Sorry - a little hasty and the dreaded double post. If the entire bottom is rotten along a 2-3' length I would cut it out. First though, make sure by prodding it hard with a screwdriver along its length. Wash with bleach so you can see past the mildew..
I would be very surprised if the rot was not a result of standing water > collecting at the bottom. Even condensation dripping down if it is humid > as you say. Any rot I've found in various boats started at the end grain, > and typically low down where water collects. The holes cut for wires are a > typical trouble spot as there is plenty of end grain which has not been > glassed or finished conscientiously. After you identify the rotted areas, > cut out the rot at described below, or if its a bigger area, buy or borrow > a Fein oscillating tool with a bimetal blade. This is a gift for boat > surgeons. As below, ensure the repair is saturated with epoxy. > > My thought would be to cut above the area of rot it with a hole saw, then > cut vertically down to the bottom, making a mouse hole. Size everything to > remove the rot. Make the mouse hole big enough to work/sand inside. Wash > the whole area with bleach to kill any spores. (Careful around diesel) > Rough radius the sharp corners, sand the bottom flat and coat the whole > thing in epoxy. Paint it white so you can see problems/mole later. If > you need to close the hole, make a cover that laps the sides, much easier > than fitting a 'dutchman'. (Unless you enjoy that sort of thing as I do). > I'd be tempted to leave the mouse hole open to allow it to drain and let > the air move. My 33ii has several areas that would (and will) benefit from > greater air movement. > > Dave. > > > > > > From: Patrick Davin <jda...@gmail.com> > To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> > Subject: Stus-List Rot in non-structural bulkhead - thoughts? > Message-ID: > <CAHixY6Tv=u3TMDg20oPVe=jk6zzbuett2kqqafhzdkcsq1y...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > So I'm doing a lot of projects lately, and was majorly bummed out to find > the wall between the engine compartment and the lower foot of the port aft > quarterberth has some significant rot. Frustrated because lately it feels > like every project I fix, I find a new one. And this will be a big one. > > Please see pictures here: > > https://drive.google.com/folderview?id=0BxfHpwssU_6NNVBhbXpEZnhkUE0&usp=sharing > > As they say, pictures are worth a thousand words. It's a 2-3 foot section > of the port engine compartment wall, abutting the storage compartments > under the port quarterberth. > > One thing I'm perplexed on is - how did this happen? There are no leaks > dripping onto this area as far as I can tell. The cockpit is above this and > it doesn't have any major penetrations on this side. And the top of the > bulkhead is solid. Normally when wood rots I expect it to start from the > top, where the leak is. > > > >
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