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Green Oak FramingThe Kingspan
Structural Insulated Panels & Green Oak FramingGREEN OAK FRAMED BUILDINGS These buildings have a unique architectural style and character
which affords the internal display of traditionally crafted and
jointed timbers. As well as their aesthetic benefits, these timbers
provide the structural frame of the building and a support framework
for a cladding system envelope. Normally this cladding system comprises
a timber stud wall with infill insulation which is weatherproofed
with a breather membrane and either timber boarding on battens or
a brickwork leaf with a cavity behind it. THE USE OF KINGSPAN
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WALLS
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Lining to Structural
Insulated Panel |
Weatherproofing layer
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U-value
(W/m²K)* |
Diagram
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12.5 mm vapour check
plasterboard on battens |
Breather membrane, 50 mm cavity,
brickwork facing |
0.21
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10
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12.5 mm plasterboard
on adhesive dabs or battens |
Breather membrane, timber boarding
on 25 mm deep battens |
0.21
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11
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12.5 mm plasterboard
on adhesive dabs or battens |
Breather membrane, timber boarding
on 25 mm deep battens with 20 mm Kingspan Kooltherm K5 EWB installed between battens |
0.17
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12
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12.5 mm plasterboard
on adhesive dabs or battens |
20 mm Kingspan Kooltherm K5 EWB
and 10 mm polymer render |
0.18
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13
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12.5 mm plasterboard
on adhesive dabs or battens |
40 mm Kingspan Kooltherm K5 EWB
and 10 mm polymer render |
0.15
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13
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12.5 mm plasterboard
on adhesive dabs or battens |
70 mm Kingspan Kooltherm K5 EWB
and 10 mm polymer render |
0.12
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13
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* Values shown are for both the proportional area method and the combined method of U-value calculation.
NEGLIGIBLE COLD BRIDGING
The high proportion of cold bridging in a traditional timber stud wall is almost completely eliminated with the use of Kingspan TEK Structural Insulated Panels. The only cold bridges are around openings where timbers are fixed into channels routed out of the insulation core of the Kingspan TEK Structural Insulated Panels. These timbers are used for the fixing of door and window frames.
This amounts to 2% of bridging timber for a typical domestic green oak frame building. An insignificant cold bridge is also created by the fixings that attach the panels to the oak frame.
“As a progressive company producing traditionally
jointed heavy timber frames, T J Crump Oakwrights have been keen
to find an enclosure system that offers cutting edge thermal efficiency
with minimal on-site fitting time. SIPs help to achieve this by
allowing us to pre-cut the panels in our workshop. Our clients appreciate
the character of a traditionally constructed oak frame with state
of the art insulation levels.”
Tim Crump, Managing Director, T J Crump Oakwrights Ltd.,
Hereford
