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phrobot t1_ixbf5yc wrote

Reply to comment by fangelo2 in Any tricks to getting this stuff off my basement walls? by repstein26

If you keep it wet, you won’t get much dust. But wear a respirator just in case. Then use oil based primer to cover any stains - I like Zinsser 123. Oil primer is super stinky, so again, protect your lungs, but it will cover and stick better than water based.

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crankshaft123 t1_ixbfvoo wrote

Zinnser 123 (the original formula) is white pigmented shellac. It is not oil based. That said, it's my go-to primer in most situations.

I'm not sure if it's appropriate for OP's block wall. He should probably consult the manufacturer before using it. Or at least read the label on the can.

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phrobot t1_ixbfukl wrote

On second thought, you could also just texture over the whole wall. Maybe mix water primer thick with drywall mud, and roll it on. You probably want to remove the electric box first. Depends on how thick the existing gunk is, but just covering might be way easier.

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