posted 05-06-2000 09:23 PM ET (US)
Have read many posts about the problem of water soaked foam - never thought it could happen to me, until yesterday. Thirty-six hours later, I think I have a solution - at least for small areas.While adding some additional rollers to the trailer for my 19 Outrage with the boat on the trailer (yes it is possible), I noticed some areas on the keel where the gelcoat had been worn down to the glass. Another thing to fix before getting in the water this spring, I thought. Then I saw a drop of water appear in one of the spots and fall to the ground. My worst nightmare! After denial, depression, search for another explanation, etc I realized I had to find out how serious it was. A 1/4" drill into the spot where the drop was and two more about 1" on either side produced another drop. Probing with a wooden skewer kinda like testing a cake for doneness produced a wet skewer in two of the holes. A little more exploring seemed to indicate the problem was confined to a fairly small area right next to a roller and maybe some voids in the foam as well. Seems like the weight of the boat on the roller may have compressed the foam leading to some voids; that combined with the worn spot on the keel, boat in water, etc, etc...well, on to the solution. And I was NOT about to start carving out chunks of foam.
The exploratory holes did nothing to "drain" the foam; I assume the water is encapsulated in the foam and won't run out by itself, just like a sponge. It needed a push... or a pull. Well its hard to squeeze the hull so I thought about the pull concept and figured a vacuum might provide the "pull" and something primitive would be fairly easy to create using a plastic bag and a shop vac. Duct taped a freezer bag around the 1/4" holes, cut another hole and duct taped the smallest attachment I had for the shop vac, turned it on, and prayed! It works - sucks the water right out. Not a lot of water in my case, but definitely water.
I was fortunate to be dealing with a very small area maybe a few square inches of surface area on the hull by 3-4" deep. I don't see why this wouldn't work for larger areas just as well. I'm not sure how much the shop vac likes this although it didn't seem to overheat. Hopefully no more drops in the morning and I will fill the holes with foam and patch the fiberglass, gelcoat, etc. Anybody else ever try this??