WebDec 25, 2024 · Combine all ingredients in a pump sprayer then generously spray the solution on the moldy roof shingles. Let it sit for up to 30 minutes and rinse with clean water from your garden hose. If they still feel slimy or still have mold present you can spray the solution again and let sit for 40 minutes. WebRinse the shingles with a garden hose on a low-pressure sprayer setting to remove the bleach-and-water solution. Allow the roof to dry. 8. Examine the roof for further creosote staining. If...
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WebNov 15, 2024 · Another way to clean stains on your roof is to try power washing. This is a common solution because it avoids chemicals, some homeowners already own a … WebRoof stains return in as few as 9 months, and the roof mold is worse than before. Roof Cleaning using chemicals like chlorine bleach and TSP (Trisodium Phosphate) as a cheap roof cleaning spray to make your shingles look new again is not advisable. Chlorine bleach / TSP chemical combination can kill plants, and the phosphates hurt the … WebTypically, in cleaning black streaks from an asphalt shingle roof, a mixture of water, bleach, and trisodium phosphate (TSP) is needed. Keep in mind that you may need to protect … ogs netherlands