Spar Varnish vs Polyurethane


Just refinished wood grained fiberglass exterior door & would like to know if spar varnish or polyurethane should be used as the finishing coat. What brand is the “best”?

2 Responses

  1. Use a spar varnish. My favorite is Man-o-War marine spar varnish. You can also use an exterior waterborne polyurethane.

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