If you choose to do a "deck peel", a vibrating saw such as a Dremel Multimax is the tool to use. It will cut a very narrow groove. You can then "peel" up the deck using a flexible putty knife. If you are careful, you can then replace the peeled piece of deck.
Go a bit outside the rotted area. That way, once you remove the rotted wood, you will have a ledge on which the peeled piece of deck can be replaced. The elevation will then match. I've done a few deck peels, feel free to ask questions. Dennis C. Touche' 35 -1 #83 Mandeville, LA On Thu, Jun 14, 2018 at 2:54 PM, Rick Taillieu via CnC-List < cnc-list@cnc-list.com> wrote: > Stephen, > > > > I had the same thing on my Mk1, brown water squishing out when I tensioned > the rig in the spring. > > There is a plywood rectangle glassed into the deck that supports the mast > step and transfers the load from the mast step casting through the deck, to > the bulkhead cross member in the cabin. > > The plywood is rotting and needs to be replaced. > > I sounded out the deck around the step area to see if there was any > delamination (there was), then cut off the top layer of the deck to the > edge of the delamination and peeled it off. > > If your very lucky it will come off in one piece or a few large pieces. > > Once this is done you will see the plywood support and any rotten core in > the area and you can remove all of the nastyness. > > You can replace the plywood piece (encapsulate it in epoxy first) or just > fill it all in with some fibreglass mat so it is solid. > > If you were lucky you can glass the outer deck layer back on or just glass > over the entire cut area until it is even with the existing deck. > > Drill the step mounting holes from the inside to get the proper location > then do the oversize drill to the bottom layer of the deck, epoxy fill, > re-drill routine to ensure it doesn’t rot again. > > Make sure you bevel the top of the holes to get a better seal with > whatever you use to seal the holes before putting on the step casting. > > Some fairing and paint and it’s as good as new. > > It took me 3 or 4 days (3 or 4 hrs/day) to do the repair with simple > tools, a dremel tool with cut-off wheels, oscillating multi tool saw, putty > knife, chisel, hammer, drill and bits. > > You’ll also need epoxy, some sort of thickener (I used colloidal silica), > fibreglass mat (woven, not the chopped stuff), mixing containers, stirring > sticks and the normal ppe. > > It is a DIY job and the only precision areas are getting the deck > thickness the same as it was with a flat area to mount the step and making > sure the holes to bolt down the step are re-drilled in the original place. > > > > Rick Taillieu > > Boatless > > Leamington, Ontario > > > > > > > > > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Stephen > Kidd via CnC-List > *Sent:* June-14-18 10:16 > *To:* cnc-list@cnc-list.com > *Cc:* Stephen Kidd > *Subject:* Stus-List C&C 25 II - mast step concerns > > > > Hi all, > > > > First, having found the archives for this list incredibly helpful, I > wanted to pose a question about the mast step on my C&C 25 II (bought about > a year ago somewhat impulsively, I confess). Occasionally, after prolonged > rains, I'll find some water residue in the cabin under the mast step. It's > dark brown, which has me concerned, and is dripping from one of the bolt > holes. Not much, just some drops. I put some butyl around the step, which > has seemed to solve the leak. > > > > The deck feels solid, but I'm wondering if this warrants a mast step > rebuild. A failing mast step sounds scary. Any things I should check to > diagnose? Any ideas on what a boatyard might charge to rebuild the mast > step (rate is about $100 an hour)? > > > > > > > > > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > > Virus-free. www.avg.com > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > >
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