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Roof From today

Discussion in 'Power Washing' started by lkendall, Sep 17, 2012.

  1. grandview (2006)

    grandview (2006) LawnSite Gold Member
    Posts: 3,466

    I thought I heard they are adding copper to the roofing mix to stop this.
  2. lkendall

    lkendall LawnSite Member
    Posts: 157

    im not sure about copper? but i know they do have a option now for shingles that can resist the mold better, im not sure what the additive is now however I do know that it is more expensive
  3. Roof Cleaning Virginia

    Roof Cleaning Virginia LawnSite Member
    Posts: 177

    Great looking results with that low pressure roof cleaning!

    Algae Resistant (AR as they call them) shingles are coated with a copper oxide, but the warranty is only 8-15 years depending on the brand and quality level opf the shingle.

    Keep up the great work.

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