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Thread: Frost on Roof

  1. #1
    Join Date
    Aug 2006
    Location
    Austin
    Posts
    7

    Frost on Roof

    It's that time of year when we occasionally have frost on our roof tops. On my roof, some areas will have frost and others not. Is the absence of frost an indication of heat loss thru the roof via poor insulation? And conversely, frosted areas indicate more adequate insulation?

    Thanks,
    Wayne

  2. #2
    Join Date
    Jan 2004
    Posts
    108
    Yes, the absence of frost is an indicator of heat loss. That heat loss can come from less insulation or from warm air leaking up through the ceiling.

  3. #3
    Join Date
    Oct 2007
    Location
    Richmond, VA
    Posts
    103
    Or in my case a stupid a$$ builder who was lazy and did not feel like insulating the entire attic. Previous homeowners were duped!

  4. #4
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    If the roof is "shaded" by a tree or some other object, frost may not form.
    Karst means cave. So, I search for caves.

  5. #5
    Join Date
    Jan 2003
    Posts
    167
    in my area with lots of duct systems in the attic you can actually see each run out and register location by the lack of frost on the roof.

  6. #6
    Join Date
    Nov 2006
    Location
    TX
    Posts
    7

    Question Just Curious

    Which Austin?

    Austin, AR
    Austin, CO
    Austin, IN
    Austin, KY
    Austin, MN
    Austin, NV
    Austin, TX

    Regards
    Chris

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