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Old 04-02-2013, 08:38 AM
Serf
 
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Location: NM
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Wink Hearth insulation

Thanks to many of you who have posted on Hearth insulation. I have a Mugnaini Medio 110 oven kit and the Mfg. calls for 6" of sand under a 3" concrete base under the hearth. They say that while the sand acts less as an insulator but more as a heat sink to develop thermal mass and keep the floor hotter longer. Although it does take 20 minutes longer to come to temperature. Any thoughts on this design vs perlite/vermiculite concrete mix?
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Old 04-02-2013, 05:24 PM
Laurentius's Avatar
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Default Re: Hearth insulation

It sounds like something counter productive to your needs! You need the thermal mass under your hearth not to be a drain for your heat, the insulation is to keep it (heat) from being sucked out. Unless, I've gotten it wrong?
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Old 04-02-2013, 11:29 PM
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Default Re: Hearth insulation

Quote:
Originally Posted by huff View Post
Any thoughts on this design vs perlite/vermiculite concrete mix?
Do you have a forest of wood to burn?
Do you have countless hours to waste stuffing the forest into the oven?
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