Hi there! I am just completing the assembly of a pair of Phillipine Mahogany deck chairs. The Mahogany I used has some really beautiful grain, and I’d like to bring this grain out with a finish. The chairs will sit on my exterior porch year ’round. The porch has an overhang, so the chairs won’t get rained on directly (unless there are high winds). However, I am in upstate, NY so they will get snowed on occassionally. Can someone recommend a good exterior finish that will accent the grain and provide some moderate protection? It would be ideal to not have to renew it every year (it would also be ideal if I won the lottery – both probably have the same likelihood <grin>). Any tips would be appreciated…
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Replies
My recommendation would be to use a high quality marine grade spar varnish such as Epifanes or Interlux; they'll contain UV inhibitors and blockers. Both companies also make outstanding polyurethane varnishes as well. FWIW.
Dano
Urethane varnish is the way to go, but because it is water proof, if any uncoated part of the wood absorbs water, it will cause the varnish to lift off, so be sure to thoroughy coat all sides, and any fastener holes. Otherwise, water doesn't hurt much, but sun surely does so keep them out of the sun if at all possible.
Dave
If it's outside you need an exterior finish. Exterior finishes have more flexibility and UV inhibitors. Standard polyurethane will not last very long even in the shade. I'd recommend epifanes.com or penofin.com.
Paul
F'burg, VA
Thanks, Paul. The Penofin (Exotic hardwood) looks exactly like what I'm looking for. I appreciate the help!
I went to google.com and did a search for - consumer reports sikkens - there's some good info on the exterior products that have held up the longest as TJM pointed out. Penofin wasn't on the list. The info at this link - http://www.9news.com/consumer/deckstsains.htm - includes a mention that Consumer Reports is repeating the test with some new brands and some are doing better than the previous test.
Paul
F'burg, VA
How does the MinWax Clear Polyurethane Spar Varnish hold up long term? I recently made a tiller, centerboard plate, and winch base plates with mahogany for my small sailboat. I used the MinWax varnish and used three coats. So far so good, but it's only been a month. It definitely brought the subtle and beautiful grain patterns out in the wood, and didn't darken it one bit.
Mark
Hi -
I think one thing that needs to be said is that the Sikkens product is a film-forming finish as is the spar varnish and urethanes. The penofin product is an oil, non-film forming. This is important, aesthetically speaking. I've used both, and the Sikkens is great and long lasting, but definitely imparts a strong amber color to your wood. The Penofin also imparts a color - burgundy - though not as strong as the Sikkens, and it compliments mahogany nicely.
FWIW, I did some samples for a client of three finishes - Sikkens Cetol, Penofin Exotic Hrdwd, and Man o War Spar varnish. The samples were of both face and end grain (we used big finger joints for the table so both were exposed). The sample were about 5/8" thick. The penofin penetrated clear through to the other side of the end grain in about an hour! The sikkens did show some good penetration as well, but it is not as important to the success of that product since it relies on it's film for that.
-R.
I used Sikkens on a nice picinic table 4 years ago. It sits under a tree mostly all summer and is stored in the garage in the winter.
It still looks like the day I finished it.
Tim-
It sounds like Sikkens gave you really good results. I had never heard of their products before and it seems like they make quite a variety of finishes. Do you recall which specific Sikkens product(s) you used?
Honestly, I am leaning towards Penofin, but I'd like to investigate Sikkens some more as well. I appreciate your help - thanks!
I used Sikkens Cetol SRD. I think its made for decks. Its a 1 coat system that requires what they call visual maintainence, if it looks at all deteriorated just throw another coat on.
My house has rough sawn cedar siding. I used thier 3 coat system of cetol 1 and cetol 2 3 plus. On the south side I have to re-do every 5-7 years. North side 10-12 years. I used the same thing on my barn/work shop 15 years ago and the bottom 4 or 5 boards on the south side are in desperate need but above that its fine.
Ive seen houses done with penofin that need re-done every year.
I read in consumer reports on deck coatings Sikkens #1 cabbots a very close #2. I've never used cabbots but at almost 1/2 the price I think its worth a try. Sikkens is $45/gal.
I agree with everyone else that direct sunlight is your worst enemy, water is #2.
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