DOMESTIC AIR TIGHTNESS TEST & AIR PRESSURE TESTS
ATTMA ACCREDITED. AIR PRESSURE CERTIFICATES PROVIDED
All our house air leakage test procedures are conducted in accordance with ATTMA (The Air Tightness Testing Measurement Association) standards. We aim to improve the energy efficiency of your building at the most affordable market rates going. We provide testing nationwide, so whether you need an air tightness test in Yorkshire, The Midlands, Greater Manchester or London, we guarantee to complete it at an affordable cost.
We recommend getting in touch with us as soon as possible to discuss the details of your air tightness test. This will ensure you achieve the score you are looking for in a timely matter.One of our trained staff members can talk you through all that is required prior to our visit.
What is an Air Tightness Test?
Air Leaking Testing (Commonly referred to as Air Tightness Testing or Air Pressure Testing) is a mandatory requirement for part L1A and L2A building regulations for all newly built houses (Commercial and Domestic).
The main reason for the test is to create a more airtight building which will, in turn, reduce C02 emissions and lead to a reduction in heating costs and unwanted air leakage. Air leakage tests are an important part of SAP calculations, which must be passed for a building to legally be sold.How do you test air tightness ?
Air leakage tests are relatively simple and hassle-free, especially if our guidelines are followed prior to our visit. One of our engineers will place a fan or number of fans to an appropriate opening. This is usually an external door. They will then proceed to take multiple readings at different pressures.
Before the test is completed we will tape all of the ventilation extracts, turn off any HVAC units and ensure all windows and doors have been closed.
The whole procedure should not take more than 45 minutes to complete, after which our engineer will provide you with an air pressure reading. Â
Getting Ready for Air Pressure Testing
If there are works going on in the dwelling during the testing process, please ensure that windows and doors are kept closed during the test and not tampered with.
To give your build the best chance of passing the test, we advise to:
- Check for holes and cracks in the walls and ceilings
- Use sealing around skirting, windows, and piping that leaves the building
- Check for correct insulation of loft hatches
- Install downlights
When our engineers are on-site, they will be able to find where air leakage is occurring within the dwelling and provide the appropriate remedial work to help you achieve the result you are looking for. If there is anything you feel unclear about or you simply want to speak to one of our team members, don’t hesitate to give our office a call.
Â
Completing your
Domestic Air Pressure Test
Purple Energy have a dedicated team of engineers working throughout the country to provide accurate testing and invaluable remedial advice, ensuring you achieve the results you require to pass part L building regulations.
1 Arrival on site
Wind speed, air temperature and barometric pressures will be taken prior to testing. Quick check of building dimensions.
2Building Preparation
Placing fan(s) on an external opening. Close all windows and external doors and tape ventilation terminals.
3 Depressurising
Take depressurised measurements from inside the building. Check for air leakage paths.
4 Certification
Provided verbally to the client once the air pressure test has been completed. Certification will be issued within 24 hours.
If there is anything you feel unclear about or you simply want to speak to one of our team members, don’t hesitate to give our office a call.
Get a Quote
If there is anything you feel unclear about or you simply want to speak to one of our team members, don’t hesitate to give our office a call.
Email us at
Call us on
Contact Us
Frequently Asked Questions
For air leakage testing, the lower the score, the better. Anything between 3 and 5 is a good score, but anything below 3 is really airtight.
The tightness test procedure should not take more than 45 minutes to complete, after which our engineer can provide you with the air pressure reading.
