Offices Nationwide
Air Testing & Leakage
We have a checklist you can download for Air Leakage Testing. If you follow our air tightness checklist, this will improve your likelihood to achieve a pass!
Sound Transmissions
Paths can be interrupted by insulation and blocking air paths. A material's insulation is governed by mass, stiffening and damping...more
Part L1B
Conservation of fuel and power in Existing Dwellings
Guidance for work to existing dwellings including alterations, conversions and extensions.
SAP Calculations is sometimes referred to as SAP Conversion Calculations, SAP Conversion rating, SAP Conversion Assessment, Part L1B Compliance, SAP Conversion Calcs, SAP Conversion Calc.
SAP Calculations Across the UK
Why Do I Need A SAP Calculation?
Under Part L of Building Regulations in the UK, since 2006, any new dwellings or conversions need to have a SAP Calculation and Predicted EPC before any work can begin.
You will need to provide information about energy efficiency in a Predicted Energy Assessment (PEA) if you are planning to sell the property before it has been built.
It is the responsibility of the builder to provide any On Construction EPCs when a home is constructed. This will also apply if a building is converted into fewer or more units (material change of use) and changes are made to the heating, hot water provision or air conditioning/ventilation services.
What Is A SAP Calculation?
A SAP rating represents the cost of energy required by a property over the course of a year with a score of 100 meaning there's no energy cost. This is calculated from lighting, heating, hot water systems, renewable technolgies used and the elements of structure. The higher the score, the lower the cost of running it.
A SAP calculation, the Government's Standard Assessment Procedure for Energy Ratings, is required to produce an On Construction EPC (Energy Performance Certificate) or a Predicted Energy Assessment (PEA).
How Is A SAP Assessment Undertaken?
A SAP is done off-site but requires plans and drawings of the site in order to be calculated. Amongst other things, the SAP assessor will determine how good the thermal elements are in the floors and walls and how well heat passes through these elements - this is known as a 'U' value. A high 'U' value represents a high amount of heat lost - this is used in the SAP calculation.
The crucial information needed for the SAP software relates to the type of dwelling, floors, walls, the roof, windows, doors, lighting, renewable technologies, 'U' values, hot water and ventilation. With this, we can determine if a building complies with Building Regulations in the UK.
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In Area L
Part L1B Compliance in Lacock, Part L1B Compliance in Ladybank, Part L1B Compliance in Lairg, Part L1B Compliance in Lakenheath, Part L1B Compliance in Lamberhurst, Part L1B Compliance in Lambeth, Part L1B Compliance in Lambourn, Part L1B Compliance in Lamlash, Part L1B Compliance in Lampeter, Part L1B Compliance in Lanark, Part L1B Compliance in Lancaster, Part L1B Compliance in Lanchester, Part L1B Compliance in Lancing, Part L1B Compliance in Lands End, Part L1B Compliance in Langholm, Part L1B Compliance in Langley Mill, Part L1B Compliance in Langport, Part L1B Compliance in Lanreath, Part L1B Compliance in Larbert, Part L1B Compliance in Largs, Part L1B Compliance in Larkhall, Part L1B Compliance in Larne, Part L1B Compliance in Lasswade, Part L1B Compliance in Laugharne, Part L1B Compliance in Launceston, Part L1B Compliance in Laurencekirk, Part L1B Compliance in Lavenham, Part L1B Compliance in Lawence Hill, Part L1B Compliance in Leamington Spa, Part L1B Compliance in Leatherhead, Part L1B Compliance in