Stacked stone over painted fireplace

[jayedeluxe]

New to the page, thanks for having me.
I'm looking to install stacked stone over my painted brick fireplace. It is a pretty uneven surface as you can see. I'm using 1/4 in. x 2 1/4 in. Tapcon screws into 1/2 in. Durock. I know that ideally, I would get rid of the paint, but at this point that's not an option. The house remodel is done, and I went with this at the end of the project. (mistake, I know). My question is: is it critical to fill all voids behind the Durock ? And how many Tapcons should I use per 3x5 sheet ? Thanks

 

[andym]

What kind of stone are you installing exactly? 1/2" durock would normally be installed over 16" stud spacing so I see no real advantage of filling the voids. As long as you are securely fastening it and it's flat enough for what you are doing.

 

[jayedeluxe]

What kind of stone are you installing exactly? 1/2" durock would normally be installed over 16" stud spacing so I see no real advantage of filling the voids. As long as you are securely fastening it and it's flat enough for what you are doing.

Don't know the manufacturer, but they are 6x24 inch interlocking ledger panels. I'm guessing 1/2 inch thick

 

[jayedeluxe]

Just found out the manufacturer was El Dorado, recently bought out by Cultured Stone, if that helps...

 

[PA Mountain Man]

New to the page, thanks for having me.
I'm looking to install stacked stone over my painted brick fireplace. It is a pretty uneven surface as you can see. I'm using 1/4 in. x 2 1/4 in. Tapcon screws into 1/2 in. Durock. I know that ideally, I would get rid of the paint, but at this point that's not an option. The house remodel is done, and I went with this at the end of the project. (mistake, I know). My question is: is it critical to fill all voids behind the Durock ? And how many Tapcons should I use per 3x5 sheet ? Thanks

View attachment 277984

(broken link removed to https://www.usg.com/content/dam/USG_Marketing_Communications/united_states/product_promotional_materials/finished_assets/usg-durock-cement-board-with-edgeguard-installation-guide-en-CB237EG.pdf)
On 16"studs its 8" on center.

 

[andym]

I wouldn't get too crazy with the fasteners. Every 12 should be sufficient. Or 16"x8" as mentioned above. The main thing is to have a fairly flat surface. 6x24 is fairly large and will show if things aren't flat enough. 1/4" in 4 feet would be flat enough in my opinion.

 

[jayedeluxe]

Thanks for the replies. I'm also thinking if the Tapcon secured Durock is uneven from affixing to such an uneven surface, I could probably lay a scratch coat down and somewhat float it out ?

 

[Hogwildz]

You could shoot metal lath on and mortar the stone to the lath. Works well over painted brick.

 

[PA Mountain Man]

You could shoot metal lath on and mortar the stone to the lath. Works well over painted brick.

Nice work.

 

[begreen]

You could shoot metal lath on and mortar the stone to the lath. Works well over painted brick.

So much better. Bet ya don't miss that Goth fireplace look.

 

[clancey]

That's very pretty nice and modern looking and clean too--nice job...clancey

 

[Riteway]

You could shoot metal lath on and mortar the stone to the lath. Works well over painted brick.

I hired a pro to put stone veneer over my painted brick fireplace...that's exactly how they did it

 

[jayedeluxe]

Thanks for all your advice. My plan is to chip away at any super high parts of the brick. Use a strong construction adhesive at all contact points, then use 2 1/4 inch Tapcon screws every 12 inches for the 3x5 Durock sheets. Not sure if I need to tape and mud all joints and corners, though ???

 

[Hogwildz]

So much better. Bet ya don't miss that Goth fireplace look.

No, I love the new look. Right now it is a storage area while I'm working my way through the kitchen. More stone to so in the kitchen also.

 

[Hogwildz]

Yes you should tape & mud the seams definitely.
You're doing it the hard way, but it's what your comfy with, Goof luck in your project.

 

[jayedeluxe]

You could shoot metal lath on and mortar the stone to the lath. Works well over painted brick.

What did you "shoot" the metal lath with ?

 

[bholler]

Thanks for all your advice. My plan is to chip away at any super high parts of the brick. Use a strong construction adhesive at all contact points, then use 2 1/4 inch Tapcon screws every 12 inches for the 3x5 Durock sheets. Not sure if I need to tape and mud all joints and corners, though ???

Construction adhesive is flammable and shouldn't be used in this application

 

[bholler]

What did you "shoot" the metal lath with ?

A powder actuated nailer I am assuming

 

[begreen]

Hogwildz documented the whole process in a few threads in the DIY forum. Moving this one over there.

Installing stack stone - How much mortar to use / how thick?

Hi, I'm in the process of installing stone veneer panels around my gas fireplace (pic below). I've used this forum and have properly prepared the wall (cement board, etc.). The fireplace is in a corner of the room, and I'm running the panels all the way to the corners, so I need to miter cut...

www.hearth.com

 

[Hogwildz]

What did you "shoot" the metal lath with ?

A Hilti gun, Powder actuated shots & washer pins

 

[bholler]

A Hilti gun, Powder actuated shots & washer pins

We use those and short masonry nails you can drive by hand as well. We use a magnetic hammer and one whack and they are in. Those are much faster but don't hold as well. So we usually use the Hilti on the edges and any corners then fill in with the others.