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  1. #1

    Default foundation insulation or drainage board or expansion material

    Ran into this on foundation walls and retaining walls on recent new home inspection.
    Anyone have any ideas what this is?
    I looks a little like insulting duct material, it is fibrous??

    Photo shows retaining wall

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  2. #2
    Join Date
    Jun 2008
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    Stacy, MN
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    Default Re: foundation insulation or drainage board or expansion material

    It's Tuff-n-dri; it's an insulation and a part of a foundation waterproofing system. It acts as a drainage plane.


  3. #3
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    Mar 2012
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    Lansdale, PA
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    Default Re: foundation insulation or drainage board or expansion material

    Quote Originally Posted by Fred Weck View Post
    It's Tuff-n-dri; it's an insulation and a part of a foundation waterproofing system. It acts as a drainage plane.
    I believe the manufacturer considers it a drainage plane, insulation, and a protective covering for the water-proofing.


  4. #4
    Join Date
    Jan 2011
    Location
    Guelph,Ontario
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    169

    Default Re: foundation insulation or drainage board or expansion material

    It acts as all of the above,works well.


  5. #5

    Default Re: foundation insulation or drainage board or expansion material

    I attempted to find out information on the brand mentioned but none of their product has the fibrous look and characteristic of the materials in my post??

    Jeff Zehnder - Home Inspector, Raleigh, NC
    http://www.jjeffzehnder.com/
    http://carolinahomeinspections.com/

  6. #6
    Join Date
    Mar 2012
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    Lansdale, PA
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    876

    Default Re: foundation insulation or drainage board or expansion material

    Quote Originally Posted by Jeff Zehnder View Post
    I attempted to find out information on the brand mentioned but none of their product has the fibrous look and characteristic of the materials in my post??
    I can't tell from the photo what the material is. Tuff-N-Dri or others I have seen use rigid fiberglass. Was it different from that?


  7. #7
    Join Date
    Jul 2010
    Location
    Wisconsin
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    274

    Default Re: foundation insulation or drainage board or expansion material

    This might help, sometimes it might be more white looking, probably depends on who makes it. But, this is a fiberglass type 4'x4' (Warm-N-Dri) board material, think from Owens Corning, the pink people...




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