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R Value of loose fill asbestos...

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Mark Eatherton
Mark Eatherton Member Posts: 5,853
in THE MAIN WALL
Does ANYONE know the R value per inch for loose fill asbestos insulation?



Don't worry. I have no intentions of disturbing it. I just need to know in order to do a heat loss calculation.



I looked on Google, and all they did was warn me not to disturb it.



It is similar in consistency to mineral wool, and if I can't find a true R value, I will assume the R value of mineral wool loose fill insulation.



Mucho Gratzi.



ME

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Comments

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,011
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    It's between

    R-4 and R-11.
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
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    Thanks Alan...

    I will assume the median.



    ME

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  • RobG
    RobG Member Posts: 1,850
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    R Value for asbestos

    This is what I found during a quick search "I tried the search term "Thermal Conductivity of Asbestos" and got this page (http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html) for the 1st hit. After a few unit conversions, I came up with an R-value for asbestos mill board of 12.4 per inch of thickness. Loose packed asbestos came in at 11.8 per inch."

    Hope it helps

    Rob
  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
    edited July 2011
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    Thanks Rob...

    I will take it into consideration.



    Funny how a slight change in syntax makes a World of difference :-)



    ME

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