I moved into a house two years ago that has drainage issues and poor soil. After cleaning the gutters and making a few improvements like regrading the yard and adding gravel around the foundation, I've seen some positive changes, as there's no more water pooling around the exterior. However, I'm still facing a problem with efflorescence on the interior cinder blocks of my garage. There was some present before we made these improvements, but it's become more noticeable after the last winter. I'm really confused about why this is happening and what I can do to remove it without damaging the cinder blocks. I've tried using a dry brush with no success. Any advice?
1 Answer
It sounds like the moisture problem may still be coming from outside, which is why the efflorescence keeps returning after you clean it. You might want to consider waterproofing the exterior properly. To clean it off, you can use an acid wash. Something like muriatic acid diluted with water or a store-bought efflorescence cleaner should do the trick. Just apply it, scrub with a brush, rinse, and let it dry!

Will that damage the cinderblock, though?