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Catalina/Capri 25/250 Sailor's Forums

General Sailing Forum

New Bulkhead - questions.

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sodonnell
1st Mate

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76 Posts

Initially Posted - 05/21/2006 : 17:59:37

I've been going back and forth about replacing the bulkhead.

I was finally able to confirm that it is a leak at the chainplate causing the water damage.

There is minimal damage near the chainplate itself but I can see at the bottom of the bulkhead the damage is worse where the water collected before running on to the floor.

So I stopped by Home Depot to see what kind of wood I could choose from.
I believe I need a 3/4 4x8 sheet.

The choices are Oak, Birch or SandePly?

Is any one better that the others for a marine application?

Edited by - on

Happy D
Admiral

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921 Posts

Response Posted - 05/21/2006 : 18:53:05

Scott,
What boat do you have? What year is it. My 77 has 1/2" bulkheads. This is a blessing and a curse. 1/2" material is tough to come by. I bought real teak 1/2" plywood for lots of money and probably should have my head examined for that. If it is 1/2" stock, check with a hardwood dealer. Look at the walnut and the cherry plywood. You could use birch like John V did and stain it to match pretty close. I would think cherry would be the cats meow. But I really like cherry.
[url="http://www.theworkbench.com/plywood.php"]Here[/url] is a list of the wood my local place carries. You'll notice the selection for 1/2" isn't so wide. The mfgrs. don't put good veneer on both sides. I thought about gluing two 1/4" together for give me 1/2" with perfect veneers on both sides. Seems like a lot of work though.
Good Luck,
Dan

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sodonnell
1st Mate

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Response Posted - 05/22/2006 : 11:16:14

Dan,

Thanks for the reply.
I see a lot of people read the post but only 1 reply.

My boat is a 1980 C25 SK.

I have a couple of small drill holes in the bulkhead now for mounting speakers, etc.
I'll double check the thickness.

I think I'm going to go for the Birch.
The sandeply looked good but I never heard of it before.
I guess being that it is plywood, there is much of a difference in the overall strength.

Thanks.

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Ericson33
Admiral

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USA
892 Posts

Response Posted - 05/22/2006 : 11:56:53

If you are going to go thru all of the trouble of replacing the bulkheads, why are you not using a marine plywood. You can get it at most Lumber supplies, No Lowes or Home Depot, but a major lumber supply. If you are worried about how the plywood looks you can always just buy some veneer and DIY. For Bulkheads I would go with the strongest material they have got to fit the space. If you can only replace with 1/2" I would put it back it that way, but if you have the romm move to 5/8 or 3/4

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Happy D
Admiral

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921 Posts

Response Posted - 05/22/2006 : 20:29:23

Scott,
I don't think you'll have good luck with 5/8" or 3/4" plywood. There is a slot that the wood fits into on the port side. I had to shave quite a bit of the 1/2" to get it to fit well. There is also a trim piece on the forward side of the compression post that is made for 1/2" material. Also the vanity sink front and top, as well as the shelf on the stbd. side are all set up for 1/2" material. The wood separator behind the head will also have to be trimmed. 3/4" plywood is also a lot heavier.
As far as marine plywood is concerned, I don't think it is required. After all, if Catalina would have used marine plywood, we wouldn't be replacing the bulkheads.

The veneering idea is a good idea but I've not been able to get very good results when I do large surfaces. I think a vacuum bag would be required to get a professional job veneering a large panel like that, but I'm not an expert carpenter either.

This is also a good time to epoxy seal the deck's core at the opening for the chain plate. If the bulkheads are rotted from leaking chain plates, the core is soaked as well. Let it dry out as long as you can before sealing it up.
Where are you located?
Dan

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Champipple
Master Marine Consultant

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USA
6855 Posts

Response Posted - 05/22/2006 : 20:33:09

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Happy D
 Scott,

As far as marine plywood is concerned, I don't think it is required. After all, if Catalina would have used marine plywood, we wouldn't be replacing the bulkheads.

<hr height="1" noshade id="quote"></blockquote id="quote">

I disagree Dan. An almost 30 year old boat with a leak by the chainplates is going to need bulkhead replacement regardless. If someone is going to take the time to do it, marine grade Teak veneered plywood would be the best bet.

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Ericson33
Admiral

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USA
892 Posts

Response Posted - 05/23/2006 : 02:40:34

If Catalina would have spent the extra 20 bucks for marine plywood you might not even have this topic on the forum, Do it right if you gonna spend the time. The Bulkheads that have been repalced on the Capri are Marine Plywood, And for that matter are painted White. It really does make the inside of the boat lighter.

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Happy D
Admiral

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921 Posts

Response Posted - 05/23/2006 : 06:21:59

<blockquote id="quote">quote:<hr height="1" noshade id="quote"> An almost 30 year old boat with a leak by the chainplates is going to need bulkhead replacement regardless<hr height="1" noshade id="quote"></blockquote id="quote">

Regardless of what? Weather it is marine grade or not?

Where's your boat going to be in 30 years?

Anyone that takes the time to replace the bulkheads isn't about to let the chainplates leak again.

For the record, I used marine grade plywood.

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Champipple
Master Marine Consultant

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USA
6855 Posts

Response Posted - 05/23/2006 : 06:27:47

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Happy D
 <blockquote id="quote">quote:<hr height="1" noshade id="quote"> An almost 30 year old boat with a [bad] leak by the chainplates is going to need bulkhead replacement regardless<hr height="1" noshade id="quote"></blockquote id="quote">

Regardless of what? Weather it is marine grade or not?

<hr height="1" noshade id="quote"></blockquote id="quote">

Yes that was what I meant.

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