Before you can begin the mold removal process, you must give your concrete basement walls a thorough cleaning. Begin this step by combining warm water with a mild brand of soap. Next, pour the newly formed cleaning solution into an empty spray bottle and proceed to vigorously apply it to your mold-laden basement walls. You'll now need to use a sponge or scrub brush to wipe the walls clean, taking care to fully purge any caked-on dirt deposits. Any remaining dirt or debris stands to cause problems when the mold removal process is underway, so when performing this step, take your time. Once your walls have been sufficiently cleaned, you'll be ready to move on.
Step 2 - Apply Your Bleach
Now that your wall is nice and clean, you're ready to begin removing the wall-based mold. Begin by filling a clean bucket with one cup of bleach and one gallon of warm water. As many people find the potent fumes emitted by commercial bleach to be overpowering, it is important to take the proper precautions when working with it. Before beginning mold removal, put on a breathing mask, protective eye wear, and a pair of protective gloves. In addition, make sure to perform the job in a well-ventilated area and make a point of taking breaks, preferably outdoors, in the event that you feel yourself becoming lightheaded.
You'll now need to use a hard bristle brush to vigorously apply your homemade mold remover to any infected areas of your wall. Wall-based mold can be quite stubborn, so you may be required to put forth a steady amount of elbow grease. Depending on the size and severity of the mold deposits, this process may take anywhere from several minutes to several hours to successfully complete. After the mold has been scrubbed off your concrete walls, allow your mold remover to sit for 15 to 20 minutes before proceeding to dry your walls.
Step 3 - Apply Your Finishing Touches
Having rid your basement walls of mold, you're almost finished. You'll now need to fully dry the freshly cleaned walls with the aid of a clean cloth. When performing this final step, take care to be as thorough as possible. Dampness and moisture are among the leading causes of mold formation, so it is in your best interest to keep your basement walls completely dry.
After drying off your walls, make sure that your basement receives proper ventilation and that its humidity levels are kept firmly in check. Additionally, be sure to periodically check your basement's pipe fixtures for any signs of leakage. These precautionary measures will go a long way in keeping your basement's walls mold-free.