Will a Slate Hearth Expand?

Most materials expand when they are heated and contract when they are cooled. For this reason, when installing a new fire hearth you need to allow for expansion gaps. ... Slate Hearths will a expand a little less. Granite Hearths will expand the least.

Will slate hearth crack?

Strength really has nothing to do with a hearth surface. You can have glass, and as long as it's properly supported underneath, it won't crack. For there to be a crack, there needs to be some give. There should be no give at all in a proper install.

Does slate make a good hearth?

Slate is a naturally occurring sedimentary rock that serves as an excellent material for hearths. Slate has a unique, uneven texture and riven and smooth slate is available.to order in bespoke sizes up to 1150mm x 1000mm. ... Slate hearths have excellent fire resistance and are extremely tough.