I have a wall in the basement thats cracked, and lets in water during heavy rains. I see all sorts of products on the market for waterproof patching, everything from concrete patch, to crystalization products to resins and an assortment of goops and putties. Just wondering, through other peoples experience, what is a good (or not so good) product.
If the crack is ever dry, something as simple as urethane caulk might work. But most caulks require the field to be dry. You need to fill the crack with something that never fully hardens, that will breath with the crack.
If you've done the exterior, "keep the water away" regimen. grading, leaders and gutters, etc., you can try hydraulic cement on the interior or you can expose the foundation outside and apply a water proofing system.
The exterior job will cost more and last longer. I've done interior hydraulic cement and they last for 7-8 years.
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."
B. Franklin 1759