I did one like that before flat roof with epdm.
Flat roof deck sleepers.
There are proprietary pedestal systems that provide a very stable level and serviceable deck over a roof membrane though they are relatively expensive compared to conventional methods.
This is the standard gapping for duralife products air should be allowed free movement under the structure do not.
The sleepers were not fastened to the roof and floated.
1 4 6 4 mm minimum gap where the decking meets a solid wall maximum of 3 8 9 5 mm recommended 3 16 4 8 mm gap between boards.
In this video we show you the installation of trex decking over a flat roof using the tiger claw hidden fastener system.
Stains on sheet rock ceilings popping hardwood flooring wet carpets and rotted framing are just some of the damages that you may sustain as a result of these leaks.
A sleeper deck is simply a deck that is not attached to anything.
You can do a floating deck and is really your only option.
Flat roofs with easy access are great for creating an outdoor living space.
The deck was trapped in place by the metal railing that penetrated the roof and skirting around the edge.
Many homes in new england have walk on flat roof decks with living space under them and 90 percent of these deck roofs leak ruining your rooms.
Deck must be designed to ensure that proper drainage and air flow are maintained.
We glued strips of epdm to the bottoms of the sleepers made from trex and used a tongue and groove pvc 2 1 4 porch decking.
This will provide the surface for you to attach the decking.
However i would highly recommend that you consider a that the epdm is lying flat on the roof subfloor without any sharp objects that can puncture the edpm once sleepers are laid over top and placed under load.
The best way is to construct a sleeper deck.
So your deck has a drain in the middle with four planes sloping to it that is a bit of a head scratcher.
The last thing you want to do is stop that water from flowing off the roof deck so your sleepers must run parallel to the slope of your roof which will mean setting the sleepers in a radial pattern like spokes on a wheel.
You can use 2x material laid flat or 4x material also as sleepers.
Roof top deck with sleeper system install guide.