Andy Hinson
New member
Maybe you missed this post. I dont care if u use straight SH. It will still be there. Also even when it is clean there will still be shadowing du to the morter has been in this krud for so longI had a contract to clean some old housing units. Brick ,roofs,concrete. the mortar had a heavy black encrustation that I figured I could hit with a strong mix and it would be a breeze to clean. Not so lucky. In most areas it didn't phase it and required pressure to remove