40° Good Morning
40° Good Morning
LifestyleHome and Garden

How to prevent summer mold in the home

You can remove small amounts of mold by

You can remove small amounts of mold by diligently scrubbing with detergent and water, but anything beyond 10 square feet probably requires professional assistance. Credit: TNS / Burbun Ilya / Dreamstime

Summer provides ideal conditions for mold growth. The combination of humidity, rainfall and tightly sealed homes helps mold grow out of control. Fortunately, you can take steps to keep this problem at bay. Follow these tips to ensure a mold-free home for the season.


Mold needs water to grow, so moisture control is your best weapon. Cooking, showering, running the dishwasher and allowing steamy outside air to enter the home all help mold grow. Make sure bathroom and kitchen fans work properly, and that they vent to the outside. When you observe excess moisture on the walls and ceilings of those rooms, wipe it away promptly. 

Make sure your drainage systems are in good order. And also make sure your yard slopes away from the house so ground water and rain don't pool near the foundation of your house. Your gutters and downspouts should direct water at least 3 feet away from the house.

If you have a crawl space, install a specialized sheet of polyethylene  that prevents moisture from seeping through and giving mold a foothold on the surfaces. If you have a damp basement, run a dehumidifier to keep it dry.

Keep an eye on softgoods in storage. Clothing, paper and cardboard all provide excellent breeding spots for mold if they come in contact with water.

Air circulation slows down mold growth. Even in rooms you don't often use, keep the vents open so the air conditioner runs through them. (This is a good idea anyway; it's a myth that closing vents to unused rooms increased HVAC efficiency.)

Periodically check for plumbing leaks. Pools of unchecked water are quick to grow mold.


Once mold gets a foothold, it can be difficult to remove. If you find it covering a small area, the U.S. Environmental Protection Agency says it can be scrubbed away thoroughly with a mix of detergent and water. However, if it covers more than 10 square feet, or you don't feel confident in doing it yourself, you should call in the assistance of a professional remediation company.

The best practice is to hire separate mold testing and remediating companies. A tester can confirm the substance is mold and determine the extent of necessary remediation. Hiring separate companies prevents conflicts of interest; you can have more confidence in a mold tester who doesn't stand to profit from recommending more work. Mold removal can be a very expensive job, so you want the most reliable information.

Most states don't license mold removal companies. Ask if they're familiar with EPA standards, or seek companies with separate accreditation such as Mold Removal Specialist certification from the Institute of Inspection, Cleaning and Restoration Certification.


We're revamping our Comments section. Learn more and share your input.

More Lifestyle