Flat Timber Roof Detail

Normally a slope of inch per foot is used.

Flat timber roof detail. A roof which is approximately flat is called as a flat roof. A cold flat roof is one where the insulation is between or between and below the roof joists. Flat roofs can be used to create box shapes cantilevered into daring overhangs or can be planted to create usable vegetated gardens. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.

Cold roof vent for ventilation of a roof spacing. The construction of the flat roof is similar to that of the timber upper floor. Mounting parts snow guard. This is used for refurbishment e g.

Where a new flat roof abuts an existing external wall the joists can be hung on metal joist hangers which are fixed to a horizontal timber plate wall bolted to the wall. The flat roof is an architectural device that is loved by designers for its ability to create simplistic linear forms. See more ideas about roof detail roof architecture details. 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.

Inner gutter in a warm roof. The insulation is below the deck but above the plasterboard. Cold roof vent timber. Inner gutter warm roof.

Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls. Trada and approved document part a give guidance on sizes of joists for flat roofs relating to spans and loading. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. A cavity closer should be provided to the top of the walls to prevent fire spread and to stop damp air entering the roof space.

The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure. For additional stability you can also use steel joists that are built into one or both of the walls. Usually a flat roof is built with a slight slope to provide some drainage. Vent stack inverted roof.

Flat roofs aren t actually flat but must slope to drain water. Search flat roof details.