Privacy describes the perceived sound reduction across a wall, a function of both sound insulation and background noise...more
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
Bristol - Air Tightness Testing - 0117 212 0189
The office that covers this area is: Cardiff
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.
Employees can still do their job inside a commercial building in Bristol, 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 Bristol.
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.
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.
Planning your test in advance will help our experience air assessment team covering Bristol 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.
How Many Properties Need An Air Tightness Test?
If you have 4 or less properties of the same type then only one test needs to be undertaken per type. If you have more than 4 but less than 40 dwellings of a type then you need at least two tests to be done on each type. Finally, if there are more than 40 properties of a particular type then at least 5% of each type needs to be tested UNLESS the first 5 get a passing score - then this can be dropped to just 2%.
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 Bristol 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 Tightness Testing information for your area, be sure to check out Air-Testing-Bristol.co.uk.
Our other services include:
Environmental Noise, SAP Calculations (TER/DER), Thermography, Energy Statements, Part G - Water Calculations, Code 4 Sustainable Homes, Sustainability Statements, Part F Ventilation Testing, SAP Extension Calculations, SAP Conversion Calculations, Part E, On Construction EPC, Acoustic Testing,
Air Tightness Testing can also be known as:
Domestic Air Leakage Testing, Air Testing, Air Integrity Testing, Domestic Fan Pressure Testing, Fan Pressure Testing, Domestic Air Tightness Testing, Domestic House Leakage Testing, Domestic Air Integrity Testing, Air Pressure Testing, Domestic Air Pressure Testing, Air Leakage Testing, House Leakage Testing, Domestic Air Testing,
Copyright 2019 E2 Specialist Consultants Limited
Company No. 06728970