Total Posts : 35
Joined Date : Apr 9, 2007
I have used Kamar Varnish on a clayboard watercolor painting. It has been unframed for over 2 yrs, and gone though some adverse (in a garage under papers or on the wall exposed to inirect sunlightlight) conditions. It has held up extremely well, with no cracking or yellowing.
The image did not change too much. I think this is due to the clayboard being so porous and textured...so it does not have the seemed encased in resin look.
As far as varnishing watercolor...is watercolor pigment exposed to air, or surrounded by the waterbase binder? I know pastels are exposed to air and dust quite easily.
If watercolor is defined as painting with just water soluble binders that can be rewett, then a non water soluble varnish would alter the ability to rewett the paint (thus it the varnish provides protection).
Am I correct to assume a watersoluble varnish, such as gum arabic (takes effort to rewett without humectants) should be acceptable as a watercolor. There are many watercolor mediums on the market...gum arabic is one, It is sold as a medium that produces more brilliance, gloss and intesifies the piece. It is sold by winsor&newton along with other watercolor manufacterers. So if this is acceptable...why would a gum arabic based varnish not be acceptable.
Am I also correct in calling gum arabic a waterbased resin? If so why would other resin based varnishes be unacceptable?
These are only my opinions...and I may be off base...I'm sure I can expect (and look forward to) any misifnformation I have stated to be corrected with more accurate info.
Paint d-mn you! Paint!
Jun 12, 2008