How to Clean Shingles With Clorox

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Clean roof shingles can increase a home's resale value.
Clean roof shingles can increase a home's resale value. (Image: Jupiterimages/Photos.com/Getty Images)

Roof shingles protect interior spaces from weather elements to increase a home’s lifespan. They are constantly exposed to airborne dirt particles and organic debris that attract mold, mildew and algae. Shingles in damp climates may also acquire moss growth from nearby trees and vegetation. Besides being unsightly, moss restricts water drainage off shingles, causing leaks and roof deterioration. Annually cleaning shingles with Clorox removes discoloration and accumulated organic matter to preserve a roof's aesthetic appeal and structural integrity.

Things You'll Need

  • Garden hose
  • Plastic drop cloths
  • Long clothing
  • Eye protection
  • Rubber gloves
  • Slip resistant shoes
  • 1 gallon Clorox bleach
  • Clean bucket
  • 3-gallon pump sprayer tank
  • Nylon scrub brush

Wet down all plants, shrubs and grass below the roof with water to prevent Clorox runoff from killing them. Lay plastic drop cloths over the vegetation as well.

Gear up with long clothing, eye protection, rubber gloves and slip resistant shoes for roof safety and protection against the Clorox.

Mix 1 gallon of water and 1 gallon of Clorox bleach in a clean bucket. Pour the solution into 3-gallon pump sprayer tank.

Spray the Clorox solution generously onto the shingles. Keep the solution on the shingles for 30 minutes.

Scrub off any loose debris, moss or stains from the shingles using a nylon scrub brush.

Rinse the shingles with the garden hose to wash away the Clorox solution and loose grime. Spray water down the shingles to prevent damaging them.

Let the shingles air dry.

Tips & Warnings

  • Substitute oxygen bleach for the Clorox to cause less harm to the environment.
  • Pressure washers force water behind shingles, causing roof deterioration.

References

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