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Old 03-20-2019, 08:17 PM   #5
Veteran Member
City: Ft. Myers, FL
Vessel Name: Hannah Jane
Vessel Model: 2000 Grand Banks 42 Classic
Join Date: Feb 2014
Posts: 76
I figured I'd post a photo of sealed deck fill as a way to wrap up this thread. I did a lot of reading online and decided to give this suggestion a try. My Waste fill was looser than the fuel fill so I started with it. It would be nigh on impossible to reach the fill from the engine room without removing my A/C units.

I unscrewed the fill and took a small, round Dremel engraving bit and undercut it about a 1/4" deep and 1/4" back under the lip of the fill. I taped off a circle about an 1/8" larger than the fill lip with blue tape and used Teak Decking Systems black caulk to fill the space. I took a small plastic stirring stick and smoothed the caulk as best I could then left it for two days to cure.

Since the caulk was now firm, when I screwed the fill back down, it compressed the caulk a little bit and made a nice, tight seal.

It just rained 3/4" yesterday and no leaks! The photo shows the duct tape residue that I have not yet cleaned off. I also need to sand the caulk a bit to smooth the circle out.

Starting on my starboard fuel fill tomorrow.

Click image for larger version

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