Roger points out the problems with building airtightness (also called envelope airtightness) in his latest rant.

Further reading.

▶ Building airtightness:
https://en.wikipedia.org/wiki/Buildin...

▶ What is Airtight Construction?:
https://elrondburrell.com/blog/passiv...

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#Airtightness #Ventillation #AirtightConstruction

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