Two parameters describe sound insulation; Dw and Rw. Dw is the insulation between rooms. Rw is the lab-tested insulation of a wall/floor...more
Sound intensity's measured in Decibels (dB). An logarithmic scale where an increase of 10 dB gives an apparent doubling of loudness...more
Downham Market - Air Testing - 01733 600 149
The office that covers this area is: Peterborough
Do I Need An Air Leakage Test?
Planning your test in advance will help our experience air assessment team covering Downham_Market 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.
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.
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.
What Does An Air Leakage Test Involve?
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.
There should be no outside access once the test has begun for approximately 90 minutes so plan accordingly. Workers can still do their job inside the property, within reason, though may feel some discomfort due to the noise of the fan and the draught that will be felt throughout the building.
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 Downham_Market. 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.
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.
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 Downham_Market 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-Peterborough.co.uk.
Our other services include:
SAP Conversion Calculations, Sustainability Statements, On Construction EPC, Code 4 Sustainable Homes, Part E, Thermography, Acoustic Testing, Part G - Water Calculations, Part F Ventilation Testing, Environmental Noise, Energy Statements, SAP Extension Calculations, SAP Calculations (TER/DER),
Air Testing can also be known as:
Domestic Air Tightness Testing, Domestic House Leakage Testing, House Leakage Testing, Domestic Air Leakage Testing, Fan Pressure Testing, Air Integrity Testing, Air Leakage Testing, Air Tightness Testing, Domestic Fan Pressure Testing, Domestic Air Testing, Domestic Air Pressure Testing, Domestic Air Integrity Testing, Air Pressure Testing,
Copyright 2020 E2 Specialist Consultants Limited
Company No. 06728970