Get matched with top countertop and backsplash pros in Clarkton, MO

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.

If you want your butcher countertops to last the typical 20 years, you should seal them monthly. Most homeowners use either oil or polyurethane, which helps repel water from the porous material. Keep in mind that if your countertops are in a kitchen, you’ll want to use a food-grade sealant. Tung oil, mineral oil, and beeswax are all popular options.

The angle at which you cut countertops depends on the material, your intended outcome, and the location of the cut. For example, rather than cutting a straight 90-degree angle for internal corners, cut edges at a 45-degree angle to give a clean, professional look. For outside edges, most homeowners want squared-off sides, so 90-degree angles can make the most sense there. Because you want to get angles exactly right to minimize seams and eliminate the need for patching, be sure to measure several times before cutting and use the right equipment to get sharp, accurate angles.

Onyx countertops have pros and cons. If you seal it properly and take care not to damage it, it can make a good countertop surface. However, it's more often used in bathrooms, where it’s less likely to sustain damage. Having an onyx kitchen countertop is possible, but you’ll need to take extra care not to burn, stain, or otherwise damage the material.