How To Clean Mold Off Your Roof

Before applying the cleaner spray the roof with water to cool it down.

How to clean mold off your roof.

Adding some tri sodium phosphate tsp will help clean the roof at the same time. In addition choose a day with little wind so that when you spray the solution it stays on your roof 1 x research sourcestep 2 perform maintenance on your roof. Step 1 choose a cool and overcast day. If you have a consistent problem with mold growth on your roof consult a roofing professional.

The concentrated jet will scrape off the small pebbles on top of the shingles and reduce their water repellency which will only make your mold situation worse. Wait about 20 minutes then rinse. Hose off the area with plain water spraying at a downward angle. Splash the plants and parts of your lawn that are close to the sides of your house with water to protect them from the bleach solution.

Never use a pressure washer to wash or rinse shingles. Mix 1 part bleach to 3 parts water and apply to the mildew covered area with a hand pump sprayer. That way whenever it rains some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles. Then use a long handled brush to scour the surface of the shingles and loosen stuck on mold while it s dry and brittle.

Then spray the cleaner onto the shingles photo 1. Step 3 let the solution sit for 15 minutes then rinse it off with a hose. If the surface is too porous to remove mold completely such as in ceiling tiles you may have to replace it. Step 1 protect your plants and lawn.

Before you begin it s important to repair loose shingles and flashings to minimize roof damage. The day you perform deep cleaning on the shingles should be cool and overcast. To clean mold off a roof start by putting on rubber gloves a breathing mask and goggles to protect yourself from the harsh cleaning chemicals. To keep the algae from coming back insert 6 inch wide strips of zinc or copper under the row of shingling closest to the roof peak leaving an inch or two of the lower edge exposed to the weather.

Scrub mold off hard surfaces such as window sills and tile with detergent and water and dry completely with a rag. Sunlight and warm weather will ensure the cleaning solution dries too fast to be of any use.