Soap Stone

[Brian Foley]

Hello, I move my Mansfield form one house to another. The new home I put the stone on a raised hearth, 2X10 Frame, 5/8 plywood top, covered in 1/2" Dura Rock, Then 1/4 slate. The surround has slate Dura rock and metal framed walls this plenty of air circulation behind.
The old house had a concrete floor and it was far from wall so there was no concern about thing getting to hot. After firing up the stove I find the floor is extremely Hot, to hot to touch??? Is this a concern?? The stove corners are 8" from the slate (per the manufacturer) and the walls are hot but not as hot as the floor.

What are your thought? When is it to hot?

Thank you Brian

 

[bholler]

Hello, I move my Mansfield form one house to another. The new home I put the stone on a raised hearth, 2X10 Frame, 5/8 plywood top, covered in 1/2" Dura Rock, Then 1/4 slate. The surround has slate Dura rock and metal framed walls this plenty of air circulation behind.
The old house had a concrete floor and it was far from wall so there was no concern about thing getting to hot. After firing up the stove I find the floor is extremely Hot, to hot to touch??? Is this a concern?? The stove corners are 8" from the slate (per the manufacturer) and the walls are hot but not as hot as the floor.

What are your thought? When is it to hot?

Thank you Brian

View attachment 256321

What are the hearth insulation requirements? Clearances?

 

[Highbeam]

My heritage had huge hearth insulation requirements.

It’s really time for stove manufacturers to design stoves that are safe with ember protection only.

 

[vwmike]

I’ve built a few of these over the years as I’m in the tile business, cement board and tile have very little r value. 1/2 board and thin slate aren’t near enough. What I’ve done in the past is sandwich a couple layers of 5/8 fire code drywall between the ply and cement board. Unfortunately this doesn’t help you now...

 

[bholler]

I’ve built a few of these over the years as I’m in the tile business, cement board and tile have very little r value. 1/2 board and thin slate aren’t near enough. What I’ve done in the past is sandwich a couple layers of 5/8 fire code drywall between the ply and cement board. Unfortunately this doesn’t help you now...

Drywall is not noncombustible.

 

[Socratic Monologue]

My heritage had huge hearth insulation requirements.

It’s really time for stove manufacturers to design stoves that are safe with ember protection only.

Our Heritage 8022 from 2014 only requires ember protection.

 

[Woody Stover]

Sweep's Library - R Value of Hearth Materials

My wood stove requires floor protection with a certain R value. Where do I find this rating?

hearth.com

 

[Woody Stover]

This is from woodstove.com

 

[Highbeam]

Our Heritage 8022 from 2014 only requires ember protection.

good news! Mine was new in 2007. Put 30 cords through it.

 

[begreen]

The 8011 Mansfield requires R=.8 hearth insulation. If this was with Durock cement board then the hearth only has R=.26 protection. If it is with the lighter Durock NexGen then it has R=.39 protection. To do this right 2 sheets (1") of Durock NexGen would be needed.