Woodstock Hearth R-Values???

[leeave96]

I may redo my hearth for my Woodstock Keystone and have been reading some recent and old posts for R values with regards to woodstove hearths.

I don't really see any for Woodstock woodstoves on this site or in the manual. The manual does suggest how to construct a hearth, which is basically a plywood base, 1/2 inch insulation board - like Durarock and 1/4 of slate, stone or brick. This is how I constructed my present hearth.

If I redo my hearth, it will be mostly a cosmetic redo from one porcelein tile style to another.

But - I was just courous is to if anyone had ever seen or heard a specific R value for a Woodstock stove.

Thanks!
Bill

 

[begreen]

If I recall, Woodstock has some good instructions on their hearth requirements and suggested construction. See page 6 of the installation manual:

(broken link removed to http://tinyurl.com/3ow3x4r)

 

[leeave96]

Yep - that's the document I built my hearth to - just no mention of an R value.

Thanks,
Bill

 

[Todd]

Never seen any R value, just what they describe in the manual. Looks like the standard hearth pad is acceptable and I don't think the R value of those is much over 1. Good question to ask Woodstock.

 

[begreen]

They specify tiled durock or equivalent so based on the directions I'd conclude R=.26 or greater is sufficient. That is the R value of cement board.

Your Woodstock Soapstone stove must stand on either:

1) a hearth of solid masonry (brick, stone, or tile supported by concrete),
2) a prefabricated hearth pad listed to UL standards. These pads can be placed on top
of a wood or carpeted floor. (Woodstock Soapstone Company carries a selection of
these pads.)
3) a custom designed pad made up of approved non-combustible materials which
will protect the floor from sparks, hot coals and ashes; and prevents heat from
being radiated onto the floor underneath.

If you decide to build your own hearth to go over a combustible floor, start with a
plywood base. Over this apply:
1) a 1/2 inch layer of an approved non-combustible insulation board (such as
DUROCK cement board or WonderBoard Backer Board), then apply
2) 1/4†or more of a decorative, non-combustible material such as tile, slate,
stone or brick.

 

[leeave96]

Never seen any R value, just what they describe in the manual. Looks like the standard hearth pad is acceptable and I don't think the R value of those is much over 1. Good question to ask Woodstock.

I was out tonight at a Tractor Supply and they have their woodstoves out on display and accessories too. I bought a 36" x 52" piece of stoveboard to put on the concrete floor in my addition's basement. I'll set the Endlander on it just to reflect some heat off the concrete. It is covered with metal, but this particular stoveboard is blue/gray with a brick-looking pattern on it. I thought it would look OK on the bare concrete vs the wood grained look I've seen in the past. The box says it has an R value of 1.5

Thanks!
Bill

 

[raybonz]

I've read Woodstock's pdf on hearth construction and to me they just need ember protection.. Quite a few stoves require just ember protection including mine and it sure makes the hearth easier to build.. It would be great if all stoves were built so they only needed this protection as some need much higher R-value..

Ray

 

[Backwoods Savage]

It does not get hot under the stove. It will get warm and a really nice place to put wet gloves.

 

[leeave96]

My pad hearth pad under the Keystone gets a little toasty. Don't know that you'd get burned touching it, but it's definately more than luke warm. We have the standard heat shield on it too.

The biggest heat related issue we had last year was someone getting to close to the stove with their clothes and leaving a bit of it melted to the stove....

I'll definately take some temperatures of the pad on the Keystone vs the Englander this year.

Thanks,
Bill