I have a lot of efflouresence on one of my walls in the basement. I recently applied Dryloc Etch to remove it. It looked like I got it all off. When I went down the next morning, it was on the walls again. Can efflouresence form that quickly or is it more likely that I didn't get it all off? I plan on painting the walls with Dryloc so I need to get it off. What else is effective at removing this stuff?
Also- does anyone know a ball park figure on digging a trench and applying tar to that wall (to waterproof the outside)? The depth would be about 3-4 ft and the width of that wall is about 30 feet.
Thanks for your help!!
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