I'm renovating my basement in Long Island, NY, where there's a solid wall that's partially below and above grade. I'm planning to remove the outdated wooden paneling and add insulation, specifically spray foam using a Froth-Pak or something similar. My question is: Should I put a vapor barrier in front of the spray foam, especially since there's a window in that wall?
2 Answers
If you're not dealing with significant moisture issues already, a little bit of dampness in the concrete blocks shouldn't be a major concern. They typically stay somewhat wet. Still, for a DIY project, I'd go with rigid foam instead of spray foam packs. They're easier to manage and usually more effective!
Thanks for the tip! I feel more confident going with rigid foam now.
Before you start with the spray foam, make sure you have proper water management set up on the outside of your basement wall. If water isn't draining away properly and you seal up the inside with foam, any moisture could get trapped in your wall, which can lead to bigger problems. I wouldn't recommend spraying the foam directly on the wall; rigid foam boards might be a better option for you. Definitely consider consulting with a local engineer for advice on this!
Agreed! And if moisture is an issue, it's better to be safe than sorry. Definitely look into the drainage first.
I think rigid boards are a solid choice too, especially for DIY. Less messy than spray foam!
Good point about the moisture. It should be manageable as long as you're proactive about drainage.