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Old 12-06-2017, 03:21 PM   #8
Brooksie
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City: Cape Cod, MA
Vessel Name: Island Seeker
Vessel Model: Willard 36 Sedan
Join Date: Oct 2007
Posts: 1,306
Ask the people at BoatLife... I swear by their LifeSeal (not LifeCaulk) but would not use it b/c it won't hold paint. That said, they have been very helpful to me over the years.
The cotton is a huge job, I've done it on a 22' new boat. It seems like something from the dark ages but it is still used normally in new construction. If your seams are wide from drying, you need an expert too know how hard to roll/drive the cotton in and if they are too wide it will just go through. Normally seams are always primed b/4 the cotton goes in but the seam compound bond is then no stronger than the primer itself
Then the question comes what to put over the cotton. Conventional seam compound is too hard for a totally dried out boat and will not allow it to swell properly. Then if you put 52/4200 over it instead why not just use that.
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