SERVICES / TECHNICAL SERVICES /
U-VALUE CALCULATIONS /
In order to demonstrate that wall constructions comply with the requirements of the Building Regulations for the conservation of Fuel and Power, namely Approved Documents L1 (dwellings) and L2 (other buildings) for England & Wales, and Technical Standards Part J for Scotland, PermaRock is able to provide U-values calculated in accordance with the Combined Method procedures of BS EN ISO 6946, based on wall construction information provided by the specifier.
For constructions that cannot be readily handled by the methods in BS EN ISO 6946, U-values may be calculated by numerical analysis. In some cases correction factors for linear thermal transmittance of junctions can be provided.
PermaRock also provides, alongside each U-value calculation, an assessment of condensation risk. Internal and external environmental conditions can be adjusted to meet specific building use criteria in order that accurate assessments of condensation risk can be provided, therefore tailoring the system accordingly.