SEALING INTERIOR OF HULL

[Daniel1947]

I am just about ready to start laying in the lumber. The transom, stringers and bulkheads are cut and everything has been trial fitted and is just about ready for resin and cloth. I am having very strong thoughts of laying in 1 layer of 1.5 ounce CSM on the complete interior of the hull, port to starboard, bow to stern, prior to installing the wood. I know that GT1000000 did it with the Bassassin, but I think he used 1708. (I searched but couldn't locate his post about it.) I am not worried too much about the additional cost, but would like to be relatively sure that the hull is completely sealed prior to stringers, etc. Any thoughts?

 

[Rickmerrill]

Daniel, just my thoughts. I don't really see the point, it's just adding needless work. CSM isn't going to add much strength or thickness. Once it's been on for 19 hours or so you're going to have to rough and scuff before bonding anything to it, adding more work. You already ground a nice surface to bond to and hopefully the hull is already waterproof. If you had to add some strength or build up bulk then 1708 would be much better to do that. Won't hurt and it is your boat.