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i am finishing a new teak sailboat floor. I would like the finish to be smooth. how should I fill in the grain before applying the polyurethane varnish. Aslo, would the first coat be just a thinned poly or would a sanding sealer be better?
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Sand the floor smooth first. No filler is required. Apply the first coat of varnish thinned in accordance with the manufacturer's instructions. Allow to dry 24-48 hours and put on two to three more full strength coats waiting 2-3 days for each coat to dry and then sanding lightly with 320 sandpaper.
Do not use any sanding sealer or you will have adhesion problems. Be sure to purchase good marine interior varnish.
Varnish is applied by flowing it on, not by brushing or you will get bubbles. You need to flow it on and follow up by "tipping" it with an almost dry brush. You also need a good china or sable brush.
*Thanks for the reply. I have not used the filler as you recommended. However, I do not understand how you flow the ureathane varnish on to the surface. The surface of the floor is curved.
*When you "flow" on a finish you are not pressing on the brush. You hold the brush in such a way that the bristles hardly bend at all.
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