Air Pressure Testing – Why?
Air Tightness Testing became a statutory requirement under Part L of the Building Regulations in April 2002. There have also been updates of Part L in 2006, 2010 and 2013 which came into effect.
New dwellings that are constructed and require Planning Consent and Building Regulation Approval must comply with Part L of the Building Regulations.
What is Air Leakage?
Air leakage is the uncontrolled flow of air through gaps and cracks in the building fabric of a building. (Sometimes known as Infiltration or Draughts).
This is not to be confused with Ventilation, which is the controlled flow of air into and out of the building through purpose built in ventilators that are required for the comfort and safety of the occupants. Too much air leakage leads to unnecessary heat loss and discomfort to the occupants from cold draughts.
Why is Air Leakage important?
Air leakage in dwellings through cracks around doors, windows, service entry points and simply poor construction sealing of the dwelling, leads to higher Energy bills. Our heating systems within houses produce CO2 emissions which are a Greenhouse Gas and contribute to global warming.
Reduced air leakage results in reduced heating energy use and saves money and the effects on the planet.
The purpose of reducing air leakage is to reduce CO2 emissions, reduce heating bills and improve occupant comfort.
Testing and Standards.
The testing of dwellings is carried out by Approved and tested individuals / Companies.
The UKAS Accreditation scheme is administered by the British Institute of Non-Destructive Testing (BINDT) with Technical guidance provided by the Air Tightness Testing and Measurement Association (ATTMA).
Testers are individuals / companies that are registered with BINDT and operate in accordance with a strict code of conduct and BINDT Approved Quality Procedures.
We are pleased to confirm that we are registered with BINDT for the Testing and Certifying of Dwellings.
What Standards are to be achieved?
The maximum Air Leakage rate acceptable under the Building Regulations Part L is currently a leakage rate of 10 m3 / (h.m2 ) @50Pa. This level is the same across all of the 2006, 2010 and 2013 versions.