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mackb

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Everything posted by mackb

  1. Roof Cleaning

    I am a homeowner who is confused about what the best chemical for asphalt washing/moss/lichen killing is. I have seen several web sites for 'Spray & Forget', 'New Again', 'Roof Raider', etc. I have read bleach is bad along with Sodium Hydroxide. What do you recommend? Thanks
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