If you want your tiles to live longer, you need to take a good care of it. The good news is that mold can easily be cleaned from the non-porous surfaces of tiles. Rugs or carpets that aren’t wall to wall, permanently-fixed carpeting can be cleaned to remove mold. Cleaned out the under of a leaky sink, use it to kill mold in the shower, etc. Totally recommend! Never use drywall as an underlayment in high-moisture areas. The drywall needs to be carefully removed and disposed of and all of the areas behind the wall must be treated or removed. You must repair the cause of the leak or mold and mildew will eventually reform over the new drywall. Then use Kilz to paint over the old surface. Use a tape measure to measure out the length and width of the new section of drywall that you’ll need so that it will fit properly.
You have to remove the affected section (don’t stop until the backside/outside surface is clean!) and replace. I’d cut the section out and replace it. There’s a product called “foster’s 4020” that my environmental guys would use to wash down trusses and other stuff that we didn’t cut away when doing water intrusion remediation back when I worked for centex. We always cut the affected drywall back because it’s generally easy enough to replace but I’m sure you could use it on the gypsum as well. I personally would use bleach and ventilation. Bleach. I would suggest just using soap and water. Drywall is prone to staining by water seeping from the ceiling. I took time to address the problem and some mold is now visible on the drywal surface on the ceiling. Test the ceiling with your fingers. That is when you need to remove the drywall, scrub everything down, let dry, replace the air filters for your AC! Scrub the surface mold stains from walls and wood trim with a mixture of 1 qt.
A mixture of Borax and a very small amount of water to get it to be just tacky enough not to be a powder and a sponge. However, if there was a small leak and you decided to put it off for a while which led to the growth of the mold, the insurance company might deny your claim based on negligence. I work at a small hardware store. Drywall work is incredibly easy. It sucks but the OP is going to repaint anyway so it’s not that much more work than the paint prep itself. This problem can get much worse if left alone and even if it doesn’t end up causing a health risk will significantly affect resale value. Mildew and mold are both fungi, and because they grow and spread by sending their spores through the air, they can both affect the health of everyone in the home.
We are forbidden from using bleach on anything for the health of our patients. Household mold and mildew are common invaders in basements, especially in the presence of water damage, sump pumps, or other moist conditions. What’s The Difference Between Mold and Mildew? Peroxide is an excellent option not only for mold removal but to get rid of other types of stains, as well, especially for how to clean white walls that may have mold or mildew. If you have hardwood floors, make sure not to use too much liquid cleaner or water. Well, there is one that allows everybody to obtain the same professional strength grout and tile cleaning products as the big name companies use. Below given are some of the amazing benefits that you can gain by hiring professional tile cleaning services. On average, professional mold remediation costs $500 to $6,000 with most homeowners spending between $1,500-$3,150 or $15 to $31 per square foot. How much does mold remediation cost per square foot? Form my experience mold on the inside of the house from a roof leak means a much worse problem inside the wall/attic. Be careful though, you can easily ruin it by adding to much from one of the ingredients.