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!!
first,one has to stop the moisture/dampness from the outside. Then it`s possible to rid the efflorescence.To hand dig 3-4` X 30` trench,haul away all dirt,scrape & wire brush entire wall,seal any cracks/openings with hydraulic cement,apply 'thick' grade tar with 6 mil visqueen and backfill with 100% pea-stone would be $2,100 and take 1 day to complete.Also...look for other 'direct' openings such as open mortar joints,loose-cracked bricks,openings around any windows,light fixtures,doors etc. and seal `em. Are you sure the depth is 3-4` to the footing? GL!