When is Air Tightness testing required?

If you are building a new domestic property or commercial property of a certain size, it will need to undergo air tightness testing. This assesses the building for ‘air permeability’, checking for air leakage through gaps, holes and other areas. The Government has SAP (Standard Assessment Procedures) in place for air tightness testing, setting standards buildings must comply with to be energy efficient.

When do I need to consider air tightness testing?

If you are building a new residential property we would recommend talking to us about air tightness as soon as possible. The Falcon Energy team are fully qualified in air tightness testing and are also affiliated to IATS, the Independent Airtightness Testing Scheme.

With our experience, we are able to advise you on air tightness and building design prior to the build, as well as during the build itself. We can help you establish how many units on your new homes development require testing and can liaise with Building Control to establish a testing schedule.

Which properties need air tightness testing?

Residential properties and those over a certain size (500 m2) must undergo air tightness testing. Small developments of one or two properties must have one of the buildings undergo air tightness testing. However, if the properties are of different construction then both must be tested separately.

With larger developments, a proportion of the buildings must be tested, depending on the size and construction of the properties. There are exceptions to this and if you have any questions regarding how many need to be tested or about the exceptions, please contact us and we will be happy to help.

At what point in the build is the air tightness test carried out?

Falcon Energy will carry out air tightness testing when the following elements of the build have been completed. The SAP also needs to have been completed as this sets the target for the air tightness test.

  • The walls are finished and have been plastered or decorated.
  • The internal and external doors are fitted and fully operational.
  • The windows are fitted and the glazing is complete.
  • If applicable, the loft hatch has been installed and sealed.
  • The kitchen and bathroom have been installed.
  • All skirtings, sockets and light switches are fitted and complete.
  • The door frames, windows, skirtings and services have had sealant applied to prevent air leakage.

When we carry out the test the windows will need to be shut, trickle vents must be closed and traps will need to be filled with water.

Why is the air tightness test important?

New properties are tested for air tightness as buildings which meet the required standards have an efficient airflow, meaning less energy is needed to heat the property. This reduces the energy bills for the home, lessens the carbon footprint and reduces CO2 emissions. Not only does it mean the property meets Building Regulations, it is also environmentally friendly.

How can Falcon Energy can help you?

Our expert team can advise you on your domestic or commercial building project, whatever the size, right from the start of the project. We work across the UK with architects and builders to ensure your properties achieve the required air tightness standards.

For a free, no obligation quote on air pressure tightness testing for your residential or commercial property, or to simply discuss your requirements, call us now on 01403 253439 or email info@falconenergy.co.uk. Alternatively, fill out our contact form here and a member of the Falcon Energy team will be in touch.

Posted in Air Tightness Testing.