23 Jan '12, 2am

Is radiant barrier necissary for staple up radiant heat? #green

I took a local builder's advice and put R19 batts under the radiant pex, rather than a radiant barrier like the foil bubble foil, but after reading more I'm worried I made the wrong move. The heated floor is above a half crawl/half basement space. Thanks to this forum I air sealed and insulated the band joist so the crawl/basement is about low 50's when it is single digits outside Now I'm worried that I got bad advice but I hate to think about pulling out all the insulation to put foil on top (particularly given we just installed it). is it going to kill my efficiency e.g., will all the heat just sit in the insulation? I thought about puting the barrier under the batts but that would seem to be a waste. Any advice is much appreciated.

Full article: http://www.greenbuildingadvisor.com/community/forum/gener...

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