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Granite should be resealed every 12 to 18 months, depending on the color and usage. Lighter granite needs to be resealed more frequently than darker colors. If you use acidic cleaners or prepare food on the surface regularly, you must reseal the surface more frequently. Without proper sealing, granite is vulnerable to staining. You can tell if your countertop needs to be resealed by placing a wet paper towel on the counter for 10 minutes. If the water beads up, it is still sufficiently sealed; if it sinks in, it’s time to apply sealant.

It depends on the material. Sandstone, slate, and granite can be slippery in wet weather. Applying a sealant to the stone can often stop it from absorbing moisture and may reduce the likelihood of slipping. If you're concerned about losing footing, a safer option might be bluestone or concrete.

Stone is professionally restored and polished by cleaning the surface, removing stains and scratches, filling any cracks, and using specialized equipment to polish to the desired finish.

Granite and marble compare well against each other in terms of price, durability, and aesthetic appeal. Deciding which one is better depends on your personal style and preference. Both materials resist damage like chips and cracks well. You should seal both material types against staining and etching, but they’re still susceptible if oil, wine, coffee, tomato sauce, or juice are left on the countertop long enough. As material and installation costs range similarly, the deciding factor is your budget, design, and preferences.