How do you clean concrete basement walls?
Mix together 1 gallon of water and ½ cup of chlorine bleach if the walls have mold or mildew. After scrubbing the walls as directed earlier, scrub them again, this time with a stiff scrub brush and the bleach solution.
How do you clean interior concrete walls?
Using a mixture of vinegar and water, you can clean your concrete floor or walls. The difference between a vinegar plus water mixture and a bleach plus water mixture is, while using bleach and water, you can spray and clean almost immediately but for vinegar and water, you have to let it sit for a little while.
What can I clean concrete walls with?
Cleaning Its Surface
For indoor walls and other painted surfaces, use a paint scraper and wire brush to remove old paint and dirt then scrub with soapy water or tri-sodium phosphate (TSP). For concrete floors, especially in the garage, sweep and vacuum, and clean with TSP to remove any oil or grease.
What is the black stuff on my basement walls?
Dark stains
Dark black or grayish stains on the wall are a sign of mold. Mold thrives in the presence of high humidity, warmth, and organic matter, on which it feeds. It’s always warm enough in your home for mold to grow, even in the cold basement, and household dust carries enough organic matter to feed it.