Flat Roof Detail Construction

Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls.

Flat roof detail construction.

The membrane roof is the latest roofing technology and is also the roof of choice in commercial construction. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. See more ideas about flat roof roof roof construction. If insulation is installed below the flat roof deck this is called a cold roof.

Known technically as elastomeric or plastomeric roof membrane depending on the material single ply roofs come in a few different varieties including. 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 flat roof must be strong durable and stable throughout its lifetime. It must provide adequate protection against the elements keeping the buildings structure and interior dry.

A note to consider before construction. Sizes of joists needed for flat roof construction. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

Trada and approved document part a give guidance on sizes of joists for flat roofs relating to spans and loading. To build a flat roof you ll want to have a thorough understanding of how the process of constructing the flat roof works and the different methods available. As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. The construction of the flat roof is similar to that of the timber upper floor.

Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley. That will help you remember certain factors and details to build the best possible flat roof. It dealt in detail with flat roof constructions and. Flat roof types.

May 9 2017 explore bernice ohene s board flat roof construction on pinterest. Going back about 120 years the grandfather of flat roofs is the built up roof. So any timber joists that are used need to be strong enough to support this weight. Old asbestos roofs are often replaced with flat roofs.