Traditional Roof Construction Details

There are a couple of different methods for constructing pitched style roofs.

Traditional roof construction details.

A truss roof using factory made trusses which are delivered to site complete and just erected. There are two basic types of 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. Gable end roof construction if the pitched roof is not a lean to but a normal gable roof we have to divide the total roof span by two in order to form two right angle triangles back to back.

This reflects the weatherproofing requirements of older roofing materials like thatch and peg tiles. 50mm wide by 75mm 100mm or 125mm deep are all. One pitched roof construction method is a cut roof method. Traditional or cut roofs usually comprise a series of sloping timbers rafters fixed to a wall plate at their feet and a ridge board or possibly a wall plate at their head.

Flat roofs pitched or sloping roofs. They span from the wallplate to the ridge board providing a platform for the underlay battens and tiles. 1 2 the total span is equal to the horizontal span that one rafter will cover. Every member of a traditional cut roof is individually cut and assembled on site.

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. This can be determined by the size of the timbers or the size of the roof. There are two basic methods of pitched roof construction. The overall construction of a traditional cut roof is to ensure that the load of the roof is evenly transmitted to the walls below.

The finished structure is readily adaptable. The timbers are often 400mm or so centres and vary in size according to span. In this method there are joists and rafters.