How to Choose a Topcoat When Refinishing Cabinets

Identify the original topcoat of the wood first, if at all possible. Unless all of the original finish is removed, there is a risk that the topcoat you choose may be incompatible with the wood. For example, polyurethane can only be applied to unfinished wood or where a polyurethane coat has been used before. Incompatible topcoats will not only disturb the appearance of the wood, but also affect durability.

Compare the application process for various topcoats. Topcoats can be wiped on with a rag, applied with a brush, or sprayed on. Wipe-on and brush-on finishes are typically less messy, less odorous, and are easier to use. Spray-on finishes require some expertise to apply, but can provide a flawless finish when used correctly.

Choose the finish that will create the appearance you want the cabinets to have. Penetrating wood finishes, such as tung oil, retain the natural beauty of the wood without shine. These finishes are easy to apply and maintain. Film-forming topcoats -- including lacquer, shellac, and varnish -- remain on the surface of the wood and are typically more durable than their penetrating counterparts. Film-forming topcoats will also provide more sheen, especially if applied in layers. In any case, the finish can be clear or tinted to provide the final appearance you desire.

Stick to the topcoat you have selected, even down to the brand. Changing topcoats in the middle of a project will not only create a strange final appearance for the cabinets, but can also affect the wood. Incompatible finishes can cause the wood to crack or peel, requiring you to begin the refinishing process all over again.