If you follow the blog, you know I did some leak testing (
DIY Home Pressure Test Results | EcoRenovator.org) and found some disturbing things. The first thing is there are HUGE gaps around my window trim upstairs. Combine that with the hollow walls and we're talking pretty crazy air infiltration. I don't know how I didn't catch this sooner.
Anyway, I've started sealing them all up and then some. I'm also adding additional stick on weather stripping to the bottom of the windows. A few of them are not perfectly square and don't seal well against the sill at all.