Slate Tiles?

[Xabia Jim]

Anyone use slate in their oven?

I was thinking it would hold up fine since it's a natural "earth fired product"
(metamorphic rock that is)

....just an inquiring mind with some slate tiles saved from the dump.

[Les]

X Jim,

I was told to only use natural stone or porcelain. We have issues here of freezing and ceramics / slates will pop. I was even advised to stay away from granite but I know people that have used it.

[vincent]

for a product to be used outdoors it has to hve the ability to resist the absorbtion of water...a porcelian tile is very dense..its fired differently than a ceramic or vitreous tile..which makes it acceptable for outdoor use....slate is a very dense natural product which resists the absortion of water and to my understanding its also acceptable for outdoor use...the other thing i would be sure of is the mortar used for installation..i'd be sure that it also is for outdoor use