I've got an old 1953 basement that I want to finish. The walls are in pretty good shape. Looks like the previous owner used drylok. Some areas show some signs of staining, and efflorescence.
Can I use a wire brush to remove the bad spots, and put a cost or two over the existing drylok? Btw…basement is dry.
Best Answer
Yes, drylok can be recoated easily. Depending how bad (or not-bad) the spots are, you might think about whether the super-thick "masonry waterproofer" or the "concrete floor paint" is more appropriate. If staining appears to indicate leaks, probably the thick stuff.
Ease of re-coat is one of several reasons the concrete floor paint is on my shop floor rather than some fancy epoxy product. 5-6X cost differential and not being slippery (without having to add some surface treatment) are two of the others that spring to mind. And, of course, not being gray concrete...