Red Seal Cabinetmaker Practice Exam

Which finish is generally considered the most durable for cabinets?

1. Water-based finish

2. Polyurethane finish

3. Shellac finish

4. Wax finish

The correct answer is: Polyurethane finish

The polyurethane finish is renowned for its durability, making it a popular choice for cabinets. This type of finish creates a tough, resilient coating that can withstand wear and tear from daily use, including scratches, stains, and impacts. Polyurethane is available in both oil-based and water-based formulations, with the oil-based variety offering a slightly more durable surface due to its higher build and resistance to abrasion. In addition to its toughness, polyurethane also offers excellent moisture resistance, which is crucial for kitchen and bathroom cabinets that may be exposed to humidity or spills. Its ability to form a protective barrier makes it particularly effective in maintaining the beauty of wood cabinetry over time. Other finishes, while having various advantages, do not provide the same level of durability. For example, water-based finishes are less toxic and dry faster but may not offer the same hardness as polyurethane. Shellac finishes can provide a beautiful, warm tone but are not as resistant to water and chemicals. Lastly, wax finishes are more about aesthetic appeal and ease of application, but they require frequent reapplication and offer very limited protection against damage. Therefore, when considering durability for cabinet finishes, polyurethane stands out as the superior choice.