Thru-Wall Guaranteed SIPS System

SIPS

Thermal

Thermal performance and air-tightness of the SIP wall is determined by the thickness of the core material and its thermal properties. Thru-Wall consists of a polyurethane closed cell core material, sandwiched between OSB3 to BS EN 300:2006.

For ease of use the chart to the right has been calculated using the method required by the Building Regulations Part L2 (England & Wales), Building Standards Part J (Scotland), BS EN ISO 6946:1997 and BRE report (BRE443: 2006)

Insulation Qualities:

Thermal conductivity (k value) tested to BS EN 13165 = 0.024w/mk based on an aged thermal conductivity

90%+ closed cell = virtually zero moisture absorption

Mean density = 45kg mtr cu. Minimum not less than 38kg.

SIP Thickness 125
mm
150
mm
180
mm
200
mm
225
mm
250
mm
OSB 3 15mm 15mm 15mm 15mm 15mm 15mm
Polyurethane 95mm 120mm 150mm 170mm 195mm 220mm
2010 Building Reg. 'U' Value* 0.30 0.30 0.30 0.30 0.30 0.30
SIP's 'U' Value 0.25 0.20 0.16 0.14 0.12 0.10

*These U values are extracted from the new 2010 ADL1A document and are the highest values to be compliant. However, the achievement of the TER is likely to require significantly increased fabric performance U values than those quoted in the chart exactly what the Thru-Wall SIPS system can provide.