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Thread: Black Stain

  1. #1
    Join Date
    May 2014
    Location
    virginia
    Posts
    2

    Default Black Stain

    Hell everyone. I'm an inspector in training and have been doing a number of inspections for practice. In one house there's a metal flue for a wood burning stove running through a framed chimney. When in the attic I observed a black stain on the OSB on one side. The stain is at the same height as a junction where two pieces of metal flue are joined.

    I'm assuming the correct thing to do would be note this in the inspection report and suggest further evaluation by a chimney sweep.

    But I'm curious if anyone else has come across this. I'll try to include a picture.

    Tom

    2018 ASHI InspectionWorld

  2. #2
    Join Date
    Mar 2007
    Location
    Spring Hill (Nashville), TN
    Posts
    5,847

    Default Re: Black Stain

    Quote Originally Posted by Tom Hinds View Post
    Hell everyone. I'm an inspector in training and have been doing a number of inspections for practice. In one house there's a metal flue for a wood burning stove running through a framed chimney. When in the attic I observed a black stain on the OSB on one side. The stain is at the same height as a junction where two pieces of metal flue are joined.

    I'm assuming the correct thing to do would be note this in the inspection report and suggest further evaluation by a chimney sweep.

    But I'm curious if anyone else has come across this. I'll try to include a picture.

    Tom
    Hell of a first post, Tom!

    Welcome....

    A photo would help. Try to never or very seldom use the phrase "further evaluation" this tends to leave a bad taste in your clients wallet, so to speak. They are paying us to figureout the problem. Once we do that, then recommend for whoever to repair, correct, or replace whatever to take care of the problem. This does not mean we need to design the repair!

    It sounds like this might be a flashing problem. Black stains on OSB tend to mean that water is seeping in from some where. Normally a wood stove if it is leaking creosote, it will have a very dark brown to rusty looking color. Black could also mean it is getting too hot, in this case it is basically charcoal!

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  3. #3
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,546

    Default Re: Black Stain

    What Scott said. 'Black stain" is too vague. You need to look close and get a camera in there. Then determine if it is soot, charcoal, or mould from a water leak.
    If it is coming from the seam in the pipe, ok it is likely soot from wood smoke, then call for the pipes to be replaced. Also add that it is a fire hazard. What Scott said, try to go beyond evaluation to 'repair this defect'.

    You can use 'black stain' when describing something, but in the context that you know what type of stain it is.

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

  4. #4
    Join Date
    May 2014
    Location
    virginia
    Posts
    2

    Default Re: Black Stain

    I tried to include a photo but is didn't work. I clicked on "upload photo" and then put the photo in the page that came up. I assumed that the photo would go along with the text but it didn't.

    Tom


  5. #5
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Black Stain

    Testing.
    No problem for me.
    I suggest you try again. Brian has a tutorial for uploading photos.
    2013-04-04_0928 - brihann's library

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

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