 1 clean the deck. A perimeter frame and graduated spacer nailers are fastened beneath the deck joists so that the plane of the ceiling slopes slightly at least 1 4 inch per foot away from the house toward the joist header. You can see how i do that in the video above. There are a few things that make pvc decking different in regards to roof decks.

Gacodeck coatings provide an added measure of safety with slip resistant granules. How vinyl waterproof decking benefits roof decks. 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. There are a number of icc es listed manufacturers of class a walking deck systems see class a fire resistant walking and roof deck systems sidebar.

One advantage these waterproof deck systems have over simply screwing roof panels to the bottom of the joists is that you can remove a section to gain access to the joists if necessary. Let each coat dry completely in between. Step 2 cover the deck. Deck joist flashing tape.

It also incorporates coolstep technology so you don t burn your feet and can also potentially lower your. Just as it does in its intended application as a substrate for roofing the tar paper serves as a waterproof barrier for the top of the deck s joists. Any dirt and debris will keep your waterproofing sealer from sticking to the lumber. Make sure it s free of all dirt and debris.

The coating becomes an integral part of the surface and provides the necessary protection against the elements. Step 4 remove excess sealer. Ames contouring roof fabric. Cut the tar paper into strips then attach the strips to the deck facing edge of each joist using a staple gun.

Let that dry before applying the full first coat of liquid rubber on the surface. Originally developed in the 1960s as a slip resistant flooring for small boats duradek was later introduced as a roofing material first in canada and then in the united states. First it s designed to be waterproof and walkable whereas most other flat roof materials are not. Use a paint brush along all edges and a roller to apply the deck coating to the surface and partially up the wall to waterproof those areas.

Raintight panels made of aluminum lock together to create waterproof joints.