Butyl it is and never look back. Had similar issues of leakage and redid all chain plates with butyl and nary a drop since then. Biggest issue is the movement of the chain plate through the deck. When you apply the sealant everything is at rest. When the shrouds are torqued to spec, there is a significant upward movement of the chain plate vis a vis the deck. Add to that the movement and cycling caused by tacking, and the upward movement gets to be significant to the point that sealants just will not adhere to the stainless bar. The exception is butyl but it must be contained by the deck plate around the stainless bar.
My 2 cents American John and Maryann Legacy III 1982 C&C 34 Noank, CT From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Ed Dooley via CnC-List Sent: Tuesday, April 10, 2018 12:11 PM To: cnc-list@cnc-list.com Cc: Ed Dooley Subject: Re: Stus-List Sealant for chainplates. What about Polyethers? Flexible, adheres to plastics (3M 4000UV does anyway). Here’s what West Marine says about them: Polyether: One of the most exposure resistant sealants, unaffected by teak oils or cleaners, permanently flexible, and sandable. West Marine Multi-Caulk is an excellent choice for wood, metal, or fiberglass but will attack some plastics. However, 3M 4000UV <https://www.westmarine.com/buy/3m--4000-uv-polyether-adhesive-sealant-white-10-oz-cartridge--3760196> is rated as being safe for all plastics. Ed From: "Dennis C." <capt...@gmail.com> Subject: Re: Stus-List Sealant for chainplates. Date: April 10, 2018 at 10:54:56 AM EDT To: CnClist <cnc-list@cnc-list.com> In my opinion, the issue with many sealants is they "cure" or set. So a polyurethane or silicone sets and becomes less flexible. Further, many of those sealants do not adhere tenaciously to metal. Butyl tape, on the other hand, remains sticky and pliable for a long, long time. That means it will flex with any movement in the hardware without breaking the seal. I still use LifeSeal for many applications where there is little potential for movement. But I'm switching to Butyl tape for bedding anything that may flex. Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, Apr 10, 2018 at 9:31 AM, Nauset Beach via CnC-List <cnc-list@cnc-list.com> wrote: I have to do the same thing, again. Used Lifecaulk in August, 2015 and noticed last month one chainplate was damp, and the boat is still under its winter cover. The Maine Sail tape seems to be the favorite bedding material of the list. What is the “life expectancy” of a chainplate seal using this material in the wild? For bedding hardware he shows examples of 29 years, but the rigging / chainplate / deck interface does move [plus temperature variations from summer to winter plus differing expansion properties] so would guess it would take more frequent maintenance. Thanks, Brian From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Dennis C. via CnC-List Sent: Tuesday, April 10, 2018 9:02 AM To: CnClist <cnc-list@cnc-list.com> Cc: Dennis C. <capt...@gmail.com> Subject: Re: Stus-List Sealant for chainplates. I just re-bedded Touche's chain plates with Bed-It butyl tape. http://www.pbase.com/mainecruising/butyl_tape Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, Apr 10, 2018 at 7:18 AM, Glen Eddie via CnC-List <cnc-list@cnc-list.com> wrote: Can someone with a 35 mkI or II let me know the sealant used at the deck when rebedding a chainplate. 4000? Your assistance is much appreciated. _____ Glen Eddie Tel: 416-777-5357 Fax: 1-888-812-2557 ged...@torkinmanes.com VCard <http://www.torkinmanes.com/vcard.aspx?ID=glen-eddie> Torkin Manes LLP Barristers & Solicitors 151 Yonge Street, Suite 1500 Toronto ON M5C 2W7 <http://www.torkinmanes.com/> torkinmanes.com An international member of Ally Law This email message, and any attachments, is intended only for the named recipient(s) above and may contain content that is privileged, confidential and/or exempt from disclosure under applicable law. If you have received this message in error, please notify the sender and delete this email message. Thank you. _______________________________________________ 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 _______________________________________________ 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 From: Schiller <schil...@bloomingdalecom.net> Subject: Re: Stus-List Sealant for chainplates. Date: April 10, 2018 at 11:42:54 AM EDT To: cnc-list@cnc-list.com I wish I would have discovered butyl years ago. I traditionally used life caulk and redid it when it looked like it needed. My advice to C&C35-1 owners is to remove the teak cover off the cabin side of the upper shroud chain plate to look for leakage. Neil Schiller 1983 C&C 35-3, #28 “Grace” Whitehall, Michigan WLYC Sent from my iPhone On Apr 10, 2018, at 7:54 AM, Dennis C. via CnC-List <cnc-list@cnc-list.com> wrote: In my opinion, the issue with many sealants is they "cure" or set. So a polyurethane or silicone sets and becomes less flexible. Further, many of those sealants do not adhere tenaciously to metal. Butyl tape, on the other hand, remains sticky and pliable for a long, long time. That means it will flex with any movement in the hardware without breaking the seal. I still use LifeSeal for many applications where there is little potential for movement. But I'm switching to Butyl tape for bedding anything that may flex. Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, Apr 10, 2018 at 9:31 AM, Nauset Beach via CnC-List <cnc-list@cnc-list.com> wrote: I have to do the same thing, again. Used Lifecaulk in August, 2015 and noticed last month one chainplate was damp, and the boat is still under its winter cover. The Maine Sail tape seems to be the favorite bedding material of the list. What is the “life expectancy” of a chainplate seal using this material in the wild? For bedding hardware he shows examples of 29 years, but the rigging / chainplate / deck interface does move [plus temperature variations from summer to winter plus differing expansion properties] so would guess it would take more frequent maintenance. Thanks, Brian From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Dennis C. via CnC-List Sent: Tuesday, April 10, 2018 9:02 AM To: CnClist <cnc-list@cnc-list.com> Cc: Dennis C. <capt...@gmail.com> Subject: Re: Stus-List Sealant for chainplates. I just re-bedded Touche's chain plates with Bed-It butyl tape. http://www.pbase.com/mainecruising/butyl_tape Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, Apr 10, 2018 at 7:18 AM, Glen Eddie via CnC-List <cnc-list@cnc-list.com> wrote: Can someone with a 35 mkI or II let me know the sealant used at the deck when rebedding a chainplate. 4000? Your assistance is much appreciated. _____ Glen Eddie Tel: 416-777-5357 Fax: 1-888-812-2557 ged...@torkinmanes.com VCard <http://www.torkinmanes.com/vcard.aspx?ID=glen-eddie> Torkin Manes LLP Barristers & Solicitors 151 Yonge Street, Suite 1500 Toronto ON M5C 2W7 <http://www.torkinmanes.com/> torkinmanes.com An international member of Ally Law This email message, and any attachments, is intended only for the named recipient(s) above and may contain content that is privileged, confidential and/or exempt from disclosure under applicable law. If you have received this message in error, please notify the sender and delete this email message. Thank you. _______________________________________________ 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 _______________________________________________ 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 _______________________________________________ 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 _______________________________________________ CnC-List mailing list CnC-List@cnc-list.com http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
_______________________________________________ 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
