Keel Repair

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8 years 8 months ago #2114 by William Weigel
Replied by William Weigel on topic Keel Repair
Thanks everyone for the great advice. In addition to the gouge from the rock there is a 6" crack down the centerline. This must be the joint. I am hauling on Sept 14 to repair. I will post photos of the project.

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8 years 8 months ago #2135 by William Weigel
Replied by William Weigel on topic Keel Repair
Here are a couple of before and after photos. The repair went very well. There was essentially no moisture once I ground back the damaged fiberglass. The seacrete had filled around the ballast leaving no voids. I used 8 ply of biaxial cloth and epoxy the complete the full repair. It is probably stronger than original since I have sealed the seam along the hull joint.

Thanks for all the prior comments.


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The following user(s) said Thank You: Robert Snelling

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7 years 8 months ago #2416 by Robert Snelling
Replied by Robert Snelling on topic Keel Repair
Unfortunately, I'll be undertaking the same repair this fall (same mechanism of injury....one downfall of sailing the Maritimes). Thanks so much to all for this informative post-thread

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6 years 9 months ago #2602 by Robert Snelling
Replied by Robert Snelling on topic Keel Repair
Well, the repair was completed; however, it proved to be much more than anticipated. There had been previous groundings with not quite sufficient repairs over the past decades, and the multiple layers of glass had delaminated badly. I could almost flip the layers like thumbing through a telephone book. So as we ground out the damage, the original 8"x6" hole was ground-out to about 9 feet stem-to-stern, and up either side of the keel by about 2 feet. A hydraulic jack was put under the lead to ensure it didn't shift with so much glass gone. There was wet sand all around the lead. We put 38 layers (yes thirty-eight layers) of glass, alternating between chopped mat and biaxiale/weave cloth (and lots, and lots of epoxy resin) to make the repair. This fall I am grinding-out the material in the joint forward and aft of this repair, and refilling it with thickened epoxy mixed with strand. That will be followed by putting a layer of 2", then 4" biaxial tape over that (before fairing and finishing epoxy coat)

A much larger job than anticipated, but it is done.

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