Wood strip canoe repairs - Router Forums
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post #1 of 22 (permalink) Old 07-09-2012, 12:35 PM Thread Starter
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Default Wood strip canoe repairs

I picked up this cedar strip canoe last week, my girlfriend and I have talked about getting a canoe for ages. Went out for its first trip last Saturday, it paddles great, with a very small leak at the back. I'm planning on replacing the keel - the rest of it seems in good enough shape, but the exterior keel has lost its varnish, and started to dry rot and is looking pretty junky. I think the leak is coming from one of it's anchoring bolts. I'm considering treating it down with "git rot" epoxy to firm up the keel until I can properly tackle the job (transporting a 15' long strip of wood to my cottage is going to be fun), and giving the whole thing a mild sanding and revarnish. Reading up on canoe repair on the internet make it seem like a bit of a arcane art, but I'm just hoping to tune it up a bit and keep it afloat for a while to come.

Was wondering if anyone had any advice or thoughts, cheers!

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post #2 of 22 (permalink) Old 07-09-2012, 02:50 PM
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"I'm considering treating it down with "git rot" epoxy to firm up the keel ..."
If epoxy can't fix it, it ain't worth fixin' !
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post #3 of 22 (permalink) Old 07-09-2012, 05:15 PM
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post #4 of 22 (permalink) Old 07-09-2012, 05:29 PM
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Keep us up to date on the repairs, Rob.

Canoeing always seem to me to be a civilised way to get on the water...

James
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post #5 of 22 (permalink) Old 07-10-2012, 05:57 AM
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I like West System epoxy and it solved many wood rot problems for me. Just offering another choice.

Once on the river trip here in Michigan I had to fix a keel leak with Crisco. It worked great till I could get home.
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post #6 of 22 (permalink) Old 07-10-2012, 06:48 AM
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You never mentioned fiberglass. All of the cedar strip boats/canoes I've seen, or read about, were all covered with fiberglass and epoxy. That one wasn't? If it was me, I'd probably just put the GitRot to it, then fiberglass and epoxy.

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post #7 of 22 (permalink) Old 07-10-2012, 08:39 AM Thread Starter
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Quote:
Originally Posted by JOAT View Post
You never mentioned fiberglass. All of the cedar strip boats/canoes I've seen, or read about, were all covered with fiberglass and epoxy. That one wasn't? If it was me, I'd probably just put the GitRot to it, then fiberglass and epoxy.
It's covered in fiberglass, but then the keel strip sits on top of this, which apparently is common for them, and a somewhat controversial part of wooden canoe anatomy - I think after seeing this, I'm in the "no keel" side, but it's what I've got, so I'm going to have to run with it.

I've considered running a strip of fiberglass down the center of the keel after I GitRot it, putting a coat of epoxy on that, then varnishing the heck out of it.

At some point I'll have to bring up a 14' board of ash and a tablesaw (or circular saw and a guide), so I can rip off a new keel, but I have a feeling it will be larger canoe surgery when I take the keel off.
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post #8 of 22 (permalink) Old 07-10-2012, 03:58 PM
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Quote:
Originally Posted by MAFoElffen View Post
Thanks very much for posting that very nice link, I can see that the constructor of both the Canoe as well as, the Page on how he did it, that he went as far as he could to show very nice details, myself, I would like to make one. NGM
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post #9 of 22 (permalink) Old 07-11-2012, 09:24 AM
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Keep us posted on what you come up with for repairs. Canoes are great except for waterskiing.

John T.
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post #10 of 22 (permalink) Old 07-11-2012, 09:45 AM
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Hey Rob; you likely are already aware that there are pitfalls in the compatibility of polyester resins (fibreglass) and most epoxies. Please confirm with your supplier that you have compatible products!
We had a conversation earlier about S1...it for sure is safe to use under polyester.
The other potential problem down the road is 'contaminating the surface with varnish; that'll be a nightmare should you ever need to do a fibreglass repair!
I'm under the impression that acrylic coatings are the preferred protective coating :
FIBERGLASS PROTECTIVE COATING : Rainbow Tech

"Binders

Another component in polymer paints is the binder.

Binders are the chemical compounds that cause the pigment particles to bind to each other. The binder is typically a plastic including resins such as acrylics, polyurethanes, polyesters, melamine resins, epoxy, or oil.

All of the coatings above work well with metal or wood. Only the bold faced types (above) work well on fiberglass.

FRP is different because of it's typical uses of Fiberglass (FRP) and the additional protection specific types of FRP require. Oil, melamine, and acrylics have too many disadvantages to be effecively used on FRP.
How to Paint Fiberglass

"Paints for FRP should not be oil based and melamine is not durable enough, to make a good coating. Acrylics, polyurethanes, polyesters, and epoxy are best. Note that the pigment in epoxy paint protects it from ultraviolet light. In matter of fact the worst thing for epoxy is direct exposure to sunlight without some sort of protective coating."

Being as how the boat's clearcoated, UV protection is the objective of any top coating.
Cheers,
-Dan
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