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What is airtightness – and can a house be too airtight?
By Neil Turner
Friday 20th March 2026
Also in category: House insulation
If you’re planning to invest in improving the energy efficiency of your home, airtightness is a vital concept to get your head around. When done correctly, improving airtightness can boost the performance of your insulation and help you create a warm, comfortable environment.
There are a lot of myths and misunderstandings surrounding airtight construction methods; however, in this post, our airtightness expert Neil Turner breaks down the key concepts into easy-to-understand bites.
Blog author
Neil Turner
UK Technical Manager (BSc Hons)
Neil Turner is Technical Manager at Ecological Building Systems. A former competent person of the BBA/TIMSA U-Value and Condensation Risk Calculation Competency Scheme, who has been involved in developing CEN (Comité Européen de Normalisation) European standards, Neil has extensive experience in the building products sector. Neil advises architects, contractors and timber frame specialists on the specification of sustainable insulation products and has been involved in numerous sustainable projects throughout the UK.