JBurd
New member
A homeowner is having me strip their basement walls because they had been painted and water was seeping through (they were not properly sealed). I am facing two problems on stripping these cinder blocks. 1. some of the walls (see pic 1) have some sort of primer or sealer that I can't strip 2. the walls that all fo the paint did come off of (see pics 2 and 3) have some white stuff near the bottom of the blocks. it is where the water seepage was evident before the paint was stripped.
I've experimented with taginator, a wire brush, 3000 psi 5.5 gpm with turbo nozzle and mustiatic acid 3 to 1.
What is this stuff? How do I get it off? the main concern is the stuff from pic 1.