How to waterproof a flat roof deck.
How to waterproof roof deck.
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.
Cut the tar paper into strips then attach the strips to the deck facing edge of each joist using a staple gun.
Deck joist flashing tape.
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.
If your deck is already built you can cover the bottom of the joists with a system like timbertech s dryspace.
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.
Step 3 apply sealer.
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.
Gacodeck coatings provide an added measure of safety with slip resistant granules.
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.
There are a few things that make pvc decking different in regards to roof decks.
Ames contouring roof fabric.
Make sure it s free of all dirt and debris.
Step 2 cover the deck.
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.
Applying gacodeck adds the waterproofing layer to a roof deck.
You can see how i do that in the video above.
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.
How vinyl waterproof decking benefits roof decks.
Step 4 remove excess sealer.
Step 1 clean the deck.
Let each coat dry completely in between.