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Go Back   SailNet Community > On Board > Gear & Maintenance > Engine Room/Compartment Paint
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Thread: Engine Room/Compartment Paint Reply to Thread
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Topic Review (Newest First)
12-05-2007 06:40 PM
GeorgeB Oops! I ment to post my previous response to the guy who owned the C36 with a heat exchanger problem. You should be able to disassemble your bulkheads too for easier access to the area. No matter what you do, you need to clean the area really well as these types of products don’t stick well to greasy surfaces. Make sure the surface being covered has a little “tooth” to it. I have had success with spraying white gelcoat over a masked off area. I use one of those throw-away spray bottles you get at the home stores and thin the gelcoat with a little acetone. On your flat bulkhead surfaces, have you considered using some de-coupling sound insulation? I remember reading somewhere that properly vented engine compartments should have an ambient air temperature no more than 120 degrees F so any barrier coating or gelcoat should work fine.
12-05-2007 06:27 PM
Northeaster going through the exact same thing - engine is out - want to clean and paint underneath it.

Any recommendations on not-too-toxic cleaners, that would remove 30 years of grease and grime, and not damage the fiberglass, before I sand lightly and paint?
The engine area runs under a fake floor, to the main bildge, which is a greasy mess as well.
I was thinking of an orange / citris based cleaner, as the orange hand cleaners remove bike grease, etc quite well. Possible a spay bottle type, from an industrial supplier??
Other suggestions??
12-05-2007 04:11 PM
Rockter I had good success with a two-part epoxy.
12-04-2007 03:50 PM
sailboy21 Anyone ever try this stuff?
12-04-2007 03:44 PM
ilnadi George, as much as I would like, I don't have C34, I have a C25. The engine compartment is the part under the cockpit they stole from what is a double q-berth on the outboard models.

I need to touch up the bilge and all connected parts, 20 years of grime dont scrub away too easy. I may do the whole thing with barrier paint in one pass. I think I'll resign myself to just cleaning the bulkheads.
12-04-2007 02:36 PM
GeorgeB The rear engine compartment “box” completely unscrews from the boat giving you good access to engine on the MkII boats (I have a C34 with the same engine). MkI boats should have a similar set up as Catalina designs all their wooden bulkheads to be removable. I took the opportunity to install sound dampening insulation back there when I had mine out. Catalina paints a barrier coat in all bilge areas so you shouldn’t have to, unless you want to “freshen it up” or do a little redecorating.
12-04-2007 02:34 PM
AjariBonten Whatever you do, do NOT use some left over bottom paint just 'cause you gots it hangin' 'round ....

No, I DID NOT DO THAT; but one of my crew did it on his boat, LOLOLOLOLOLOL

What a freakin' MESS
12-04-2007 02:30 PM
ilnadi
Quote:
Originally Posted by ilnadi View Post
...I'll post it to Interlux and see what they say.
Not much help there:
"In the bilge area we would recommend using Bilgekote, but we have not tested Bilgekote, or any of our other topside paints to with stand an environment where they are subjected to high heat. There is a risk that in those situations the paint will blister and peel off."
Doesn't sound like they're ready to sign up to not cracking under pressure, I mean heat.

As far as sound isolation material, this is a Catalina 25 that does not really have a sealed engine compartment (there are opening panels in three directions and a hole aft, so I'd have to cover a bunch of small areas, removable panels, etc. Not ideal). I am thinking cosmetics and easier to clean next time (plus detect leaks, etc, etc)
12-04-2007 02:19 PM
HoffaLives you might want to look at sound barrier materials rather than paint, at least for the sides and top.
12-04-2007 09:46 AM
ilnadi thanks. It is true that the paint does not have to be more heat-resistant than plywood and MDF but I also did not want it to peel off too quickly. I'll post it to Interlux and see what they say.
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