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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.

The average countertop square footage in a kitchen is 30 square feet, but that number varies widely depending on the size of the kitchen. Some smaller kitchens may only have one stretch of countertop or an L-shape. Larger kitchens can include an island or peninsula and more expansive countertops. When deciding what works best for your home, measure your kitchen countertop and make sure to include countertop cost calculations in your budget.

Solid surface countertops are fairly resilient. You can use soapy water or ammonia-based cleaners. You can also occasionally use diluted bleach (around 5 tablespoons per gallon of water) for sanitization. Avoid window cleaners because they leave a waxy film that can dull the countertop’s surface. Solid surface material is nonporous, so there’s no need for sealing.

While no countertop material is truly “heatproof,” granite countertops are extremely resistant to high temperatures. Some types of granite can withstand temperatures up to 1,200 degrees Fahrenheit. However, we don’t recommend placing hot pots and pans directly on granite countertops. Even if it doesn’t scar the granite, it may damage the sealant.