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Paths can be interrupted by insulation and blocking air paths. A material's insulation is governed by mass, stiffening and damping...more
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!
The Government’s national calculation methodology for assessing water efficiency in new dwellings.
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
What Is A SAP Calculation?
SAP calculations are the Government's Standard Assessment Procedure for Energy Ratings. In order to produce an On Construction EPC (Energy Performance Certificate) or a Predicted Energy Assessment (PEA), a SAP is required, as this is the calculation these certificates are based on.
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.
How Is A SAP Assessment Undertaken?
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.
Amongst other things, the SAP assessor will determine how good the thermal elements are in the floors and walls as well as 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 which is done off-site but requires plans and drawings of the site in order to be calculated.
Why Do I Need A SAP Calculation?
When changes are made to the heating, hot water provision or air conditioning/ventilation services, it is the responsibility of the builder to provide any On Construction EPCs upon completiong of a new home or conversion into fewer or more units.
If you are selling a home before it has been built, you will need to provide information about energy efficiency in a Predicted Energy Assessment (PEA).
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.
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Part L1B Compliance in Dagenham, Part L1B Compliance in Dalbeattie, Part L1B Compliance in Dalkeith, Part L1B Compliance in Dalry, Part L1B Compliance in Dalton in Furness, Part L1B Compliance in Danbury, Part L1B Compliance in Darlington, Part L1B Compliance in Dartford, Part L1B Compliance in Dartmouth, Part L1B Compliance in Darwen, Part L1B Compliance in Datchet, Part L1B Compliance in Daventry, Part L1B Compliance in Dawlish, Part L1B Compliance in Deal, Part L1B Compliance in Defford, Part L1B Compliance in Denbigh, Part L1B Compliance in Denny, Part L1B Compliance in Denstone, Part L1B Compliance in Denton, Part L1B Compliance in Deptford, Part L1B Compliance in Derby, Part L1B Compliance in Dereham, Part L1B Compliance in Devizes, Part L1B Compliance in Dewsbury, Part L1B Compliance in Didcot, Part L1B Compliance in Dinas Powys, Part L1B Compliance in Dingle, Part L1B Compliance in Dingwall, Part L1B Compliance in Dinnington, Part L1B Compliance in Diss, Part L1B Compliance in Dobwalls, Part L1B Compliance in Dolgellau, Part L1B Compliance in Dolla, Part L1B Compliance in Donaghadee, Part L1B Compliance in Doncaster, Part L1B Compliance in Dorchester, Part L1B Compliance in Dorchester, Part L1B Compliance in Dorking, Part L1B Compliance in Dornoch, Part L1B Compliance in Douglas, Part L1B Compliance in Douglas, Part L1B Compliance in Dover, Part L1B Compliance in Downham Market, Part L1B Compliance in Downpatrick, Part L1B Compliance in Downton, Part L1B Compliance in Drayton, Part L1B Compliance in Driffield, Part L1B Compliance in Droitwich, Part L1B Compliance in Dromore, Part L1B Compliance in Dronfield, Part L1B Compliance in Droylsden, Part L1B Compliance in Drymen, Part L1B Compliance in Dudley, Part L1B Compliance in Dudley, Part L1B Compliance in Dufftown, Part L1B Compliance in Dukinfield, Part L1B Compliance in Dulverton, Part L1B Compliance in Dulwich, Part L1B Compliance in Dumbarton, Part L1B Compliance in Dumfries, Part L1B Compliance in Dunbar, Part L1B Compliance in Dunblane, Part L1B Compliance in Dunchurch, Part L1B Compliance in Dundee, Part L1B Compliance in Dunfermline, Part L1B Compliance in Dungannon, Part L1B Compliance in Dungeness, Part L1B Compliance in Dunhampton, Part L1B Compliance in Dunkeld, Part L1B Compliance in Dunmow, Part L1B Compliance in Dunoon, Part L1B Compliance in Duns, Part L1B Compliance in Dunsfold, Part L1B Compliance in Dunstable, Part L1B Compliance in Dunster, Part L1B Compliance in Dunwich, Part L1B Compliance in Durham, Part L1B Compliance in Dursley, Part L1B Compliance in Duxford, Part L1B Compliance in Dyce, Part L1B Compliance in Dymchurch,