How do I remove old drylok?
You might want to consider speaking with drylok representitives to find out how to remove the product safely. It contains Silica which is extremely toxic in dust form. The products has warnings regarding it on the label. I'm considering using it on my basement fieldstone and my only reservtion is the possibilty of having to remove it if it fails. Or having someone else get sick trying to remove it in the future. I'm sure it's inert when its on the wall, just not so sure about any dust/debri created from sanding or grinding or chipping. Good Luck.