During the TightVent-AIVC webinar Building airtightness improvements of the building stock- Analysis of European databases held on 19 January 2021, Barry Cope, the CEO of the Building Compliance Testers Association (BCTA) provided an analysis of the ATTMA (Air Tightness Testing & Measurement Association) airtightness lodgement Database. Significant amounts of data gathered from 2015 to 2020 were presented in charts, showing the lodgement count by month (dwellings, non-dwellings), the average air permeability by year (AP50, dwellings), the percentage of construction type (dwellings), the construction type and average air permeability (dwellings), and the ventilation type by year.

If you would like to gain detailed information on ATTMA’s airtightness database, click HERE to view the recorded presentation on our YouTube channel and HERE to download the slides.