101.   Water-based polyurethane varnishes have a bad habit of staying milky.

102.   When it comes to applying a finish to wood, most do-it-yourselfers automatically reach for a can of polyurethane varnish.

103.   With prefinished flooring, you eliminate the sanding and three coats of polyurethane varnish or any other finish.

104.   You could try painting that line with polyurethane varnish, or even an oil-based enamel to match the color, but this is only a stopgap.