Skip, If it is the core, I think it is usually done from above, preferably cutting along the edge of the non-skid and lifting out the glass. Others who have actually done it will correct me if I am wrong.
I hope Rob is right that it is not the core! Joel On Thu, Jan 15, 2015 at 10:22 AM, Robert Mazza via CnC-List < [email protected]> wrote: > Skip, > > A few of observations: > > 1. It is unlikely that the brown film under your deck is core related. In > my own C&C Corvette that film was emanating from the micro-balloon based > fairing compound that was used to fair the underside of the deck, since, > like your boat, the Corvette does not have a head liner. It was a dusty and > dirty job to grind all that old fairing compound off and refair the > underside of the deck with West Epoxy fairing compound, but since then it > has been trouble free. > 2. There is an excellent two part article on deck core repair and > replacement in the last two issues of Good Old Boat magazine. Well worth > reading, as is the whole magazine. I can say that because I'm a > Contributing Editor, although I subscribed to the magazine well before > that. > 3. Hire a good surveyor (preferably SAMS or NAMS accredited) to tap and > run a moisture meter over the deck to really determine the extent of the > problem. > 4. If core needs to be replaced, it should be replaced with new core, not > solid glass, New balsa can be used, as long as all openings and fasteners > are isolated from the core and all the kerfs in the core are filled with > resin. That applies to foam cores as well. If foam it should be a minimum > of 5 Lb. density. > > Rob > > On Thu, Jan 15, 2015 at 9:25 AM, Burt Stratton via CnC-List < > [email protected]> wrote: > >> I have resigned myself to the fact that I need to address my decks and >> cockpit sole. The PO installed wood strips fore to aft on the cockpit sole >> ostensibly to provide some lateral traction. They were not properly bedded >> and as you might imagine, the wood strips did not last long. There are open >> screw holes and if I step next to them water comes out. That is an obvious >> problem. >> >> >> >> The reason I am concerned about my decks, particularly my cabin roof is >> the fact that a brown wet film will form over time on the inside of the >> cabin roof. My roof has no headliner. The paint was peeling badly when I >> bought the boat and I have stripped it off. If I clean the fiberglass and >> wait a few days the film gradually appears. My assumption is that there may >> be a wet core in the roof. I will get a surveyor to take readings with his >> moisture tool to confirm but assuming that is the case, I would appreciate >> any insight by listers who have tackled this problem. >> >> >> >> I am not an experienced fiberglass guy. I don’t particularly like working >> with fiberglass but I am pretty handy otherwise and would be willing to >> attempt this work in order to save a few hard earned bucks. >> >> >> >> Here are a couple specific questions: >> >> 1. What would the balsa typically be replaced with? An appropriate >> thickness of mat? >> >> 2. Should I attempt to save the fiberglass skin I remove to be >> re-used or just use new fabric to glass over the repair? >> >> 3. Assuming I work from the inside, how do I defy gravity to keep >> the new mat or fabric from falling down until it cures? Does the resin have >> enough mastic properties to keep it up? >> >> >> >> It is starting to look like the coming season may be lost for me. I have >> a lot to do and can’t do most of it until the temps increase. I do want to >> rehabilitate this boat and do it right. I think it will be worth it whether >> I keep the boat or sell her when I’m done. The boat is covered so I am >> hoping it will dry out a bit before I start. >> >> >> >> Thanks as always >> >> >> >> Skip >> >> 1974 CNC 33 3/4tonner >> >> On the hard in Walpole, MA >> >> _______________________________________________ >> This List is provided by the C&C Photo Album. >> >> Please donate to the C&C Photo Album to keep this list free for all >> subscribers. >> >> Email address: >> [email protected] >> To change your list preferences, including unsubscribing -- go bottom of >> page at: >> http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com >> >> >> > > _______________________________________________ > This List is provided by the C&C Photo Album. > > Please donate to the C&C Photo Album to keep this list free for all > subscribers. > > Email address: > [email protected] > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > -- Joel 301 541 8551
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