I can provide general advice on how to seal wood countertops to protect them.
To protect wood countertops in the kitchen, you can use a food-safe finish or sealer that provides a durable and water-resistant surface. Some popular options for sealing wood countertops include:
Mineral Oil: Mineral oil is a natural, food-safe option that brings out the wood's natural beauty while providing some water resistance. However, it requires regular reapplication.
Beeswax and Mineral Oil Mix: A combination of beeswax and mineral oil can create a protective and food-safe seal for wood countertops. The beeswax helps to provide a more water-resistant barrier.
Polyurethane: Polyurethane is a durable and water-resistant sealant commonly used on wood surfaces. However, for kitchen countertops, you must use a food-grade or non-toxic polyurethane to ensure it is safe for contact with food.
Tung Oil: Tung oil is a natural, water-resistant finish that provides a beautiful, low-sheen look to the wood. Ensure you use a pure tung oil without additives for the best results.
Waterlox: Waterlox is a tung oil-based finish that is specifically designed for use on wood countertops and cutting boards. It offers good protection and is food-safe once cured.
Varnish: Like polyurethane, you can find food-grade or non-toxic varnishes suitable for wood countertops. It provides a hard and durable finish.
Before applying any finish or sealer, it's essential to prepare the wood surface properly by sanding it smooth and ensuring it's clean and dry. Follow the manufacturer's instructions for the chosen sealer, and apply multiple coats as necessary to build up the desired level of protection.
Keep in mind that wood countertops in the kitchen require regular maintenance and resealing to keep them in good condition, as they are exposed to moisture and other elements. Always choose a finish that is safe for food contact and consider how much use and wear your countertops will endure when deciding on the most appropriate sealing method.