Guy at the hardware store made me rethink my spray foam plan

I was loading up on cans of Great Stuff for sealing gaps in my attic, maybe 8 or 9 of them. Old dude in the aisle just goes 'you know that stuff offgasses for weeks if you use too much'. I almost said 'mind your business' but stopped myself. He was right though, I looked it up later and yeah, thick layers trap moisture and can rot wood. So now I'm using backer rod and caulk for bigger gaps. Has anyone else had a stranger give them advice that actually saved a project?

3 comments

3 Comments

riverreed20d ago

Honestly wonder how much of that is just scare tactics from old-timers who think every new product is poison lol. Used Great Stuff in my last place and never had any rot issues.

wendy_jackson7d ago

Yep totally agree with @thea_mitchell20, steel wool first then foam keeps the mice out for good.

thea_mitchell2020d ago

Haven't heard anyone talk about the mice yet though - they love chewing through spray foam and can squeeze right through it?