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Is it necessary to prime the cut ends of MiraTEC trim? I’m specifically talking about the ends that will be butted up against other trim, not ends that will be visable after completion.
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Brian,
Sure won't hurt anything, my experience is that the cut ends suck up alkyd primer with considerable thirst so I imagine that the eventual moisture intrusion is sure to be absorbed as well causing swelling, paint failure and other problems. I believe the installation specs on this product call for a alkyd or latex exterior primer on cut or machined surfaces, they allow some types of routing to change the profile if you stick to their ideas about limiting moisture exposure. The gist of the specs accompanying the material seems focus on painting the surface well, sealing cut ends well, taking care about fastening and what to do if your nail disturbs the surface in a way that may allow water intrusion. You get the feeling they don't want the stuff to get wet.
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Is it necessary to prime the cut ends of MiraTEC trim? I'm specifically talking about the ends that will be butted up against other trim, not ends that will be visable after completion.