Optimal R-value - Insulating Slab - Construction - Contractor Talk

Optimal R-value - Insulating Slab

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Old 07-27-2019, 01:03 PM   #1
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Optimal R-value - Insulating Slab

I'm doing a basement in northern climate of Minnesota. I'm about 8 feet below grade. I was planning to insulate slab with 2" of foam which is R-10. I was told it wasn't necessary since i wasn't running floor heating. What is a good R-value that will give me best optimal performance.
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Old 07-27-2019, 05:18 PM   #2
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Re: Optimal R-value - Insulating Slab

Are you under an energy code?


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Old 07-27-2019, 08:22 PM   #3
edward trowelhands
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Re: Optimal R-value - Insulating Slab

You lose plenty of heat through a slab. Even though 8 feet down the ground temp is probably reasonable. R10 may pay for itself eventually, and create a more comfortable floor.
You make something idiot proof and the world invents a better idiot.
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