Timber Pitched Roof Construction

The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction.

Timber pitched roof construction.

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. Building a pitched roof prefabricated trusses. A trussed roof will often rest on a timber wall plate as with a conventional one. A pitched roof is a roof comprising a sloping surface or surfaces with an angle of usually over 20 degrees.

All the figures are based on roofing tiles or slates laid on timber laths over sarking felt. One pitched roof construction method is a cut roof method. Pitched roof timber sizes. To be more specific a pitched roof requires a pitch of more than 10 degrees or a roof with two slopes that meet at a central ridge.

Pitched roof designing buildings wiki share your construction industry knowledge. 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. Each truss is lifted into position and fixed to the plate. It is a bi fold bi planer roof with a ridge at its highest point.

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. The latter stages of construction felt battening tiling remain the same regardless of the framing method used.