A U-Value Calculation measures the thermal transmittance (transfer of heat) of each material used within a structure/ building. The lower the total u-value is, the slower the heat is transmitted in and out of the building (better insulated).
Building Regulations/Standards continue to tighten the requirements of U-Values, with lower limits provided to ensure that building elements, materials and fabric are considered throughout the design and construction process.
Elmhurst Energy Consultancy provides U-Value Calculations to assist with Building Regulations/Standards Compliance- particularly important for extension projects (extension calculations).
A U-Value calculation is a computer-based assessment that measures the total thermal resistance of a structure. The unit of measurement for U-Values is given as W/m2K (Watts per square metre degree Kelvin); these are calculated through an approved U-Value Calculator which takes into account the material thickness and conductivity (K-Value).
With the amount of terminology thrown around by Building Regulations/ Standards it can be tricky to identify what calculation is required for compliance and when.
Where compliance is required for a whole-building energy performance (completely new buildings), U-Values are used within Standard Assessment Procedure (SAP) calculations for new dwellings, and also Simplified Building Energy Modelling (SBEM) calculations for new non-dwellings.
However for some extensions, U-Value calculations should be undertaken for compliance.
Call us now on
01455 883 259
and discuss your project with us, there’s no obligation and we’re happy to advise you.
Or why not complete our 'Get a quote' form