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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.

Yes, Corian® and other solid surface countertops can be cut with standard woodworking tools like a circular saw or a jigsaw, but using the correct blade is crucial for the best results.

The recommended blade is a tungsten carbide-tipped blade, often called a solid-surface planer or triple chip grind blade. This type of blade is hard enough to cut through the material effectively. For a jigsaw, a fine-tooth down-cutting blade should be used.

It is important to note that a diamond blade is not necessary. Diamond blades are designed for harder materials like natural stone, concrete, or brick, and Corian is not a natural stone.

Using blades designed for wood is not recommended as they can cause microfractures that weaken the countertop's edges. While a tungsten carbide blade provides a much cleaner cut, the resulting edge will still be rough and must be sanded and smoothed to prevent microfractures from developing over time.

While epoxy resin is generally durable, it is not scratch-proof. Some sources state it is highly resistant to scratches from minor sources, while others note it can scratch and chip easily from sharper or heavier items. To prevent damage, always use a cutting board and avoid sliding heavy or rough-bottomed objects across the surface. If a scratch does occur, be aware that epoxy can be difficult to repair by sanding, often requiring an orbital sander for effective results.

The best way to save money on countertop installation is to choose an affordable material. For example, if you have a busy kitchen and need durability, choose a more affordable but lasting material like granite countertops. Likewise, if you don't use your countertops often, you can use a softer material that costs less than more sturdy ones. 

Another way to cut costs is to remove and dispose of the existing countertops yourself, if possible. That way, countertop installers can get straight to placing the new feature, reducing labor costs.