Using Limestone for oven floor

[jeemann99]

My friend has a granite shop and has a piece of Grayish Limestone he had left over from a countertop 1 1/4" thickness and 4ftx4ft. I can have him cut to specs, but want to know if using this as the surface and using insulating firebricks underneath would be good enough without issues. Do I need to treat the limestone in any way?

thanks in adance

[Tscarborough]

You need to not use it for the floor of your oven.

[SCChris]

The crystal structure of limestone isn't stable under the heat that WFOs get into. You'll be fighting it falling apart in short order.

Sorry.

Chris

[SCChris]

Originally Posted by wotavidone

On the other hand, supply it with a nice solid supporting frame, perhaps seal it with something, and I imagine it would be a lovely prep surface.

Oh yeh!

Chris

[jeemann99]

what about soapstone I can get that too in 1 1/4" thickness. Will that work well as a cooking surface ontop of my insulating bricks

[Lburou]

Limestone, wherever you incoorporate it, is going to wear easily and produce a powdery surface with use....unless it has turned to dolomitic limestone, which is a bit harder.

[jeemann99]

What about Soap stone I can ge that too

[Lburou]

Originally Posted by jeemann99

What about Soap stone I can ge that too

While soapstone does absorb and hold heat well, the reviews are mixed on soapstone on the oven floor. Here (Soapstone vs Firebrick ??) is a good informational link on the subject. Keep searching, your friend will have something you need

[johnn34]

Yes, you can give any shape to limestone tiles because these are flexible. You can use limestone tiles on flooring, countertops and walls.