Airtightness in retrofit is important for avoiding heat loss as it means less air leakage or draughts. Upto a third of energy in a home can be lost through draughts. Also, where air moves through a house, it takes moisture laden air with it which can cause interstitial condensation and mould.
If designed well, homes retrofitted to be airtight are warmer, more comfortable and free from both draughts and condensation. They are also future-proofed against the extreme weather events promised by climate change. Airtightess can improve health by preventing substances that can provoke allergies being carried into the building via air leakage. It can also result in better sound insulation within the home.
This airtightness in retrofit talk is by Paul Jennings of Aldas. The hour long webinar is on Wednesday 29th September starting at 1700. Paul will discuss airtightness in retrofit for around 30 minutes and then there will be an opportunity for questions.
Airtightness in retrofit outline:
- Air leakage
- Importance of airtightness
- Outline of an airtightness test
- 12 steps to airtightness
- Common defects
Airtightness in retrofit speaker biography:
Paul Jennings of Aldas is the most experienced airtightness tester and consultant in the UK, with over 30 years’ experience. He is a member of the Association of Environment Conscious Building (AECB) for over 15 years and a Trustee for much of that time. He is also a Director of the UK Cohousing Network.
Paul is an experienced trainer and originated the “Airtightness Champion” concept, as well delivering numerous on-site trainings and many CPD seminars to architects and builders. He developed the "12 Steps to Airtightness" approach to enable UK contractors to reliably deliver airtightness in Passivhaus and other low-energy projects. Paul has been involved in most of the PassivHaus projects in the UK one or more capacities.