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The frequency for sealing granite countertops depends on several factors, including the type of sealant used, the color of the granite, and how heavily the countertops are used. As a general guideline, resealing is often recommended every 12 to 18 months, but some sources suggest it could be as often as every few months or at least once a year.

The type of sealant is a major factor: water-based sealants may need reapplication every six months to a year, while more durable solvent-based sealants can last for five to 10 years. Additionally, factors like heavy kitchen traffic, frequent use of acidic cleaners, and lighter granite colors may require more frequent sealing to prevent staining.

To determine if your countertops need resealing, you can perform a simple water test. Place a few drops of water or a wet paper towel on an inconspicuous area of the granite. After 10 to 15 minutes, check the spot. If the water has beaded up, the seal is still intact. If the water has been absorbed and darkened the stone, it's time to apply a new coat of sealant. You can choose to seal the granite yourself or hire a professional to ensure it's done correctly.

Granite is heavier than quartz, since it has a higher density. Quartz is made up of engineered stone, which is why it tends to weigh less than granite. Most granite countertops are ¾-inch thick and weigh about 13 pounds per square foot.

Concrete and granite are both extremely durable materials. One isn’t necessarily better than the other. It depends on what you’re looking for. That said, granite is less costly and requires less maintenance. Furthermore, concrete is more prone to staining and cracking, though you can patch the cracks using a concrete patching compound.

Different types of engineered stone countertops require varying installation methods. The best option is to hire a countertop installer, especially if you are unfamiliar with the stone you plan to use. Generally speaking, quartz is the easiest for DIYers because you can cut it on site with a diamond blade and diamond hole saw. The average DIYer is unlikely to have the special tools to cut sintered stone countertops. Before diving into a project, make sure you have the experience and tools to do the job correctly.