The frequency of sealing depends on the stone type—granite, marble, and quartzite each have different levels of porosity. High-traffic kitchen counters may require more frequent attention than low-use surfaces. Always use a high-quality stone sealer and follow the manufacturer's application instructions, which usually involve applying the product, letting it penetrate for a specified time, and wiping away the excess. Proper sealing is the primary defense against staining and etching in stone countertops.
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How often should natural stone counters be sealed?
Natural stone countertops should be sealed based on their porosity and usage, typically every 6 to 12 months. An easy test to determine if sealing is needed is to drop a small amount of water on the surface; if it beads up, the seal is intact; if it absorbs, it is time to reseal.