1. Home

Top 10 Most Common House Paint Problems and How to Fix Them

By

6 of 10

Mildew
Paint Mildew

Paint Mildew

© Home-Cost.com 2006

Symptoms: Mildew
Mildew is a fungus feeding and growing on the paint film or caulk and is identifiable by its grey, brown, green or dark black "splotchy" spots.

Potential Causes:

  • Combination of moisture, poor ventilation and lack of direct sunlight. Underside of soffits and eaves are especially prone to mildew.
  • Painting over a surface or prior paint film that still had mildew.
  • Use of lower quality paint having inadequate mildewcide.
  • Not priming bare wood before painting.
Possible Repairs:
  • Wearing eye protection (goggles) and rubber gloves, scrub vigorously with a trisodium phosphate cleaning solution or a household bleach solution of 1 part bleach to 3 parts water.
  • Let the solution set on the cleaned are for 10-15 minutes.
  • Rinse with clean water.
  • Wash the area with a detergent solution and rinse again.
  • Let completely dry and paint with a high quality latex house paint.

Promotional Feature: View this video series to learn how to take good care of your house.

  1. About.com
  2. Home
  3. Home Repair
  4. Exterior Home Repair
  5. Common House Paint Problems and Repairs - Mildew

©2014 About.com. All rights reserved.