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Comment by Eric Aune on May 9, 2011 at 8:26pm
Thanks.  I have always installed tubing over 2" foam, not 4".  With optimum soil conditions (mostly what I deal with where I am) there is little need to go with anything over 2" foamboard insulation in the floor.  Perimeter insulation is, in my opinion, as important if not more than the floor.
Comment by Kevin F. Galligan on May 5, 2011 at 9:07am

Eric:  nice photos of your quality work.  questions for you on your radiant basement floor, pls confirm 4" pinkboard (nicely taped), what type of clips? and what underlayment(s)?

Kevin

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