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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.

Silestone® is heat-resistant, so it can handle moderately high temperatures for a short period of time. That said, exposure to high heat can cause serious damage. You should never take a hot pan off the stove and place it directly on your countertop. Temperatures above 300 degrees Fahrenheit can leave marks or discoloration on the surface. Instead, use a trivet.

When installing an undermount kitchen sink in a granite countertop, use 100% silicone to secure the basin. If you’re worried your sink is too heavy, speak with a countertop professional about how to adhere the sink to the countertop without worrying about issues down the road. Sagging undermount sinks can be a common plumbing problem if they’re not properly adhered, so always make sure you’re using a high-quality material.

The cost to install a kitchen island can range from $900 to $6,500, with an average price of around $4,800 for most homeowners. The final cost depends on whether you choose a prefabricated or custom-built option. It is generally cheaper to buy a prefabricated island than to build one from scratch. A budget-friendly prefabricated cart can cost between $150 and $900, while a permanent prefabricated stationary island costs from $900 to $5,000. Custom-built kitchen islands average $4,800 but can cost $10,000 or more, depending on factors like materials, size, design complexity, and accessibility.