SQA National 5 Design and Manufacture Practice Exam 2025 - Free Design and Manufacture Practice Questions and Study Guide

Varnish is primarily known for its durability and water resistance, making it an ideal finishing method for various wooden surfaces. It forms a hard, protective layer over the material, which not only enhances its appearance by adding a glossy finish but also guards against moisture, dirt, and wear. This protective barrier is vital for items exposed to the elements or frequent use, such as furniture, cabinets, and outdoor structures.

Other finishing methods differ in their characteristics and applications. Oil finishes, for instance, penetrate the wood and enhance its natural color but do not provide the same level of protection against moisture and abrasion as varnish does. Wax provides a soft, natural finish and enhances the sheen but lacks the durability and water resistance to protect the wood effectively over time. Paint offers a good level of protection and is quite durable, but it may not have the same water-resistant properties as varnish and often obscures the natural grain of the wood. Thus, varnish stands out as the preferred choice for applications where durability and water resistance are crucial.