Flat Roof Deck Construction Details

Forms of flat roof construction.

Flat roof deck construction details.

Timber in the form of rough sawn or planed boards or planks can be used as the loadbearing deck to a flat roof. It must provide adequate protection against the elements keeping the buildings structure and interior dry. For additional stability you can also use steel joists that are built into one or both of the walls. The roof deck surface should sloped away from the house a minimum 1 8 inch per foot so the water will.

Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. Flat roof construction for residential. There are three recognised designs of flat roof construction. Flat roof types.

Some key details for a leakproof rooftop deck are. 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. 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. This article discusses rooftop deck construction details to avoid building leaks or rooftop deck safety hazards.

Warm cold and inverted. 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. They are merely placed on top of another structure. These decks are often referred to as floating as they are not secured in place as a stand alone structure.

A flat roof must be strong durable and stable throughout its lifetime. Careful detailing of membrane roofs at corners doorways and penetrations is critical for long term performance. It dealt in detail with flat roof. We include walk on roof surfaces roofing membrane to use below a rooftop deck and construction of rooftop deck railings and posts.

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. Photo by dave holbrook. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

Building a deck over a flat roof is very similar to building a deck over a concrete patio. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. First you must make sure the roof is strong enough to support 55 lbs per square foot.