Roof Deck Construction Details

These decks are often referred to as floating as they are not secured in place as a stand alone structure.

Roof deck construction details.

Deck flooring construction for rooftop decks. Roof top deck construction building a deck over a flat roof is very similar to building a deck over a concrete patio. Download free high quality cad drawings blocks and details of roof and deck insulation organized by masterformat. Special attention must be paid to railing posts and any other penetrations of the roofing surface.

The decking sits on 2x sleepers usually laid flat. This in depth section will teach diy builders to frame a deck from installing a ledger board and frost footings to framing the perimeter of the deck. For a large deck where flat sleepers are too thin to taper you can use 2x4s or 2x6s set on edge. The process of framing a deck includes creating connections between joists beams and support posts in order to build a code compliant deck structure.

2 x 4 diagonal bracing. For larger decks you can install parting boards also called pattern boards in the middle of the decking. The foundation and 4 x 4 posts. 2 x 10 beams.

Some deck builders simply frame these decks flat and leave it to me to solve the problem by sloping the base coat of my cementitious coating like a giant shower pan. 2 x 8 framing and joists. These decking boards run perpendicular to the rest of the decking creating an eye catching design. If you want the decking surface to be level the sleepers will need to be tapered to compensate for the slope in the roof deck.

The roof deck should be properly flashed with a highly durable material that is compatible with the deck material copper lead epdm etc where it adjoins the house. When a roof deck has a center drain the framing layout and sheathing installation become more complicated.