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All conversions require either SAP (residential) or SBEM (commercial) calculations. The process is very similar to ‘new builds’ except the DER or BER does not need to be better than the TER in this case.
All other areas of SAP/SBEM must however comply, including minimum area weight U values for walls, floors, roofs and openings, minimum heating and cooling efficiencies, heating & lighting controls, minimum air leakage rates etc.
We require a full set of plans together with our completed SAP/SBEM Form to carry out these calculations.
We highly recommend these are carried out at Design Stage to ensure the property will meet the requirements when completed.
Residential property:
Download our SAP (Conversions) Form here
Commercial property:
Download our SBEM Form here
With engineers strategically placed throughout the Midlands and further we provide a local, cost effective service at short notice. The areas we cover include: Bedfordshire, Cambridgeshire, Derby, Derbyshire, Herefordshire, Leicester, Leicestershire, Lincolnshire, Norfolk, Northamptonshire, Nottingham, Nottinghamshire, Peterborough, Rutland, Shropshire, Staffordshire, Stoke-on-Trent, Telford and Wrekin, Wales, Warwickshire, West Midlands, Worcestershire