How to Choose Polyurethane Varnish

Examine the wood you intend to protect. Look at the color of the wood. For example, choose polyurethane varnish if your wood cabinets are constructed from a dark wood. Polyurethane varnish has an amber tint in its color and can dry with shades of yellow. Choose a clear lacquer finish for lightly colored surfaces.

Choose your level of shine. Pair the level of shine to the age of the wooden object. Polyurethane varnish is available in variations from flat, non-reflective to glossy and highly reflective. Apply a flat varnish to an antique desk, for example, to maintain the aged look of the object. Employ a glossy varnish to a contemporary wooden bookcase to maintain a modern feel.

Think about how often you use the wooden object. Polyurethane varnish is thick and hard to remove. Choose polyurethane varnish for wooden objects you use on a regular basis -- a coffee or kitchen table, for example -- while an oil finish is ideal for preserving the soft and sleek look of bedroom furniture.

Count the hours you can devote to the application process. Pick a polyurethane varnish if you have at least one full day to tend to your object, since each layer requires drying time. Choose a fast drying shellac or lacquer alternative for a quicker seal. Polyurethane varnish requires 24 hours for one coat to fully dry before additional applications are possible.

Decide if you want to brush. Applying polyurethane varnish with a synthetic fiber brush helps you maintain even layers. Spray-on polyurethane varnish may result in uneven applications, which can distort the appearance of the finished product.