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Wood Stove - Hearth R1 Value

tbz

tbz

Silver Member
Joined
Sep 10, 2010
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1,254
Location
PA/NJ - Borderlands
So I can't seem to find anything with in the IRC that requires a Hearth to be under a wood stove, other than weblinks noting that the Feds now require that under the stove needs a R1 value.

Some of the cast iron stoves detail out more protection, but a bunch of the new units just note R1 Value.

So, if you had a cabin with wood floor joist, 7/8" Advantech sub-floor, wire and mud base with wood look 8"x48" porcelain tile over the top with tight seems and grout. Would you consider this an R1 value, or what additional would you be looking for to meet the R1 value?

Thank you in advance. Tom
 
I do not know if the R-1 is a code requirement or a manufactures installation/listing requirement but check out the link as it seems a R-1 value is pretty easy to meet

Help calculating R Values for building hearth

I just bought a new freestanding wood stove. I am now in the process of gathering information before building my hearth. One thing I'm struggling with is calculating R values. According to my manual and many others I've found online, I need a minimum R value of 1.19 to pass inspection and...
www.hearth.com www.hearth.com
 
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