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.

A flat roof must be strong durable and stable throughout its lifetime. 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. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. This article discusses rooftop deck construction details to avoid building leaks or rooftop deck safety hazards.

In the case of a flat roof insulation is usually in the form of either a rigid board above the deck or a fibrous quilt immediately above the ceiling depending on the type of roof construction. While many will contact a professional installation company to complete the job there are others who will feel confident enough in their own ability to install a flat roof onto the structure. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. As with the construction of any type of roofing system it s crucial to understand the correct process and essential criteria involved in flat roofing construction.

We include walk on roof surfaces roofing membrane to use below a rooftop deck and construction of rooftop deck railings and posts. It must provide adequate protection against the elements keeping the buildings structure and interior dry. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. Timber in the form of rough sawn or planed boards or planks can be used as the loadbearing deck to a flat roof.

It dealt in detail with flat roof. Rooftop decks walk on roofs. Careful detailing of membrane roofs at corners doorways and penetrations is critical for long term performance. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

Some key details for a leakproof rooftop deck are. Epdm is the best choice for most rooftop decks. Forms of flat roof construction. Flat roof design guide.

Warm cold and inverted. Flat roof construction for residential. The roof deck surface should sloped away from the house a minimum 1 8 inch per foot so the water will. They are merely placed on top of another structure.

First you must make sure the roof is strong enough to support 55 lbs per square foot. There are three recognised designs of flat roof construction. For additional stability you can also use steel joists that are built into one or both of the walls. Photo by dave holbrook.