L1 Residential - Air Leakage Testing of Dwellings

BAT are accredited by UKAS to carry out air leakage tests to dwellings in accordance with ATTMA TS1 L1. We have the equipment and knowledge to test any type of dwelling including passive houses and 'Code for Sustainability' houses.

We don't walk away from failures...

All of BAT staff pride themselves on being as helpful as possible. Should your building initially fail we do not pack up leaving you to deal with the problem on your own. We endeavour to assist you in finding the leakage paths and retest at no extra charge.  

Our accreditation by UKAS and ATTMA membership means that you can be assured that all of our staff, equipment and procedures will provide you with a result you can trust is accurate. If you are building apartments or semi-detached properties please see our acoustic section as you may require our acoustic test services.

Energy Performance Certificates Design stage and pre-completion SAP calculations can also be prepared by BAT to optimise constructions to achieve Building Regulations compliance for Part L1.

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