Roof Top Deck Construction Decks.com
2017-9-3 & 0183; Next, you will need to install a watertight EPMD rubber membrane over the top of the roof deck for protection against water infiltration in place of roofing materials. Then, you will install “sleepers” or flat 2x6s laid flat every 16” on top of the roof surface. This will provide the surface for you to attach the decking.