I have read the sticky on butyl tape, as well as a bunch of other posts.
This chainplate seems a bit unusual, and I would appreciate any knowledgeable input.
The plates run perpendicular through the deck, then mount on a pillar of sorts inside. There is no structural hardware through the deck or hull.
They pass through this slotted plate, which is fastened by machine screws.
Un the inside of the cabin, they go through a hollow pillar, with reasonable access to the inside. They are fastened to the inside of the boat with carriage bolts and backed by washers.
The inside of the boat against which the plates are fastened, is quite discolored and gunky. This is fiberglass.
The inside of the plates is also gunky.
So- I have three surfaces to clean.
2- Cabin liner.
3-Insides of slotted plate and chainplate.
What chemicals, if any, are ok on these surfaces?
What tools can I use? how abrasive is ok on these surfaces?
For some reason the bolts on the inside of the boat were caulked. Any reason to redo that?
Any input or thoughts are appreciated.