How to deal with moisture trapped behind basement Drylok paint
Basement walls painted with Drylok trap moisture behind the coating, leading to efflorescence, staining, and long-term foundation risks. Because exterior excavation isn't always possible, homeowners are left trying to remove the paint so the wall can breathe and prevent structural damage.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
How to deal with moisture trapped behind basement Drylok paint
- 1Running a dehumidifier on a schedule or running a dehumidifier and fans 24/7Did this help you?
- 2treating pests, repairing damaged framing, and considering raising the exterior gradeDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Previous owner painted basement walls with drylok. Lots of efflorescence and staining.”source ↗
“Ideally I’d to remove the drylok and lime wash so the wall can breathe, but I wonder if I’m worrying about it excessively?”source ↗
“Would rather have a dank basement than foundation problems in the long run. Guess I’m hoping for someone to explain why it’s fine even though I know it isn’t lol”source ↗
Where this came up
People with this problem also raised
- 3Why is the paint on my bathroom ceiling peeling?
- 2Why are my bathroom walls wet and brown after a shower?
- 2Best way to fill holes in concrete before painting
- 7Why is there a wet spot on my wall every morning?
- 5Why is my basement wall paint peeling and turning white?
- 5Why is there condensation and damp spots on walls only on laundry days?