Thin hearth build

[snobuilder]

I've been looking on the net for an alternate to durock in a higher r value as a substrate for either new tile or 3/4" granite slabs I already have.

 

[rwhite]

Are you trying to maintain the same thickness as durock but still have a stable platform for tile? I don't know of anything that meets that need.

 

[bholler]

I've been looking on the net for an alternate to durock in a higher r value as a substrate for either new tile or 3/4" granite slabs I already have.

Micore is about the best option for hearth insulation but you will need cement board ontop of it to put tile on. Your stove has really high r value requirements as listed. And because it is so modified you really need to build the hearth for an unlisted stove.

 

[jalmondale]

Another vote for micore - I overbuilt my hearth on purpose (didn't want to have to redo it if I ever got a different stove), and 3 layers of micore plus cement board plus tile gets me around R3.5 in just over 2" of height. I've got a fairly heavy soapstone stove on top of it, and haven't had any issues.

 

[snobuilder]

Cool just placed an order.
TY H.com