Discolored teak trim

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Discolored teak trim

Postby OregonJim » Fri Nov 08, 2019 6:26 pm

I am in the process of refinishing the teak trim on my GB 32 woodie. The trim at the bottom of the two middle windows on the port side have black staining or some kind of discoloration around the bungs that must cover the fasteners. This shows up nowhere else on the boat. They seem resistant to sanding. Any ideas to the cause or the cure?

Thanks
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OregonJim
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Re: Discolored teak trim

Postby Richard Werner » Fri Nov 08, 2019 7:46 pm

The pictures are too small to see the details of the discoloration.
Can you remove the trim, clean it up and then re-bed? I think there have been a number of posts about cleaning up dark spots on teak.
Maybe someone used something other than silicon bronze screws to hold the trim in place. If the wood has a high moisture content it may be difficult to sand - there may be moisture getting to the wood either through the bungs or the bedding to the glass.
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Re: Discolored teak trim

Postby gsanchez » Sat Nov 09, 2019 7:24 am

I have successfully used Teak Wonder to get rid of dark spots on teak after removing old varnish.

The brightening component in Teak Wonder is a mild bleaching agent.

Or you could use oxalic acid or other bleaches.
Gilberto
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Re: Discolored teak trim

Postby OregonJim » Sat Nov 09, 2019 2:24 pm

Thanks for the ideas. And I'm trying a larger picture.
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Re: Discolored teak trim

Postby Charlie0 » Sat Nov 09, 2019 3:53 pm

Hard to tell from the picture but they look like water stains. And the water appears to be coming from what appear to be bung plugs? Probably from the back side of the trim through the screw holes. You might want to pull a bung plug and screw to further inspect to see where the water originated. Repair the leak(s) before refinishing.
Charlie O
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