I'm renovating a 1901 house, detached wood frame with stone foundation. We are creating a ~1500SF owner's duplex on the 2nd floor and former attic. The basement...
...airtightness levels, you can see a video of it here – How to install air barriers properly to make a house airtight – DIY video As for ERVs, installing a high...
...airtightness or R value. We would be happy to help but as is there are too many questions in here and it would be difficult to really iron out any of your indiv...
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