Hello,

When backpriming T&G solid sawn wood, is it best to prime the tongues
and grooves, or not? On the one hand, sealing all sides is good; on
the other, it would be easy to get excess paint in the corners which
could interfere with the mating of the T&G. But the groove is
typically 1/16" wider than the tongue, so perhaps that's not really an
issue.

Thanks, Wayne