Technical Standard L4. Measuring air permeability in Passivhaus and low energy buildings - fan pressurisation method. September 2021 issue
Publication Year
2021
Document Status
Withdrawn
Abstract
Technical standard for the airtightness testing of buildings as part of a Passivhaus or low energy design.
Document History
Superseded by Issue 2.0.1, June 2023. Issue 2, September 2021.
Publisher Information
Air Tightness Testing and Measurement Association
The Air Tightness Testing and Measurement Association (ATTMA) is a professional association, formed in 2002, to promote technical excellence and commercial effectiveness in air tightness testing and air leakage measurement applications. It is also a Department for Communities and Local Government (DCLG)-appointed operator of a Competent Persons Scheme for air-tightness testing.
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