... and Truss-Rafter engineering were first introduced to the UK in 1964. Since then they
have proved to be an efficient, safe and economical method for supporting roofs.
specialised timber engineering companies, like BATT, timberframe truss-rafters are supplied to all sections of the
construction industry. Developments have been extensive, and today complex
roofscapes of, for example, attic-truss timber-structures and roofs with
wood-composite beams or bolted-timber rooftrusses, are easily formed with computer designed trussed rafters.
roof designers and trussed rafter manufacturers we are in an ideal
position to assist architects and specifiers
throughout the building industry to achieve affordable solutions for their
designs - no matter how unusual, advanced, or difficult - including
Simply provide us with
a brief sketch or description
of what is being considered, including alternatives, and we will do the rest.
whole roof is designed and specified using state-of -art computer aided
technology supplied by Wolf Systems. We can also arrange for one of our
specialist to visit and advise you
Benfield Advanced Timber Technologies
design, manufacture and erect structural timber engineered trussed rafters, roof
trusses, bolted trusses, loft attic trusses, roof beams and a range of specialist engineered
timber components for all types of building.
Our rooftrusses address all
roofing requirements across the uk and our roof designs embrace cut rafters as
well as trusses, or trussed rafters, for attics and lofts, including
conversions. We use the most technologically advanced materials in the
construction of our timber roof structure designs. These include kerto,
glulams, and other timber composites to deliver the strongest, most effective
timber engineered structure at the most economical manner.
practice all roofs and trusses are individually designed, engineered and
manufactured by us - often in conjunction with a timber frame for your
construction - to give you the strongest possible timber structure
design at the most cost effective price.
However unusual, however specialist, however difficult your requirements
for roof rafters are, contact
us with details for a no obligation consultation.
We use kiln dried lumber,
kerto, glulams and other wood composites for specialist and unique construction
projects throughout the UK.
We design all our trussed rafters in accordance with BS 5268: Part 3, the current
recognised Code of Practice, and the relevant Building Regulations. All
our roof trusses are manufactured in accordance with BSEN 1059
Bob Tail Trusses
Using 35mm timber our standard rafters can be designed up to 11
metres span, and 15 metres in 47mm timber. Spans in excess of these can be
designed but are often supplied as multiple rafters fixed together
It is more economical to standardise the range of pitches between
15 and 40 degrees, how
ever, trusses may be supplied outside this range. Care
should be taken when specifying because deflection problems may arise with such
things as very shallow pitches
Double 'W' Trusses
We can supply any
overhang to suit the customer's requirements, although it should be noted that
very large overhangs may cause the rafters to be uneconomical.
are usually spaced at 600 mm to take advantage of the greater economies they
offer, but where heavier loads need to be supported they are often positioned at
400 mm and 450 mm
Kiln dried, stress graded timber is used in
all our trusses to comply with current European & British Standards
While Copper Chrome and similar treatments
are not recommended for use with truss rafters,
one of the non-corrosive spirit based organic solvents, or the new waterborne
solutions may be used as a treatment if required.
We are proud to be a specialist
Wolf truss nail plate user and recommends
Wolf 100 nailpplates. These are precision punched 1mm gauge metal
plates with integral teeth, manufactured from structural grade
galvanised mild steel to BS 10147 Fe E 220 G275.
plates carry a 60 year performance warranty, covered by British
Agrément Certificate No 89 / 2290.
timber joints are required we use Wolf 125 - 1.25 mm galvanised steel
nailpates. Where construction requires heavier timbers, we import
and use use 1.5 mm guage nailplates with longer teeth from
heavier gauge nailplates are supplied in predetermined sizes. Wolf
15N are galvanised;
Wolf 15NE are stainless steel for specific applications only.
more detailed information about our Timber Rafter options, please fill in the
enquiry form and request a Technical Manual
ATT monitors and controls the quality of all products and manufacturing
accordance with ISO 9001
Wherever you are ... Whatever you need ....
'Better Build Benfield'
"... the sustainable way to build ..."
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