building a bulkhead - SailNet Community
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post #1 of 19 Old 11-04-2009 Thread Starter
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building a bulkhead

ive been doing some reading about installing a new bulkhead and noticed people using a foam to separate the wood from the hull (to eliminate hard spots on the fiberglass) but what i cant figure out is what type of foam is this they are using?? any help would be greatly appreciated
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post #2 of 19 Old 11-04-2009
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Usually a structural foam like airex or maybe klegecell - not your standard home depot blue styro!

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post #3 of 19 Old 11-04-2009
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Many builders use rubber gasket material--I'm sure you could find a suitable replacement material at a big box store.
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post #4 of 19 Old 11-04-2009 Thread Starter
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Originally Posted by Faster View Post
Usually a structural foam like airex or maybe klegecell - not your standard home depot blue styro!
awesome thanks! (funny because i just had someone tell me it was blue stryo from homedepot haha i didnt think that could be right... )
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post #5 of 19 Old 11-04-2009 Thread Starter
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hey quick question, you said airex, which from what i can see is actually a softer foam (like exercise mats) did you mean airlite?

(nevermind i just found a rigid airex foam)

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post #6 of 19 Old 11-04-2009
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You can use any kind of foam you like. Tim Lackey at The Triton Daysailor | From a Bare Hull:* Bulkheads
uses blue foam like you purchase at Home Depot. The reason for the foam is to keep the edge of the bulkhead away from the hull until you glass it in. That way the load is all on the glassed in tabbing and not against the bulkhead at any point. You could glass one side and then remove the foam (not that you're likely to though) before glassing the other side. It's purely a softer than wood spacer. I've used ethafoam just because I had some around but anything works as well. The link above takes you to a page documenting a bulkhead installation complete with pictures.
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post #7 of 19 Old 11-05-2009 Thread Starter
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oh ok. and thats actually tha article i was reading earlier too! thanks for the information.
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post #8 of 19 Old 12-19-2010
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Both the Klegecell and Airex Rigid foams look stiff. The foam in the Triton Project appears flex able "contouring to the hulls form". Could it be the exercise mat used as the spacer?

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post #9 of 19 Old 12-19-2010
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Where did you find the airex material? How stiff/flexible is it?

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post #10 of 19 Old 12-19-2010
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Just cyber shopping the Airex and Klegecell. I don't have any experience with ether product. Would like to here some feedback from someone who has accutly used it for a spacer in the bulkhead tabbing. We're currently using half inch Divincycell foam. It's works fine other than it needs to be cut and scored into hundreds of little squares in order to achieve the hull shape. Is there a quicker or easier product or way. Thanx.

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