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timber 12-18-2007 09:19 AM

stone veneer on fireplace
I'm looking at re-facing my existing fireplace with a cultured stone, is it necessary to re-enforce the floor below over the basement. Thanks in advance!

Tscarborough 12-18-2007 09:31 AM

No. Cultured stone is an adheered veneer. It's load is carried by the walls, unless there are execeptional circumstances. How big is the fireplace, and what is the surface currently?

timber 12-18-2007 03:17 PM

I'm coming up with about 14-16 sqft. of surface, It's about 4'high without the mantle and about 5 '1/2ft. wide. I'm thinking about framing it up to the ceiling and adding stone to that as well to make it a larger focal point in the room.The chimney outside is massive, but you hardley notice it, I'd like to eventually re-face that as well. (big dreams!)

Tscarborough 12-18-2007 07:17 PM

Is the wall sheetrock presently?

timber 12-18-2007 07:24 PM

No, it's 1/4'' paneling over 3/8'' plywood and the wall studs are 16"OC.

Tscarborough 12-18-2007 07:28 PM

You have 2 possible routes. You can strip the paneling and install either metal lath and a scratch coat or you can strip the paneling and install 1/4" Hardi-backer (concrete board). The cost should be similar, but your skill set may be more suited to one or the other. If you know how to lath and plaster, go that route. If you have basic carpentry skills, use concrete board.

Any national manufacturer will have complete installation instructions.

timber 12-18-2007 07:42 PM

I'm going to need to build a frame first, the brick of the fireplace is not recessed into the wall. It comes off the wall the width of the brick, 4". I think the concrete backer board sounds better, but do I need to worry about any weight issues pulling on the wall?

Tscarborough 12-18-2007 08:55 PM

Is it brick or is it paneling?

timber 12-18-2007 10:49 PM

fireplace pic
1 Attachment(s)
I don't know if you'll be able to get an idea of what I'm talking about from this photo, but take a look and see what you think. Thanks for taken the time!

panthony 12-19-2007 05:29 PM

You will need to frame veneer over the existing brick all the way to the ceiling. Can't just do the upper half if you are going to apply veneer stone all the way. Differing materials underneath will show a crack in the stone later on when the heat moves the materials around.

Here is the tough the firebox you will not be able to have any combustalble within 11" of the firebox opening. This includes the framing underneath the veneer stone which is only about 2-3" thick. So what you will need to do is step the stone out from the firebox 11" than step over the framing.

Tscarborough 12-19-2007 07:44 PM

Truthfully, I would not rock that fireplace.

timber 12-19-2007 08:06 PM

Tscarborough, are you saying you wouldn't go over the brick or are you saying you wouldn't do veneer period? And why? panthony, The framing sounds do-able but why can't I put a scratch coat over the brick and build the frame from the mantle up so the stone appears to go right through the mantle(which I want to replace with a timber or something) on up the ceiling?

Tscarborough 12-19-2007 08:26 PM

The problem is that the scale of the room is wrong. There are only a couple of styles that would work, something like Profit by Cultured Stone. Most of the styles have some large rocks, and can overpower a room. As for the framing, you can lath over the brick, fur over the paneling and proceed. You will certainly want to case the entire edge and make sure you reinforce for your new mantel.

panthony 12-19-2007 08:27 PM

Dissimalar materials. You should never span one type of material over two others as the place where the two differing material types move differntly with the seasons so you'll get a crack right near the location of the two dissimalar materials.

Tscarborough 12-19-2007 08:34 PM

That is correct as a rule, but in this application it shouldn't be a problem. Especially if you use a drystack pattern.

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