Temperature Considerations for Granite and Natural Stone Countertops
Granite countertops in Sioux Falls have a reputation for being extremely durable, but there are still some temperature extremes that can cause serious harm to the material. Homeowners interested in preserving their countertops for a long time to come should take care in not subjecting their counters to any unusual temperature extremes, particularly sudden temperature changes.
Temperature Shock
Temperature shock occurs when a material is subjected to a relatively cold temperature and then a relatively hot temperature quickly. It can occur if someone places a tray from the freezer on the granite and then later puts a hot dish on the granite. It can also occur if the room temperature granite suddenly has something like a pan straight from the oven placed on it. When temperature shock occurs, granite -- and any other material -- is likely to fracture or shatter.
Fractured granite is not dangerous, but it is almost impossible to fix. Though the slab can be mended, it will usually still show the damage visibly. The only way to restore the previous appearance of fractured granite is to replace it entirely. So, though granite is often marketed as being "temperature proof," it really should be treated as any other counter surface.
Surfacing and Sealant
Even moderate temperatures can affect the surface coating of the granite, though this is a less permanent issue. Hot plates can disrupt the sealant that is used to bring the surface to a high polish, making it dulled or scratched. This can be buffed away and resurfaced, but it's still not ideal. Particularly cold items, such as ice cold drinks, can also damage the sealant on granite over time. To avoid these issues, a granite owner should make sure to regularly seal their granite, use coasters, and avoid any overly cold or hot items directly on the surface.
In general, though granite is a remarkable counter material, it should be treated with the same care as any other counter type. Though it can withstand a hot pot or pan being placed on it occasionally, it's not a good idea to do so habitually -- especially with items that retain more heat, such as cast iron. Day-to-day environmental temperature extremes are not likely to affect granite.
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