Had the same debate when I redid my 1920s basement. Ended up using rigid foam too—mainly because I’ve had to chase leaks before and tearing out spray foam sounded like a nightmare. Not perfect, but at least I can see what’s going on if water sneaks in.
I hear you on the spray foam—once it’s in, it’s like trying to remove a stubborn barnacle from a ship hull. I went with rigid foam too, mostly because I’ve got a 1915 foundation that likes to “weep” when it rains sideways. At least with rigid, I can pop a panel off and check for trouble. Not the prettiest solution, but hey, neither is a flooded basement.
At least with rigid, I can pop a panel off and check for trouble. Not the prettiest solution, but hey, neither is a flooded basement.
Couldn’t agree more—function over form, especially with old houses. I’ve seen too many folks regret going all-in on spray foam when they find a leak years later. Rigid might not win beauty contests, but it sure saves headaches down the line. Sometimes you just have to pick the battle you can actually win.
Totally get where you're coming from. I’ve done the math on spray foam vs rigid, and honestly, the upfront cost of spray foam just doesn’t make sense for me—especially if there’s a chance I’ll have to rip it out to deal with water issues later. Rigid panels aren’t exactly pretty, but at least you can pull them off and see what’s going on behind the scenes.
One thing I wonder about, though: has anyone actually had luck sealing up rigid panels well enough to keep moisture out in the first place? I’ve tried taping seams and using caulk, but it always feels like water finds a way in eventually. Maybe that’s just the reality of old basements... Anyway, I’d rather have an ugly wall I can fix than a hidden mess that costs thousands down the road. Guess it comes down to how much hassle you’re willing to deal with versus how much you want things to look nice.
Honestly, I think you’re onto something with the “ugly but fixable” approach. I’ve seen too many horror stories where people went all-in on spray foam, only to discover a hidden leak years later—by then, the damage is way worse and way more expensive to fix. At least with rigid panels, you can pull them off and actually see what’s happening.
That said, I’ve had mixed results trying to seal up rigid panels too. Tapes peel, caulk cracks, and if your foundation’s got any movement at all, forget about a perfect seal. Sometimes I wonder if we’re fighting a losing battle trying to make old basements totally watertight. Maybe it’s more about managing moisture than eliminating it? I’ve started focusing more on drainage outside and using vapor-permeable barriers inside, so if water does get in, it can dry out instead of getting trapped.
Curious if anyone’s tried those mineral wool boards instead of foam? They’re not as easy to work with, but I’ve heard they handle moisture better and don’t trap water the same way. Wondering if that’s a better long-term play for flood-prone spots...