Thermal modelling trials carried out by certification body BM TRADA have shown that Actis Hybrid insulation products have a dramatic impact on counteracting thermal bridging and act as excellent thermal blankets.
And a follow up SAP exercise carried out by an independent energy assessor to measure the impact of these calculations on a whole building concluded that using Hybrid generated one of the best Y values ever assessed by his firm. The BM TRADA thermal assessment involved measuring and collating psi values for 16 model junctions insulated with vapour control layer H Control Hybrid and breather membrane Boost R Hybrid.
Interestingly, the test showed that using the actual psi values calculated by BM TRADA created a far more thermally efficient building overall than when the assessors used the government prescribed default psi values. Raymond McGurk from Building Regulations Services Ltd who carried out the SAP experiment stated in his report "This is the one of the best Y values I have ever come across"