Here's a list of fireplace hearth material R values. Just so you have an idea of what the insulating values are. Cement board is on there as well as tile.
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[B][COLOR=black]Bill[/COLOR][/B]
[COLOR=black][COLOR=red][B]Red[/B][/COLOR] [/COLOR]Performer 1993
Green Performer 1998
22.5 OTG
22.5 OTS
UDS
Mini WSM
Super Fast [COLOR=red][B]Red[/B][/COLOR] Thermapen :thumb:
[B]Got butt ? Smoke it !![/B]
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