Answer: Hand scrape and scrub Explanation: The best way to remove algae from a wood shingle roof is through careful hand cleaning using soft brushes and gentle scrubbing methods along with a wood-safe cleaning solution if needed. Wood shingles are more delicate than other roofing materials, so using pressure washing or harsh methods can damage the surface, strip protective fibers, and shorten the roof’s lifespan.
After cleaning, it’s important to allow the roof to dry properly and, in some cases, apply a wood preservative or treatment to help slow future algae or moss growth. |
| Mendoza Construction |
Answer: Power wash with a chemical mix Explanation: The best way to remove algae from a wood shingle roof is to use a non-bleach, oxygen-based cleaner designed specifically for wood, combined with gentle rinsing and proper technique to avoid damaging the shingles.
Here’s how to do it safely and effectively:
Choose the right cleaner: Use an oxygenated wood cleaner (often containing sodium percarbonate), which removes algae without bleaching or harming the wood fibers. Avoid bleach or chlorine—they can dry out the wood and accelerate aging.
Apply with low pressure: Use a pump sprayer or soft-bristle brush to apply the cleaner. Never use a pressure washer—it can split or dislodge the shingles and reduce roof life.
Let the solution soak: Allow it to sit for 15–30 minutes to break down algae and grime.
Gently rinse: Rinse thoroughly with a garden hose. Do not blast water upward under the shingles.
Improve ventilation and sunlight: Trim back overhanging trees and ensure proper attic ventilation to reduce moisture buildup and algae regrowth.
Optional: Apply a wood preservative or treatment after cleaning to help protect against future algae, mold, and UV damage.
For Florida’s humid climate, regular maintenance is key. At Honest Abe Roofing Orlando, we offer professional cleaning services and inspections to keep your wood shingle roof healthy and long-lasting. |
| Honest Abe Roofing Orlando |
Answer: Hand scrape and scrub Explanation: You should not pressure wash a wood shingles roof. |
| KRYPTONITE PRO CLEAN LLC |
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| ProMatcher |
Answer: It is not advisable to remove algae Explanation: LEARN MORE: https://4squareroofing.org |
| 4 Square Roofing |
Answer: Power wash with a chemical mix Explanation: Soft wash is the best method |
| IC Cleaning Services |
Answer: Power wash with water only Explanation: Use water only again any chemicals would cause discoloration |
| T&K Remodelers |
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| ProMatcher |
Answer: Power wash with a chemical mix Explanation: Chemicals & Low Volume wash Method |
| Rays Professional Exterior Cleaning & Restoration |
Answer: Not sure Explanation: Chemical mix only |
| Just The Right Pressure |
Answer: Power wash with a chemical mix Explanation: Safety
Working on a roof can be dangerous, and it becomes even more hazardous when wet, so be sure to take adequate safety precautions. Avoid working on steep roofs, wear slip resistant shoes, and use a safety rope where needed. When working with harsh chemicals, be sure to protect your skin and eyes.
Bleach can damage or kill other plants in addition to algae, so wet down any grass, shrubs, or other plants where runoff will occur before and after applying bleach. Covering bushes with plastic after wetting them down helps as well.
Cleaning
It’s best to clean your roof on a cloudy day to prevent the cleaner from evaporating too quickly. If you know the manufacturer of your shingles, contact them or check their website for specific recommendations on cleaning. When using a product made for cleaning roofs or oxygen bleach, follow the directions on the container.
While the recipe for cleaning a roof with bleach can vary, the basic formula is:
1 quart bleach (6% sodium hypochlorite)
1 gallon water
1/4 cup TSP (trisodium phosphate) or other heavy duty cleaner (don’t use a cleaner that contains ammonia or is not recommended for mixing with bleach, as it can result in poisonous chlorine gas) |
| Michael's Roofing |
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| ProMatcher |
Answer: Power wash with a chemical mix Explanation: condition of wood is a factor |
| American Home & Environmental |
Answer: Power wash with a chemical mix Explanation: A power washer may be carefully used on a wood shingle roof in combination with an algae killing agent. |
| CWAGS LLC |
Answer: Power wash with a chemical mix Explanation: by a professional pressure washer |
| G M M Property Inspections |
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| ProMatcher |
Answer: Power wash with a chemical mix Explanation: the best way is done with low pressure and a bleach or chlorine wash to kill the algae and hand scrape the real heavy algae from the shingle edge |
| metal masters construction.llc |
Answer: Power wash with a chemical mix Explanation: Low pressure chemical algaecide and surfactant. |
| Sterling House Wash |
Answer: Power wash with water only Explanation: Chemical can hurt wood |
| Just How It Seams |
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| ProMatcher |
Answer: Power wash with water only Explanation: Chemicals can damage the wood roof in most cases. But there are some products that have been tested and are safe for wooden roofs |
| Colorful Homes Painting And Restoration |
Answer: Power wash with water only Explanation: Wood is more durable and keep the pressure washer spray to a wider span, but also use a water proofing products to repel growth. |
| Todd Professional Home Inspection Services, LLC |
Answer: Power wash with a chemical mix Explanation: The proper chemicals and the proper pressure will be the factor in the outcome of the roof clean. |
| Genn-USA Pressure Washing |
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| ProMatcher |