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shtoink 05-01-2010 12:17 AM

ceramic tile over lath and plaster wall?
I am about to prepare to install a wood stove in a corner in my 100 year old house. The stove will be positioned at an angle in the corner and all necessary clearances will be met. I intend to install ceramic tile about 4 feet up the 2 walls in this corner. These walls are lath and plaster and are flat and smooth. The plaster seems to be in good shape.

What (if anything) do I have to do to prepare these walls for installation of tile? Any advice regarding this installation is appreciated.


oh'mike 05-01-2010 06:42 AM

I'd be a little worried about the stability of 100 year old plaster---

However--If you're confident that the plaster is good--I would use unmodified thinset with a liquid latex additive. That will give you maximum sticky and flexibility.

I guarantee that will stick to the antique walls--There is a good possibility that the old paint or plaster might give up--but the thinset will not.--Mike--

tpolk 05-01-2010 07:25 AM

i would consider spacers with long screws into the framing thru durorock,then tile that

shtoink 05-05-2010 05:50 PM

Thanks for the advice!

I think I will put up durock first and install the tiles on that. I have thought about the weight of the tiles and don't want to risk failure of the plaster.

tpolk - you recommend spacers behind the durock - is this a heat shielding consideration?

For aesthetic reasons, I would prefer to have the durock directly on the wall - screwed into the studs. If directly on the wall, would a thinset or adhesive make a difference or would screws be sufficient?

tpolk 05-05-2010 07:42 PM

the spacers help to limit heat transfer, allows for venting. you could finish edges and leave top open

oh'mike 05-05-2010 09:29 PM

The Durrock can be screwed to the wall without any additional stick-um behind it. That would make removing the thing easier in the future.

Be sure that you use thinset to install the tiles--mastic might not hold up well to the temperatures.

I heat my house with a wood stove--I just use the furnace as a back-up.

TPOLK's suggestion of adding spacers is excellent--Just nailing --or screwing--1x2 vertically every 12 or 16 inches--like an ordinary furring strip--will allow you to get the tiled surface quite hot without worry about the actual plaster getting to hot.


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