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  1. #1
    Jeff Eastman's Avatar
    Jeff Eastman Guest

  2. #2
    Join Date
    Mar 2007
    Spring Hill (Nashville), TN

    Default Re: Substance on roof

    Quote Originally Posted by Jeff Eastman View Post
    Is this some sort of mastic on the roof?
    They tried to seal the screws. Most likely the rubber grommets(if they used them) started to crack and needed replacement. But to save money they just rolled some type of mastic sealant over them.

    Scott Patterson, ACI
    Spring Hill, TN

  3. #3
    Richard Rushing's Avatar
    Richard Rushing Guest

    Default Re: Substance on roof

    What Scott stated is exactly what they did.

    Jeff, one of the first issues that one will encounter with a metal roof is the rubber grommets (called elastomeric washers). When these crack (and they will) they can allow leaks to happen.

    That's what they tried to seal up...



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