Point of Reference
10 dBA is the sound level of normal human breathing. To put it into perspective, thunder is a whopping 120 dBA...more
Privacy describes the perceived sound reduction across a wall, a function of both sound insulation and background noise...more
Portsmouth - Air Testing - 0239 366 0106
When Should The Test Take Place?
A building envelope will need to be completed before the air test takes place - which should be one of the last surveys undertaken once all the walls, windows, doors etc. are complete and sealed. This ensures no air will escape and prevent drafts through the property which will in-turn improve your air permeability score.
Do I Need An Air Leakage Test?
Domestic properties and commercial buildings over a certain size must have a passing air leakage certificate before the property can be handed over following a sale. All new buildings in England and Wales have had this requirement since 2006 and in Scotland this has been mandatory since 2010.
Planning your test in advance will help our experience air assessment team covering Portsmouth to determine how many tests you'll need ahead of time per property and will be happy to offer advice on the best ways to gain your air permeability rating.
On a large plot of new houses that are built to a similar specification, only a sample of the houses will need to be air tested. This is outlined in Part L of Government building regulations.
How Many Properties Need An Air Tightness Test?
The number of tests required are as follows:
- 4 or less properties of the same type: one test needed per type
- More than 4 but less than 40 dwellings of a type: at least two tests of each type
- More than 40 properties of a type: 5% of each type UNLESS the first 5 get a passing score - then this can be dropped to just 2%
What Does An Air Leakage Test Involve?
Employees can still do their job inside a commercial building in Portsmouth, within reason, though may feel some discomfort due to the noise of the fan and the draught that will be felt throughout the building. There should be no outside access once the test has begun - which lasts for approximately 90 minutes, so plan accordingly.
Whilst the air tightness test is being undertaken, furniture will not be affected but smaller items such as paper must be held down or removed completely so they're not blown about. The pressure of the room will be tested and as such all windows and doors that lead outside must be securely closed to avoid them swinging open and the test being abandoned. Similarly, all internal doors should be wedged open to avoid being slammed shut.
Air tests cannot be carried out if the wind speed is more than 13mph - 3 metres per second is the ideal wind speed when undertaking an air test in Portsmouth. An air test involves placing a large fan, or several fans, to an opening within the property; usually a doorway. The fans will increase and decrease in speed that will in-turn change the building's air pressure and record the results.
What Air Permeability Rating Do I Need?
Your air permeability rating resembles the amount of uncontrolled air that's leaking from the dwelling. A passing score in Portsmouth is 10 m³/(h.m²). If the air test fails, we will help you identify where these leakage areas occur in the hope that a passing rate will be achieved following a re-test.
For further Air Testing information for your area, be sure to check out Air-Testing-Portsmouth.co.uk.
Our other services include:
Thermography, Sustainability Statements, Part E, SAP Conversion Calculations, Part F Ventilation Testing, SAP Extension Calculations, Environmental Noise, Part G - Water Calculations, Energy Statements, Acoustic Testing, Code 4 Sustainable Homes, SAP Calculations (TER/DER), On Construction EPC,
Air Testing can also be known as:
Fan Pressure Testing, Domestic Air Pressure Testing, Domestic Fan Pressure Testing, Domestic House Leakage Testing, Air Pressure Testing, Domestic Air Leakage Testing, Domestic Air Tightness Testing, Domestic Air Integrity Testing, Air Tightness Testing, Domestic Air Testing, House Leakage Testing, Air Integrity Testing, Air Leakage Testing,
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