Results 1 to 5 of 5
  1. #1
    Join Date
    Oct 2016
    Location
    Ontario
    Posts
    2

    Default Black spots in attic

    I'm looking to buy a new house. Had the inspection yesterday. Inspector pointed out black stains in the attic. Is this mold? New roof was installed in 2008, but the sheath appears to be original. Should I be concerned? How big of a problem is this? Thanks.

    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Elite MGA Home Inspector E&O Insurance

  2. #2
    Join Date
    Feb 2008
    Location
    Caledon, Ontario
    Posts
    4,827

    Default Re: Black spots in attic

    Very well could be mould, but without testing to confirm its only a guess.

    Appears to be localized and would need to investigate further as to cause.

    i.e. roof leak, damaged vapour barrier, exhaust fan from bathroom not vented properly, poor ventilation of attic.

    The value of experience is not in seeing much, but in seeing wisely.

  3. #3
    Join Date
    Oct 2010
    Location
    MONTREAL QUEBEC-CANADA
    Posts
    1,257

    Default Re: Black spots in attic

    I suspect the attic/roof deck venting is compromised.

    Robert Young's Montreal Home Inspection Services Inc.
    Call (514) 489-1887 or (514) 441-3732
    Our Motto; Putting information where you need it most, "In your hands.

  4. #4
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,439

    Default Re: Black spots in attic

    That amount of staining on old OSB is pretty minor. I won't say there is no problem, but from those two pics alone, I'd say there was a roof leak at the ridge, probably now dry since the roof was replaced.
    That second pic, some water stains, cause unknown, maybe condensation. Still pretty minor, as your inspector should have told you.

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  5. #5
    Join Date
    Oct 2016
    Location
    Ontario
    Posts
    2

    Default Re: Black spots in attic

    Thanks everyone for your opinion. Quite helpful!


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •