Flat Roof Deck Construction Details

Flat roof construction for residential.

Flat roof deck construction details.

We include walk on roof surfaces roofing membrane to use below a rooftop deck and construction of rooftop deck railings and posts. Epdm is the best choice for most rooftop decks. Some key details for a leakproof rooftop deck are. Others would treat even steeper pitches as flat roofs.

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. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. Building a deck over a flat roof is very similar to building a deck over a concrete patio.

Rooftop decks walk on roofs. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. This is placed over the. Depending on the type of roof you are considering here s some technical details you may find useful.

The roof deck surface should sloped away from the house a minimum 1 8 inch per foot so the water will. That will help you remember certain factors and details to build the best possible flat roof. A note to consider before construction. This article discusses rooftop deck construction details to avoid building leaks or rooftop deck safety hazards.

Insulation for the warm flat roof only the basic construction process. Photo by dave holbrook. Generally roofers discourage this method for cold climates because it can promote condensation and requires ventilating the roof which may be difficult to do in small or tight spaces. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal.

The definition of a flat roof according to bs 6229 is having a pitch less than 10 o to the horizontal however some in the industry would consider up to 15 o as their definition of a flat roof. If insulation is installed below the flat roof deck this is called a cold roof. Of course you don t need to live in a modern house to deal with a flat roof. These decks are often referred to as floating as they are not secured in place as a stand alone structure.

Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. Careful detailing of membrane roofs at corners doorways and penetrations is critical for long term performance. 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.