I also did the hull to deck joint on my M15. I ground out a few cm gap along the length of the joint, and covered with masking tape. I then used a syringe filled with thickened epoxy to inject into one end, and let it flow out an air hole on the opposite end. This worked great and seems to have sealed up the seam... but I'm still getting some leaking in heavy seas. I think I need to remove the teak rail and reseal the bolt holes as well. Sincerely, Tyler '81 M15 #157 S/V Defiant ----- Original Message ----- From: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Cc: eblohm@rocketmail.com, "Robbin Roddewig" <robbin.roddewig@verizon.net> Sent: Tuesday, June 28, 2022 8:37:34 AM Subject: M_Boats: Re: Hull deck joint rehab. 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