Flat Timber Roof Structure

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.

Flat timber roof structure. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Works best in simple roof designs. Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls. Flat roofs can be used to create box shapes cantilevered into daring overhangs or can be planted to create usable vegetated gardens.

The construction of the flat roof is similar to that of the timber upper floor. Uses relatively small timber sections. 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 steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure.

This will give additional stability to the roof structure. Load bearing or primary structure usually constructed in timber in a residential construction. For additional stability you can also use steel joists that are built into one or both of the walls. In most cases the roof can be erected in a day.