Traditional Roof Construction Details

In this method there are joists and rafters.

Traditional roof construction details.

1 2 the total span is equal to the horizontal span that one rafter will cover. 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. The overall construction of a traditional cut roof is to ensure that the load of the roof is evenly transmitted to the walls below. There are two basic types of roof construction.

Flat roofs pitched or sloping roofs. This can be determined by the size of the timbers or the size of the roof. A truss roof using factory made trusses which are delivered to site complete and just erected. There are two basic methods of pitched roof construction.

Pitched room traditional joinery traditionally roofs were constructed on site using sawn timber typically with all joints simply nailed together. This reflects the weatherproofing requirements of older roofing materials like thatch and peg tiles. 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. The finished structure is readily adaptable.

Every member of a traditional cut roof is individually cut and assembled on site. There are a couple of different methods for constructing pitched style roofs. One pitched roof construction method is a cut roof method. 50mm wide by 75mm 100mm or 125mm deep are all.

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. They span from the wallplate to the ridge board providing a platform for the underlay battens and tiles. The timbers are often 400mm or so centres and vary in size according to span.