What is air tightness and why is an airtight building important?

Published on 26 July 2024 at 15:57

Airtightness primarily involves eliminating all unintended gaps and cracks in a building’s external envelope.

Airtightness is essential to creating a healthy, comfortable, and energy-efficient living environment. In contrast, air leakage occurs when gaps and cracks are present that should not have been there in the first place.

In simple terms, you have heated the warm air inside your building, or it has been passively heated by the sun’s energy. You want to retain this warm air inside as much as possible and prevent cold air from infiltrating. When properly installed, an air-tightness membrane acts like a balloon’s skin, retaining this warm air inside your home.

Using an airtightness membrane alone does not guarantee airtightness—it requires careful attention to details and sealing around penetrations, particularly those passing through the building’s thermal envelope.

At Quinn Offsite, all our designers are accredited Passive House Design Consultants, all our workshop teams have been extensively trained in passive house and Near Zero Energy Buildings theory, and we exercise tight quality control in all aspects of the build to ensure optimum performance in service

Call us today for advice backed up by experience at +44 (0) 28 8673 7655