How to Clean Roof Mold and Mildew With Power Washing

A mold problem can sneak up on you anywhere, and roofs are no exception. These slimy black deposits can be an eyesore, as well as a health risk, and they should be removed promptly.

Luckily, it’s possible to break up and eliminate a buildup of mold, moss, and algae on your roof. This process is a great way to keep your home looking its best, as well as to protect your family’s health.

How to Clean Roof Mold and Mildew

First, make sure your shingles are dry and brittle, then use a long-handled brush to scrub away the thickest growths. Focus on areas where the shingles overlap. Once you’ve finished with the scrubbing, spray your roof down with a powerful chemical cleaner to finish the job.

You can purchase a roof cleaning solution from any home improvement store. This formula kills mildew and mold quickly, and removes stains and discoloration from the surface. It comes in a one-gallon concentrate, which is enough to cover up to 2,000 square feet when diluted with three parts water.

The chemical mix is a simple three-to-one water-to-chemical ratio of chlorine bleach to trisodium phosphate (TSP). Chlorine kills mold while TSP removes stains and odors. It also makes a great cleaning solution for any other outdoor surface, like decks or patios.

When you’re ready to start the cleaning process, use a respirator to avoid inhaling the chemicals. Apply the chemical to the surface, and then let it sit for 10 minutes before rinsing it off.

Safety always comes first, and you should wear a harness if possible. Using a harness will ensure that you stay on the ladder and won’t fall off. You should also wear goggles, thick rubber gloves, and other protective clothing as needed.

Don’t attempt to clean your roof without a harness, as it can be dangerous and cause serious injuries if you slip or fall. If you are unsure about your ability to safely climb a ladder, contact a professional contractor who specializes in power washing.

Getting Rid of Mold and Mildew With Power Washing

A professional power washing company in Annandale, VA can thoroughly clean a home’s roof, windows, exterior walls, gutters, and pool deck, and remove unsightly streaks and dirt from the surfaces, enhancing their appearance and improving the overall curb appeal of a house. Additionally, a thorough cleaning reveals areas of damage to the home’s structure that aren’t easily visible, letting a contractor know where repairs should be made.

Another advantage of power washing is that it reveals any soft spots in the shingles, which may indicate a need for structural repair. This prevents leaks in the future and preserves the strength of a roof’s structure.

In addition, power washing a house can reveal cracks and holes in the brick or aluminum siding, as well as any damaged paint that might be on the walls. Regular cleaning of a house also preserves the color of painted concrete, brick, and paver stones. It also removes unsightly streaks and dirt from exterior windows, enhancing the value of the home. For more details on power washing visit