What Happens If You Heat Granite
High heat can cause granite sealers to become dull and cloudy.
What happens if you heat granite. Repeatedly placing hot dishes on the countertop right out of the oven can leave black marks on the surface or potentially cause thermal shock and cracks. What is thermal shock. Stick on heating mats for granite and stone countertops are becoming a popular luxury item for both existing and new countertop installations. Placing hot pots hot pans and hot items in general will not damage your granite countertop.
In addition quick changes in heat can lead to weak spots like natural fissures in the stone. Granite is a natural stone mined from quarries located around the world. If you do happen to stain your granite it is likely that you can undo the damage. Granite is very heat resistant but countertops can still be damaged by hot pots and pans.
That said over time exposure to excessive heat can weaken the seal on your granite countertop which in turn can leave the surface more exposed to staining liquid damage etc. The ultra thin mats simply stick on underneath the stone warming up the surface about twenty five degrees. This is because the sealant and finish on granite is not as heat resistant as the stone itself. An extreme heat source over an extended period could damage granite surface.
Granite will resist damage from heat. How to separate granite countertop pieces.