How to Kill Mold on Drywall: Quick and Easy DIY Solutions
Mold on drywall is a common problem in many homes. It can pop up in damp areas and spread quickly if not dealt with. While it may look gross, there are ways to get rid of it.

You can remove small amounts of mold from drywall using household items like vinegar, baking soda, or detergent mixed with water. For bigger mold problems over 10 square feet, it’s best to call in the pros. Before cleaning, it’s key to fix any leaks or moisture issues causing the mold growth.
Getting rid of mold isn’t just about looks. Mold can cause health issues like allergies and breathing problems. It can also damage your home if left unchecked. Taking care of mold early helps keep your home and family healthy.
Understanding Mold on Drywall
Mold on drywall is a common problem in homes. It can grow quickly and cause damage if not dealt with. Knowing what to look for and the risks involved is key.
Identifying Mold and Its Causes
Mold on drywall often looks like dark spots or fuzzy patches. It can be black, green, or other colors. Common causes include:
• Water leaks from pipes or roofs
• High indoor humidity
• Poor insulation leading to condensation
• Flooding or water damage
Mold likes damp, dark places. Bathrooms, basements, and areas near windows are prone to mold growth. Look for musty smells or discolored walls.
To find the source, check for leaks or moisture issues. Fix these problems to stop mold from coming back.
Health Risks and Types of Mold
Mold can cause health issues, especially for people with allergies or breathing problems. Common symptoms include:
• Coughing and wheezing
• Itchy eyes and skin
• Headaches
• Tiredness
Black mold, or Stachybotrys chartarum, is often talked about. It’s not always more dangerous than other types, but it can look scary.
Different molds can grow on drywall. Some common types are:
• Aspergillus
• Penicillium
• Alternaria
Mold spores float in the air and can spread easily. This is why it’s important to clean up mold quickly and fix the underlying cause.
Effective Mold Removal Strategies

Removing mold from drywall takes careful planning and the right tools. These steps will help you get rid of mold safely and stop it from coming back.
Preparation and Safety Measures
Put on protective gear before you start. Wear gloves, goggles, and an N95 mask to avoid breathing in mold spores. Cover the floor with plastic sheeting to catch debris. Open windows for good airflow. Turn off your AC to prevent spreading spores.
Use a HEPA vacuum to clean the moldy area first. This traps loose spores. Seal off the work area with plastic sheets to keep mold from spreading to other rooms.
If the mold covers more than 10 square feet, think about calling a pro. Large mold problems can be tricky and dangerous to handle alone.
Choosing the Right Cleaning Agents
Pick a cleaning solution that kills mold. Bleach works well but can damage some surfaces. Mix 1 cup of bleach with 1 gallon of water.
Vinegar is a safer option. Use it full strength in a spray bottle. It kills most mold types.
For a gentler cleaner, mix baking soda with water to make a paste. This is good for scrubbing.
Hydrogen peroxide is another choice. Use a 3% solution right from the bottle.
Test your cleaner on a small spot first to make sure it won’t harm the drywall.
The Cleaning Process
Spray your chosen cleaner on the moldy spots. Let it sit for 15 minutes. This gives it time to kill the mold.
Scrub the area with a brush. Don’t soak the drywall. Too much water can damage it.
Wipe away the mold and cleaner with a damp cloth. Use clean water to rinse.
Dry the area completely with a fan or towels. Mold loves moisture, so get it bone dry.
For tough spots, you might need to repeat the process. If mold has gotten into the drywall, you may need to cut out and replace that section.
Preventing Future Mold Growth
Fix any leaks right away. Mold needs water to grow. Check pipes, roofs, and windows for drips.
Keep humidity low. Use a dehumidifier in damp areas like basements. Aim for 30-50% humidity.
Run bathroom fans during showers and for 30 minutes after. This removes moist air.
Clean up water spills fast. Don’t let carpets or walls stay wet.
Use mold-resistant paint in bathrooms and kitchens. It helps stop mold from growing on walls.
Check hidden spots like behind furniture for mold. Catching it early makes it easier to clean.