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CV over pre-primed moulding7/1
Does anyone know what type of finish is generally used on the primed, fingerjoined moulding found at the lumber yard? I would like to spray cv over it for job, but am unsure if it will work. Maybe a vinyl primer first? I plan to do a test, just thought I'd check here as well. Thanks,
It would be safe to say it's a high solids waterborne millwork primer. I've sprayed thousands of feet of it with C.V. with no problems... Scuff and paint it!
I too have sprayed CV over the primed MDF trim and it sticks just fine.
I usually have no problem with the CV over the preprimed. But the last batch chipped at the miters... Seemed the primer never stuck to the wood from the factory
I've done this before, with spotty results.
Small things like pre-primed show mold, you're OK.
Large items, like the massive 8" pre-primed crown that I sprayed with CV last year, became a trouble-whore. The CV wanted to wrinkle. We managed to make it work, but not without much wailing and gnashing of teeth.
So, my final answer is, NO, we don't spray pre-primed in this shop without warning them that we are in no way responsible for any paint quality.
I was warned, clearly, by the very same Sherwin Williams rep that sells our local mills all this primer that their stuff is not usually compatible with CV in any predictable way. Some is, most isn't.