Flat Roof Deck Construction Details

Building a deck over a flat roof is very similar to building a deck over a concrete patio.

Flat roof deck construction details. 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. Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls. Special attention must be paid to railing posts and any other penetrations of the roofing surface. This article discusses rooftop deck construction details to avoid building leaks or rooftop deck safety hazards.

Consider geography budget and use for the roof to determine the best option. A note to consider before construction. Trada and approved document part a give guidance on sizes of joists for flat roofs relating to spans and loading. The construction of the flat roof is similar to that of the timber upper floor.

We include walk on roof surfaces roofing membrane to use below a rooftop deck and construction of rooftop deck railings and posts. They are merely placed on top of another structure. Construction studies drawing detail showing how to draw a flat roof warm deck construction detail to a scale of 1 10 with a short introduction highlighting t. Proper drainage at the edge of the deck must be provided usually with gutters.

If insulation is installed below the flat roof deck this is called a cold roof.