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Re: under-slab insulation for cooler building

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In a message dated 8/5/05 12:49:08 PM, mstuart(--nospam--at)schoordepalma.com writes:
There is absolutely no need for underslab insulation in a cooler.
Sub-slab insulation is needed only around the perimeter of the slab where you are trying to prevent the “cooled” soil from effecting adjacent surfaces outside of the cooler footprint that would result in condensate problems.

Doesn't subgrade insulation also determine how much of the subgrade you'll be cooling, and therefore how much energy you'll be permanently pumping into the ground.  "Save money now; spend money later."