My latest puzzle has been finish or varnish for cabinets. I have received a whole lot of wrong information. I would like to post what I think I have worked out to be correct and would like to invite anyone to adjust the record if I have it wrong.
First, is varnish the same as finish? Many salesmen seem to assert quite authoritatively that it is, but the mild-mannered, experienced custom cabinetmaker I was speaking with lately was rather puzzled by the question, finally settling on "no", and I understand now why he was puzzled. A varnish is a class of finish; there are many other types of finishes than varnish. But 'finish' and 'varnish' are not equivalent or analagous terms, the latter is a subset of the former. It is a testament to the persuasive powers of these salesmen (and my gullibility) that I was believing them over the actual worker.
But here:
http://www.google.com/products/catalog?q=cambro&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&cid=3825318520796488083&ei=CJpLTcHVBYa0lQfsmpw8&sa=X&oi=product_catalog_result&ct=result&resnum=7&ved=0CGsQ8wIwBg#
is a link to a professional finishers article that really lays out how these terms differ. It is a very interesting read! Some brief highlights abstracted:
A finish, I believe, is a general term for a variety of products and processes designed to protect and burnish a piece of wood.
A varnish is a specific type of finish that utilizes synthetic resins in addition to oils to cure wood very durably. Protection and durability is achieved via polymerization, a natural process of curing that oils facilitate (which by themselves are considered another class of finish), and which is amped up by adding synthetic resins.
"Catalyzed varnish", I believe, is a misnomer - the catalyzing agent is an acid in the form, often, of urea formaldehyde (isn't that the baddie we were all trying to avoid in press board???). It is added to a lacquer, not a varnish. Lacquer is yet another class of finish (there are many besides these mentioned here). I think it is easier to apply than varnish; varnish is more durable. Among all the finishes there is a tradeoff between such considerations as application, safety, durability, etc.
The catalyst added to a lacquer initiates a chemical reaction, resulting in a more durable finish than is achieved from lacquer applied without the catalyst. Thus the catalyst confers the durability of varnish, in the easier-to-apply lacquer finish.
This durability comes at a price to the environment and I am guessing, our health in the form of long-term off-gassing from the formaldehyde-catalyst? This I don't know for certain, but I seem to recall that formaldehyde was the culprit avoided with low-VOC plywood. So I guess it's possible that taking delivery of a product finished in this way suggests a tradeoff with one's personal concern for the environment and possibly the long-term health of the kitchen's inhabitants. Dunno; about this I plead pretty thorough ignorance.
So now, a question. It seems pretty well agreed upon by all that a catalyzed finish is best. How necessary is it? My cabinetmaker hazarded a guess of 10-15% more protection. Is that worth the environmental and health hazard? Can anyone speak to this? I'm not even sure the catalyzed lacquer can be applied here (legally) in California... [though according to this guy there are California-compliant finishes that are just fine: http://www.carltoncabinets.com/FAQ.htm]
I've heard it claimed that the 'baked' aspect of the big-guys' cabinet's finishes is just fear-mongering, that heat just speeds up the drying process but the real durability is conferred by the chemical catalytic reaction, independent of heat.
Which, btw, reminds me: someone wondered aloud why so many of the big cabinet makers seemed to be located on the east coast, never in California. It may be that the air quality laws in California force construction to other states, for better or worse.
Here is a link that might be useful: Fantastic article about wood finishes, including catalyzed lacquer
ncamy
aliris19Original Author
Related Professionals
Gainesville Kitchen & Bathroom Designers · Ocala Kitchen & Bathroom Designers · Topeka Kitchen & Bathroom Designers · Sedalia Kitchen & Bathroom Designers · Fayetteville Kitchen & Bathroom Designers · Greensboro Kitchen & Bathroom Designers · Flint Kitchen & Bathroom Designers · Grand Island Kitchen & Bathroom Designers · Anniston Kitchen Remodelers · Muncie Kitchen Remodelers · Syracuse Kitchen Remodelers · Toms River Custom Countertops · Ottumwa Custom Countertops · Muncie Custom Countertops · Los Angeles Custom Countertopsartemis78
aliris19Original Author