A truss is a piece of framework using triangular shapes.

Timber roof structure detail. Render on timber frame 2. Each modern roof truss is designed and made for a particular position in the roof structure and is made up of butt jointed timber lengths typically nailed together using plate fastenings no type of timber joint being used. Ventilated batten void warm roof eaves. Timber boarding on timber frame 1 9.

A top plate is nailed to the top of wall studs. It supports the roof load and helps transfer it down load bearing walls and into the foundations. Roof structures roofs 12section module 3 sheet 10 verge details and ladder frame the construction of the verge of a gable roof is shown below. Ventilated roofspace eaves 3 02 timber frame pitched roof.

Raised tie truss 3 3 3. Timber is a heavy material that adds strength to your roof but comes at quite the cost. This is the continuous timber beam on top of the walls that supports the roof structure. Conventional roofing is labour intensive and far more expensive than truss roofing.

The supporting structure and the covering. But this type of roof is seldom as attractive as the pitched form as it can result in a blocky stunted appearance. This frame consists of the last two rafters joined together by means of. The roof extends over the gable wall to give a suitable overhang.

Ventilated roofspace gable 3 03 timber frame pitched roof. Structure there are two basic components of a timber roof. Tank stand and walkway 3 3. Internal wall to internal wall junctions 3.

Modern timber roofs are mostly framed with pairs of common rafters or prefabricated wooden trusses fastened together with truss connector plates timber framed and historic buildings may be framed with principal rafters or timber roof trusses roofs are also designated as warm or cold roof depending on how they are designed and built with regard to thermal building insulation and ventilation. To achieve this is a simple frame called a ladder frame is constructed. Historically truss timbers have been bolted together or mortise and tenoned and then pegged. This is the plate that the roofing elements sit on and effectively the meeting point of the walls and the roof structure.

When constructing a pitched rooftop with timber this can be an incredibly labor intensive build. Timber pitched rooftop construction details focus on the timber construction that is commonly used in most roofing constructions. Ventilated rafter void gable 3 04 timber frame pitched roof. For homebuilders a timber frame for a flat roof is usually the cheapest option and the easiest to build.

The construction of the flat roof is similar to that of the timber upper floor. Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls. These are the horizontal members that provide a structure to fix the ceiling and support and fix the diagonal rafters that define the roof shape and are attached at the top to a ridge beam.

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