Conductive temperatures underneath stove.

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sneefy

Member
Feb 20, 2022
82
Western WI
I'm building a new home. It'll have hydronic radiant tubing in a FPSF concrete slab. No basement.

I reserved a Lopi Evergreen (pedestal version) and have been planning on using concrete pavers for a hearth below it. Pavers I've been contemplating are around 2" thick.

Is there any reason to be concerned about heat from under the stove conducting downwards and damaging the PEX tubing (and for that matter the foam)? Or am I just overthinking it and it's never going to get that hot?
 

begreen

Mooderator
Staff member
Nov 18, 2005
96,376
South Puget Sound, WA
That should be fine. The hearth will not get too hot and that heat will be dissipated by the pavers and slab.
 

sneefy

Member
Feb 20, 2022
82
Western WI
That's what I've been telling myself but I figure getting other people's thoughts couldn't hurt. I've been pondering having the tubing run around the corner hearth area instead of underneath, but I gather that's just being paranoid?
 

begreen

Mooderator
Staff member
Nov 18, 2005
96,376
South Puget Sound, WA
I am fairly certain that the PEX will get hotter with the fluid inside of it than the heat conducted down through the hearth. That said, there is no harm in being cautious. Peace of mind is important.