Do You Sand The Last Coat Of Polyurethane. Stone head, we have refinished a lot of floors. It is over top of a coat of dark walnut stain that i did last week. (ugh, doesn't that suck, now you have to keep reading!).

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The more you sand the top coat, the more the finish will dull. Well first, polyurethane protects your paint and makes it last a whole lot longer. Yes, as long as you sand the shiny coat off carefully with a very fine grade sandpaper and wipe down after.

Also, what kind of minwax varnish do you have in mind?

Is the wood surface planed flat? Also, should i sand after applying the final coat of poly, or not? ;) i'm finishing a table top with polyurethane. (if you want to reduce dust nibs, thin the last coat of polyurethane by 25 to 50 percent so it dries faster.) additionally, because penetrol is an oil, it can't help but weaken the. Sanding between coats of polyurethane. Do not sand the last coat of polyurethane varnish. Never sand a tacky surface as the grit of the sandpaper will quickly become clogged with the polyurethane material. The more you sand the top coat, the more the finish will dull.