What are the drawbacks to priming an area and
never putting on a topcoat? Of course, the primer
is flat, and the existing topcoat may be gloss
(seems to be a bit shiny).
I am doing exterior repairs. Some new wood, some epoxy,
some painting over old existing paint.
If you don't put on a top coat of exterior finish paint, you're wasting
your time. Primer is meant to seal a surface and has additional
bonding agents to make it stick. It is not designed to be exposed and
will not last.
If you are looking to "cheap out", that is not the way to go. Look for a
good brand of latex exterior paint that does not need a primer. Doing it
your way, the primer is not durable at all as it is designed to hold the
next layer, not block the UV rays and moisture.
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