Lechlade, Part L1B Compliance in Ledbury, Part L1B Compliance in Lee, Part L1B Compliance in Lee-on-the-Solent, Part L1B Compliance in Leeds, Part L1B Compliance in Leeds, Part L1B Compliance in Leek, Part L1B Compliance in Leicester, Part L1B Compliance in Leigh, Part L1B Compliance in Leigh-on-Sea, Part L1B Compliance in Leighton Buzzard, Part L1B Compliance in Leiston, Part L1B Compliance in Leominster, Part L1B Compliance in Lerwick, Part L1B Compliance in Leslie, Part L1B Compliance in Lesmahagow, Part L1B Compliance in Letchworth, Part L1B Compliance in Leven, Part L1B Compliance in Lewes, Part L1B Compliance in Lewisham, Part L1B Compliance in Leyburn, Part L1B Compliance in Leyland, Part L1B Compliance in Leyton, Part L1B Compliance in Leytonstone, Part L1B Compliance in Lichfield, Part L1B Compliance in Liddington, Part L1B Compliance in Lidlington, Part L1B Compliance in Lifton, Part L1B Compliance in Lightwater, Part L1B Compliance in Limavady, Part L1B Compliance in Lincoln, Part L1B Compliance in Lindridge, Part L1B Compliance in Lingfield, Part L1B Compliance in Linlithgow, Part L1B Compliance in Linton, Part L1B Compliance in Liphook, Part L1B Compliance in Lisburn, Part L1B Compliance in Liskeard, Part L1B Compliance in Lisnaskea, Part L1B Compliance in Liss, Part L1B Compliance in Litherland, Part L1B Compliance in Little Walsingham, Part L1B Compliance in Littleborough, Part L1B Compliance in Littlecott, Part L1B Compliance in Littlehampton, Part L1B Compliance in Littleport, Part L1B Compliance in Liverpool, Part L1B Compliance in Liversedge, Part L1B Compliance in Livingston, Part L1B Compliance in Lizard, Part L1B Compliance in Llanberis, Part L1B Compliance in Llandeilo, Part L1B Compliance in Llandovery, Part L1B Compliance in Llandrindod Wells, Part L1B Compliance in Llandudno, Part L1B Compliance in Llandysul, Part L1B Compliance in Llanelli, Part L1B Compliance in Llanfyllin, Part L1B Compliance in Llangefni, Part L1B Compliance in Llangollen, Part L1B Compliance in Llanidloes, Part L1B Compliance in Llanrhaeadr-ym-Mochnant, Part L1B Compliance in Llanrug, Part L1B Compliance in Llanrwst, Part L1B Compliance in Llansteffan, Part L1B Compliance in Llantrisant, Part L1B Compliance in Llantwit Major, Part L1B Compliance in Llanwrtyd Wells, Part L1B Compliance in Llay, Part L1B Compliance in Loanhead, Part L1B Compliance in Lochgelly, Part L1B Compliance in Lochgilphead, Part L1B Compliance in Lockerbie, Part L1B Compliance in Lockleaze, Part L1B Compliance in Loftus, Part L1B Compliance in Loggerheads, Part L1B Compliance in London, Part L1B Compliance in Londonderry, Part L1B Compliance in Long Eaton, Part L1B Compliance in Long Melford, Part L1B Compliance in Long Stratton, Part L1B Compliance in Long Sutton, Part L1B Compliance in Longbridge, Part L1B Compliance in Longfield, Part L1B Compliance in Longridge, Part L1B Compliance in Longstreet, Part L1B Compliance in Looe, Part L1B Compliance in Lossiemouth, Part L1B Compliance in Lostwithiel, Part L1B Compliance in Loughborough, Part L1B Compliance in Loughton, Part L1B Compliance in Lound, Part L1B Compliance in Louth, Part L1B Compliance in Lower Edmonton, Part L1B Compliance in Lowestoft, Part L1B Compliance in Ludlow, Part L1B Compliance in Lurgan, Part L1B Compliance in Luton, Part L1B Compliance in Lutterworth, Part L1B Compliance in Lydbury North, Part L1B Compliance in Lydd, Part L1B Compliance in Lydney, Part L1B Compliance in Lye, Part L1B Compliance in Lyme Regis, Part L1B Compliance in Lymington, Part L1B Compliance in Lymm, Part L1B Compliance in Lympstone, Part L1B Compliance in Lyndhurst, Part L1B Compliance in Lynmouth, Part L1B Compliance in Lynton, Part L1B Compliance in Lytham St Anne's,