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
The Decibel Scale
Gives an approx of human perception of loudness. This is because the human ear has a logarithmic response to changes in sound level...more
Stratford - Air Tightness Testing - 020 3390 0301
The office that covers this area is: London
Do I Need An Air Leakage Test?
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.
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.
We offer air leakage testing throughout Stratford 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.
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.
What Does An Air Leakage Test Involve?
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.
During an air test in Stratford 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. Furniture will not be affected during the test, but smaller items such as paper must be held down or removed completely so they're not blown about.
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 Stratford. 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 Stratford 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.
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%
For further Air Tightness Testing information for your area, be sure to check out Air-Testing-London.co.uk.
Our other services include:
SAP Extension Calculations, SAP Conversion Calculations, SAP Calculations (TER/DER), Environmental Noise, Energy Statements, Thermography, Sustainability Statements, Acoustic Testing, Part E, Code 4 Sustainable Homes, Part G - Water Calculations, Part F Ventilation Testing, On Construction EPC,
Air Tightness Testing can also be known as:
Domestic Air Integrity Testing, Domestic Fan Pressure Testing, Air Testing, Domestic Air Testing, Air Pressure Testing, Fan Pressure Testing, House Leakage Testing, Domestic House Leakage Testing, Air Integrity Testing, Domestic Air Pressure Testing, Air Leakage Testing, Domestic Air Leakage Testing, Domestic Air Tightness Testing,
Copyright 2019 E2 Specialist Consultants Limited
Company No. 06728970