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  1. #1
    Jim B. Robinson's Avatar
    Jim B. Robinson Guest

    Question Low Slope Roof material

    While I was looking at a roof for my HI course, I glanced over at the neighbours, and saw what appears to be a very sloppily mopped asphalt coating - especially visible around the skylights, wall/roof flashing, and rake flashing. It's also visible along the rake of the upper roof. It appears the additional rake flashing is designed to hold back the asphalt.

    Since BU roofs minus the gravel are not typical for residential, around here anyway, and the slope appears too great I don't think it's BU, not professionally installed anyways.

    Could it be they mopped asphalt over the existing roof material? Though I don't see any telegraphing of shingles. It also looks like they didn't remove the skylight flashings before the operation.

    There are other obvious areas of concern - the downspout allowing localized concentrated water onto the lower roof, the roof/wall flashings appears to be installed after the fact.

    Any thoughts appreciated.
    Jim

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  2. #2
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Low Slope Roof material

    Quote Originally Posted by Jim B. Robinson View Post
    While I was looking at a roof for my HI course, I glanced over at the neighbours, and saw what appears to be a very sloppily mopped asphalt coating - especially visible around the skylights, wall/roof flashing, and rake flashing. It's also visible along the rake of the upper roof. It appears the additional rake flashing is designed to hold back the asphalt.

    Since BU roofs minus the gravel are not typical for residential, around here anyway, and the slope appears too great I don't think it's BU, not professionally installed anyways.

    Could it be they mopped asphalt over the existing roof material? Though I don't see any telegraphing of shingles. It also looks like they didn't remove the skylight flashings before the operation.

    There are other obvious areas of concern - the downspout allowing localized concentrated water onto the lower roof, the roof/wall flashings appears to be installed after the fact.

    Any thoughts appreciated.
    Jim
    JR: Looks like one big future (present?) leak.


  3. #3
    Join Date
    Apr 2008
    Location
    Illinois
    Posts
    54

    Default Re: Low Slope Roof material

    That could be asphalt. Steep sloped asphalts are available.


  4. #4
    Join Date
    Mar 2007
    Location
    Santa Rosa, CA
    Posts
    2,481

    Default Re: Low Slope Roof material

    The drip edge in your first photo looks like there is asphalt drooling down the side. Could be the builder of the addition wanted to use built-up because of the slope.

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  5. #5
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,549

    Default Re: Low Slope Roof material

    If there's any doubt in your mind, picture it with 2 feet of snow on it.


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