Best primer for plywood shop walls

There was a phase I went through about 15 years ago where I was making and selling corn hole boards, primed for a guy who did custom painting. I used at one time or another all of the commercially available primers, and came away feeling BIN (Zinsser product) was the easiest to apply, and the guy I was making for said they were a dream to paint over. The boards were spec’d to be outdoors a lot, something you don’t need to worry about, so cost could also be a consideration.

-- Think safe, be safe

+1 on the BIN, and let it dry / cure well between coats. If you have larger knots go back and hit them again.

-- Live to tell the stories, they sound better that way.

KILZ Primer?

-- A Planer? I'M the planer, this is what I use

If the knots are sappy, you need the alcohol based white shellac by Zinser, at least for a couple coats over the knots.

Something cheap. Check on Kilz it’s on bogo fairly frequently.

-- Everything is a prototype thats why its one of a kind!!

If the knots are sappy, you need the alcohol based white shellac by Zinser, at least for a couple coats over the knots.

- ibewjon

I think the plytanium doesn’t have knots, but if any does yeah shellac. Otherwise, any good oil-based primer works well. Zinsser cover stain, Kilz, etc. Fyi, most places will tint your primer to somewhat match your topcoat to get a better color match. If you use white primer it will make the finish coat lighter.