Skip to main content

Air Tightness Testing / Air Sealing

Air Tightness Testing (also referred to as Pressure Testing or Air Permeability Testing) is a requirement of Part L1A & L2A of the Building Regulations for newly built Domestic and Commercial Buildings.

Air Tightness Testing measures the amount of uncontrolled air flow (also known as air leakage) within a building as a result of unsealed gaps or cracks within the thermal envelope

Why choose DWC Group?

DWC Group offer a Nationwide Service.  Our Technicians are authorized to undertake air pressure testing on new buildings in accordance with ATTMA TSL1 Measuring Air Permeability of Building Envelopes (Dwellings) and ATTMA TSL2 Measuring Air Permeability of Building Envelopes (Non-Dwellings)

We are able to help with the step by step build process of each project by assistiing site with incormoporating good working practices in the site construction strategy assisting with internal and external penetrations schedules, envelope penetrations, standard and typical details on penetrations on fire and external perimeter walling and assistance with interfacing all works on site to create a build model and schedule ensuing all penetrations recorded. We would recommend a comfort test of the individual rooms before ceilings are installed inorder to highlight any defects in construction which would effect the air tightness test.