I did the hull to deck joint on my former M-23. Jerry had recommended it as the sealant they used in the 70's was not meant to last 40-50 years. New sealant is much more advanced. Used 5200 as I hoped to never have it taken apart again. Was able to reef out the old sealant (I seem to recall the M's are a shoebox flange), pry open section at a time and replace. Also replaced all the screws with aviation grade stainless with square thread heads. These we available at McMaster, West marine or both. It is a lot of work but my joint was having issues so I did it. ThanksRobbinformer M-23,M-17,M-15,M-10 ... -----Original Message----- From: E Blohm via montgomery_boats <montgomery_boats@mailman.xmission.com> To: montgomery_boats@mailman.xmission.com Cc: E Blohm <eblohm@rocketmail.com> Sent: Sun, Jun 26, 2022 11:22 am Subject: M_Boats: Hull deck joint rehab. Lots of progress on my M17 #248 the last couple of days. In addition to bow to stern cleaning outside/inside I took off mast/standing rigging and inspected and all looks good. I had some inspiration last night to use a heavy polish compound to the heavily oxidized hull to see how well it would work and 4 hours later the hull looks incredible. I’ll leave it as is for now with a polish/wax next spring. The boat is going to a local sandblaster expert tonight for a bottom 3-4 layer paint removal. I’ll seal up a couple through hulls then put a bottom barrier on over winter. I would like to reseal the deck joint since it probably is due for it. Any recommendations as far as that project is concerned? Thanks Erik Sent from my iPhone