Traditional Timber Roof Construction Uk

Whilst you can have tiled roofs of 10 15 these are really flat roof construction with a cosmetic covering of tiles.

Traditional timber roof construction uk.

This form makes use of the purlin roof. There are two basic methods of pitched roof construction. Floor joists typically strong enough for light storage applications. For solid timber members in floors ceilings and roofs for dwellings and various companies do online calculation software.

The timbers are often 400mm or so centres and varyin size according to span. Trussed roofing appeared in the uk in the 1960s and rapidly took over the new housebuilding scene. A truss roof using factory made trusses which are delivered to site complete and just erected. Trussed roofs are available in fink truss and open or attic truss options detailed below.

Complex and bespoke roof designs can be implemented. Plentiful oak forests and a rich tradition in timber framed building were significant reasons for this. Green oak and other. A pitched or sloping roof has a pitch of at least 15 but often much more.

The more timber was needed to build the roof structure to span the space below. If your main interest is in flat roofs then you can learn more by reading flat roof construction part 4. Most of the steepest pitched roofs in england survive in the east where ironically it is driest. The cross frames include tie beams as they do in box framed construction.

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 awall plate at their head. However for practical purposes the self builder will still find the span tables in the old. Post and truss below right is by far the most common surviving timber framed building form. 50mm wide by 75mm 100mm or 125mm deep are allcommon.

In devon and cornwall rainfall is much higher but there was a. 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. Roof construction pitched room traditional joinery. Pitched roofs examples of pitched roofs.

Roof and wall elements are structurally united within each cross frame. Elm sweet chestnut hornbeam and other timbers were also used. Timbers were used unseasoned shortly after felling. Trada a trade association with a strong reputation for research and publication on all things timber have published span tables in a softback book called eurocode 5 span tables.

Timber has been the traditional material for building roofs as far back as early saxon times and beyond. Traditionally roofs were constructed on site using sawn timber typically with all joints simply nailed together. Creates a strong roof structure with mostly open loft space.