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under slab insulation??

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David Sutton_2
David Sutton_2 Member Posts: 63
in THE MAIN WALL
what type matirel do you recomend to put under concrete slad for radient heat????

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  • Steve Eayrs
    Steve Eayrs Member Posts: 421
    A min. of.......


    2" blueboard or similar, high density foam board, is whats used around here. Believe its somewhere around 40-50#/sq.ft. stuff. Moisture is the killer with any insulation, and even this stuff is not water proof. Good drainage is a must, and a good vapor barrier under the insulation is needed. Moisture wicks heat away in a hurry.
    Steve
  • Tom Meyer
    Tom Meyer Member Posts: 300
    Standard Guidelines

    The Radiant Panel Association puts out a booklet: "Standard Guidelines for the Design and Installation of Residential Radiant Panel Heating Systems".

    The list price for the booklet is $12.00. It is also available for review free online at:

    http://www.radiantpanelassociation.org/i4a/pages/index.cfm?pageid=115

    Senior Designer/Trainer
    Precision Hydronics Corporation
    www.precisionhydronics.com
  • kevin
    kevin Member Posts: 420
    ditto...

    to Steve. Some others may try bubblefoil but styro is real nice to work with. I use the wirsbo stapler and the job goes quick and the tube stays put. kpc
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