May of 2023 I sanded all my teak to bare wood and then applied 3 coats of Sikkens Cetal natural teak. It looked incredible! I did NOT do a top coat of gloss. Then I learned to sail my new boat and the teak was no longer a priority because all I wanted to do was sail. Now 17 months later my teak is showing these black spots. I regret not putting more coats of cetol on this spring but too late now. How do I address these black spots ?
Teak black spots ?
- Thread starter BTC1984
- Start date
The finish is failing - you need to scrape off any compromised finish (use a cabinet scraper or something similar, doesn't remove more wood), sand the black spots out, lightly sand everything and re-finish with 3 coats. You can try the teak cleaners/whiteners if you want but it looks like some light sanding should clean it up. Try to put a new coat on every year or two and it will last a long time.
Unfortunately, the sealer is failing & water has penetrated beneath the sealer & into the wood, causing the black spots. Sand lightly to remove the sealer only & treat with teak cleaner two times or more to remove the spots. Light sanding will be required before resealing; however, more aggressive sanding may be necessary to completely remove the stains. I would re-coat with 2 to 3 coats of natural, followed by 2 coats of gloss. That protocol has worked well for me thru the years with finish lasting 4 years in this southern environment. Don’t know what effects repeated sub freezing temps & thawing in you locale would have. As @dmax mentioned, light sanding & reapplication of gloss would definitely improve the longevity without having to completely refinish.
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 22,214
Water beneath the sealed surface. I use the same prescription as @BigEasy has provided. I find it works in northern latitudes as well. Catch it now before winter.I like that you graduated from boat maintenance to sailing. Now one works on balance. How did that Pete Seeger song go "To every thing there is a season, and a time to every purpose under the heaven..."