Timber Flat Roof Detail

Today flat roofs are used by architects for the same reasons that they became a cornerstone of modernist architecture.

Timber flat roof detail.

The construction of the flat roof is similar to that of the timber upper floor. Usually a flat roof is built with a slight slope to provide some drainage. Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls. Timber flat roof carports timber flat roof construction timber flat roof construction details timber flat roof deck timber flat roof detail timber flat.

Having a manual for warm flat roof construction with details and a summary of rules to follow helps. On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases. Roof panels 3 8 1 roof panel connections 3 9. Flat roof joist and decking 3 10.

For additional stability you can also use steel joists that are built into one or both of the walls. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Normally a slope of inch per foot is used. Parapet detail joists parallel details in section 4.

Flat roofs aren t actually flat but must slope to drain water. Intermediate floor joist parallel 4 3. A roof which is approximately flat is called as a flat roof. Parapet detail joists perpendicular 3 13.

It dealt in detail with flat roof constructions and can be regarded as one of the first guidelines for such roofs fig. Trada and approved document part a give guidance on sizes of joists for flat roofs relating to spans and loading. From there the flat roof system you choose will determine the materials you apply. The abutment detail of a flat roof is vital in order to prevent moisture penetration.

Dormer in section 3 11. The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure. Dormer in perspective view 3 12. Similar to the abutment of a lean to roof lead flashing is chased into the external block allowing it to overlap the lead upstand coming from the tiles.