What are SIPs?
SIPs feature a timber facing, typically either OSB or particleboard, bonded either side of an insulated core. This highly insulated design can allow them to achieve exceptional thermal performance. For example, 172 mm SIPs with a rigid urethane insulation core can achieve U-values of 0.16 W/m2.K or better without the need for additional insulation. Their factory engineered joints can also help to significantly limit air-leakage from the building envelope.