I should start by stating that I have very little experience with wood finishing, but I have done my share of reading on the topic. I purchased a pre-finished natural cedar tabletop last year (finished with Hellsman spar urethane). About mid-summer, I started to notice bubbles appearing on the knots (and only on the knots). During the winter, I stripped the table down to the bare wood. I applied 2 coats of Bulls Eye Sealcoat (apparently can be used under spar varnish) to seal the knots, assuming this would prevent the knots from bleeding again. I followed this up with Epifans high gloss varnish. I applied several coats with graduated amounts of thinning according to the directions on the can, then finished with 2 coats of 100% varnish. The table was finished about 2-3 weeks before it made its debut outdoors.
On the first day with direct sun, the table was covered with blisters (not just on the knots). I have read this may be caused by the shellac, but I’m not sure? I’m quite frustrated with the result at this point, and before stripping the table again, I’d love to get some advice or suggestions on what might have gone wrong or what I should try next. I imagine it shouldn’t be that difficult to get a good finish on a piece of wood to use outdoors.
I’d appreciate any help on this. Thx.
On the first day with direct sun, the table was covered with blisters (not just on the knots). I have read this may be caused by the shellac, but I’m not sure? I’m quite frustrated with the result at this point, and before stripping the table again, I’d love to get some advice or suggestions on what might have gone wrong or what I should try next. I imagine it shouldn’t be that difficult to get a good finish on a piece of wood to use outdoors.
I’d appreciate any help on this. Thx.
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