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How to Fix a Moldy Wall

A mouldy wall is caused by moisture and lack of air flow. These conditions make it inevitable that mould will grow in your home. The moisture can be a result of a plumbing leak or it may be entering the home from the outside.Once you have determined the cause and stopped the supply of moisture, the mouldy wall must be repaired. Fixing a mouldy wall requires some effort, but is worth it to have a wall that does not show the signs of a mould problem.

Pull furniture away from the mouldy wall and open windows in the room to allow air flow. Use a box fan to move air over the affected area. Dry the wall thoroughly for a day or two.

Mix water and bleach in a spray bottle using a 50-50 ratio.

Spray the bleach mixture on the affected area of the wall and wipe it with a rag. Remove as much of the mould as you can using this method.

Cover the affected area of the wall with a stain blocker using a paint brush. Let the stain blocker dry for a day and apply a second coat if any signs of staining can be seen. Let the second coat dry for a day.

Paint the repaired area of the wall with touch-up paint that matches the rest of the wall. Apply the paint using a paint brush.

Things You'll Need

  • Box fan
  • Bleach
  • Spray bottle
  • Rag
  • Stain blocker
  • Paint brush
  • Touch-up paint
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About the Author

Damon Koch has years of writing experience ranging from software manuals to song lyrics. His writing has appeared in software manuals for Human Arc and on the CDs "Small Craft Advisory" and "Impersonating Jesus." He also has worked in building maintenance since 2004. He has attended Lorain County Community College as well as Cleveland State University.