Pitched Roof Timber Roof Construction Details

Construction details of pitched roof.

Pitched roof timber roof construction details. A truss roof using factory made trusses which are delivered to site complete and just erected. Ventilated batten void warm roof eaves 3 05 timber frame pitched roof. Pitched roof timber sizes. Pitched roofs are generally provided with a pitch of about 20 degrees to the horizontal for slates and 40 to 60 degrees for tiles.

A pitched roof is a roof that slopes downwards typically in two parts at an angle from a central ridge but sometimes in one part from one edge to another. One pitched roof construction method is a cut roof method. While the gabled roof is always pitched in two directions the mono pitch always slants in a single direction. Ventilated batten void warm roof gable 3 06 timber frame timber flat roof 3 07 timber frame timber flat roof with parapet 3 08 timber frame lintel at window head 3 09 timber frame windows and doors jambs and.

A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc. They differ considerably from the conventional gabled roofs in shape and construction. The minimum pitching or sloping degree for the roof is decided by the minimum slope necessary for excluding the roof covering and drain rainwater to eaves or valley gutter. The pitch of a roof is its vertical rise divided by its horizontal span and is a measure of its steepness.

3 04 timber frame pitched roof. There are two basic methods of pitched roof construction. The building regulations in the uk provide guidance on roof design. The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction.

This can be determined by the size of the timbers or the size of the roof. Mono pitched roofs are also known by the names of skillion roofs shed roofs pent roof and lean to roof. This is more of a traditional manner in regards to cutting the timber while onsite and building up the roof by the use of rafters ridge boards joists and purlins among others. An example of each is shown in figure 2 1.

Roofs tend to be either pitched or flat and typically in residential construction timber is the most common material used.