C O N S T R U C T I O N D E T A I L S
The Finish (top coats) - to protect and beautify
To preserve order and continuity, the discussion here will be limited to top coats. You can refer to the finish
options section of our catalog for information on stains and color.
While there are several processes and types of finishes possible, the overwhelming majority of wood finishes
on the market can be understood by dividing them into two basic groups: Solvent Finishes and Oil and Wax
finishes. Each of these types has their own set of advantages, benefits and limitations:
Oil and Wax
This two part finish begins with a coat of oil (often boiled linseed oil) which penetrates the surface of the wood,
offering a degree of protection and highlighting the wood’s natural color. After drying the piece may then
receive one or more coat of wax which is buffed into the desired degree of glossiness. Oil and Wax finishes
have the two main advantages - natural beauty and ease of application. For the manufacturer these finishes
require very little overhead investment in the way of special equipment or processing. They can be applied as
easily by an individual in his home as they can by a factory producing millions of dollars of merchandise a
year. As such, Oil and Wax also has some appeal as the preferred choice of traditional craftsmen. The
principle limitation of Oil and Wax finishes is durability. They provide relatively little protection from scratches
and dings and are extremely susceptible to water damage.
Solvent Finishes
This is a general term that applies to any number of finish types including Varnishes, Lacquers, Shellacs and
Paints. In this type of finish a solid component or resin is carried to the product by a liquid solvent. As
the finish cures the solvent evaporates and a solid film of resin settles on the surface of the piece. This creates
a hard, protective coat that is durable and, depending on the properties of the finish, can offer aesthetic
enhancements as well. In the furniture industry, the majority of all clear top coats are some form of lacquer.
The term lacquer implies that the resin is derived from Nitrocellulose fibers and can be subdivided into two
main subgroups: Conventional and Catalyzed.
Conventional Lacquers provide durable albeit not superior protection. If there is such a thing as a
furniture industry standard, conventional lacquers are it. Manufacturers opt for these finishes due to their
relative ease of application and
their highly forgiving nature.
Typically a manufacturer will apply
many layers of finish until they
have built up a thick coating which
can then be buffed into a high
gloss. The resin is soft enough that
it takes easily to this process. This
allows the manufacturer to take
fewer precautions with regard to
airborne dust in the factory and
runs in the finish. They know that
errors of this nature can be easily
repaired with buffing.
The limitations of conventional lacquers are: only moderate protection and a somewhat artificial look and feel.
Compared to their catalyzed relatives, conventional lacquers offer limited durability and protection. They are
comparatively soft and susceptible to water damage. The required thick buildup can also make a surface seem
to be synthetic or ‘plastic’. Depending on the raw materials used to build the furniture this may not be a
problem however with solid wood customers have the expectation that the finish look and feel as natural as
possible.
Wood Surface Wood Surface
Resin - Suspended in Solvent
Cured Finish
Conventional Lacquer
1
2
The finish is spray applied to the
surface of the piece.
As the finish cures, the solvent
evaporates leaving a hard,
protective coat on the surface.
9 May 2019