HSK Contractors Ltd.
Traditional Roofs
The best for Traditional Roofs ,
Cut Roofs ,
and Truss Roofs in the South West of England
Roofs
So, what is a Trussed Timber Roof?
A roof truss is a prefabricated truss made of light timbers joined with nailplates and used in most new domestic roofs in industrialised countries. The roof truss has mostly superseded the cutting of rafters and ceiling joist on site, and is generally supported only on outer walls. Being close spaced and joined by roofing battens, trussed rafters share loads. Spans vary from 5m to 11m, slopes from 15 degrees to 35 degrees. Hip ends are made with a girder truss that carries the hip and jack trusses, and with smaller but similar truncated trusses. Roof corners may have saddle trusses on top of the standard trusses. The complete roof structure is delivered in bundles at wall plate level, lifted by a small crane on the delivery truck. After the trusses are stood up in place, truss clips are nailed on, as well as roofing battens and bracing.
Trussed rafters must be fully braced to give a rigid and stable roof.
Omitted, wrongly position, or badly fixed bracing can allow distortion
or collapse. Diagonal braces are fixed first, at about 45 degrees from
eaves to ridge and between wall plates. Horizontal binders (running
ties) then go lengthways, near the ridge, under the rafters, and over
the ceiling, fixed near the nailplate joints. Large roof trusses (of
more than 8m span) need chevron bracing on the truss diagonal members.
Trussed Rafters have proved to be an efficient, safe and economical
method for supporting roofs since their introduction into the UK in
1964. They are manufactured by specialised timber engineering companies,
who supply to all sections of the construction industry. Developments
have been extensive, and today complex roofscapes are easily formed with
computer designed trussed rafters.
There need be no restrictions on lower floor layouts since the trusses
can clear span on to external walls although greater spans and room
widths can be achieved by utilising internal loadbearing walls.
A Room in the Roof
Room in the Roof can add profit and scalability to any new development.
The extra cost of third floor living space which buyers are prepared to
pay for in an investment that greatly exceeds the cost of production.
So, if you are thinking about 'Room in the Roof' construction, H S K
contractors will be pleased to help you with your trussed rafter needs-
from planning, specialist trussed rafters, detailed calculations, roof
lay outs and delivery to suit your needs.
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Ltd.
2008.
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Bratton, BA13 4SW
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