Paints & Coatings Resource Center

Ask the Expert Question-and-Answer Archive

by Ron Joseph

March, 2006

Baked on Epoxy for Wood Windows

Q. I'm an architect in Berkeley, working on an historic house. All the existing windows are to be replaced with new, custom wood windows. For aesthetic reasons I don't want to use a clad window and am looking for a priming & painting system which will require minimal maintenance, especially on the west-facing windows which recieve a lot of solar abuse. "A baked on epoxy paint" is a term thrown around a lot, but I haven't been able to find anybody who actually knows how to go about acheiving this, who the suppliers and finishers are. Do you have any information?

A. Truly baked coatings are applied and cured in painting facilities and not on-site. I assume that the term "baked-on" in your context implies a finish that is equivalent to a baked-on finish. Unless you are referring to an epoxy polysiloxane I would not recommend the use of an epoxy as these resins tend to chalk when exposed to sunlight over long periods. Epoxy polysiloxane has been reported to do better. Polyurethanes are also used for exterior exposure, but no matter what system you select, you must confirm that will be able to flex and expand with the underlying wooden substrate.

If you would like to discuss alternative finishes for wood, we will be happy to assist you on a consulting fee basis. We will then identify each alternative and give you the pro's and con's of each.

Best wishes,

Ron Joseph

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