Environmental Noise Levels
The max exposure time at 85 dBA is 8 hours, at 110 dBA it's just 1 min 29 seconds. If exposed, limit the time and wear hearing protection...more
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more
Air Leaking Testing Across the UK
Do I Need An Air Leakage Test?
All new buildings in England and Wales have had a mandatory requirement since 2006 (2010 in Scotland) that domestic and commercial buildings, over a certain size, must have a passing air leakage certificate before the property can be sold.
Part L of the Government building regulations explains that 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.
We offer air leakage testing throughout the UK where our experienced assessors will be happy to offer advice on the best ways to gain your air permeability rating. Planning your test in advance will help us determine how many tests you'll need ahead of time per property.
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 the UK 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.
What Does An Air Leakage Test Involve?
Employees can still do their job inside a commercial building in the UK, 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.
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. Please note: an air test cannot be carried out if wind speed is more than 13mph. 3 metres per second is the ideal wind speed when undertaking an air test in the UK.
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.
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%
When Should The Test Take Place?
For obvious reasons, an air pressure test is generally one of the last surveys to be undertaken once all the walls, windows, doors etc. are complete and sealed to stop any air escaping and prevent drafts through the property. The building envelope will also need to be completed.
For further Air-Testing information for your area, be sure to check out Air-Testing-.co.uk.
Copyright 2019 E2 Specialist Consultants Limited
Company No. 06728970
In Area O
Domestic AIR Tests in Oadby, Domestic AIR Tests in Oakamoor, Domestic AIR Tests in Oakham, Domestic AIR Tests in Oban, Domestic AIR Tests in Ockham, Domestic AIR Tests in Oddingley, Domestic AIR Tests in Okehampton, Domestic AIR Tests in Old Warden, Domestic AIR Tests in Old Windsor, Domestic AIR Tests in Oldbury, Domestic AIR Tests in Oldham, Domestic AIR Tests in Oldmeldrum, Domestic AIR Tests in Olney, Domestic AIR Tests in Omagh, Domestic AIR Tests in Once Brewed, Domestic AIR Tests in Ongar, Domestic AIR Tests in Orford, Domestic AIR Tests in Orkney, Domestic AIR Tests in Ormskirk, Domestic AIR Tests in Orpington, Domestic AIR Tests in Ossett, Domestic AIR Tests in Oswaldtwistle, Domestic AIR Tests in Oswestry, Domestic AIR Tests in Otley, Domestic AIR Tests in Otley, Domestic AIR Tests in Ottery St. Mary, Domestic AIR Tests in Oulton, Domestic AIR Tests in Oundle, Domestic AIR Tests in Outwood, Domestic AIR Tests in Overbury, Domestic AIR Tests in Oxford, Domestic AIR Tests in Oxted, Domestic AIR Tests in Oxton,