HI Fred, I think the VHB thickness used most frequently is 0.090". I believe that thickness to be sufficient to allow movement of the acrylic without cracking.
Gary S/V Kaylarah '90 C&C+ East Greenwich, RI, USA ~~~~~~~_/)~~~~~~ On Tue, Mar 28, 2017 at 8:03 PM, Fred Hazzard via CnC-List < cnc-list@cnc-list.com> wrote: > An earlier lister talked about a port on his 37 cracking because of flex. > I too had that problem after a somewhat rough trip up the coast. My > question is "would a thicker VBR tape allow greater flexing and prevent the > port breaking." I believe 1/16" tape has be been recommended. Would 1/8" > tape help? > > Fred Hazzard > S/V Fury > C&C 44 > Portland, Or > > On Tue, Mar 28, 2017 at 3:42 PM, Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > >> I think Frank was just referring to the fact that silicone calk and tape >> of any type are only short sighted solutions and may even make the final >> repair more difficult. Silicone makes everything it touches nearly >> impervious to any other adhesive or sealer in the future, and most tapes >> will break down after a short period of time resulting in a messy residue >> which will necessitate the used of a goo remover which may, like silicone, >> make future adhesives ineffective. >> >> "Unless you are sailing in the rain I suggest a tarp while in the slip." >> >> The "right" way is generally accepted to be 3M VHB tape followed by Dow >> 795 to seal the edges. Mechanical fasteners would seemingly improve the >> longevity of the seal but destroy the look and would likely prove to have >> unforseen disadvantages. >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> Solomons, MD >> >> >> On Mar 28, 2017 4:43 PM, "Matthew L. Wolford via CnC-List" < >> cnc-list@cnc-list.com> wrote: >> >> Okay, I’ll bite: what does it mean to “do the job right”? >> Caulk/adhesive, mechanical fasteners, or both? >> >> *From:* Franklin Schenk via CnC-List <cnc-list@cnc-list.com> >> *Sent:* Tuesday, March 28, 2017 4:36 PM >> *To:* cnc-list@cnc-list.com >> *Cc:* Franklin Schenk <fdsch...@flash.net> >> *Subject:* Re: Stus-List Sealing fixed portlights / windows, 1994 C&C >> 37/40+ >> >> Bruce, >> >> Yes, it is mostly wishful thinking as some of us learned the hard way. >> Unless you are sailing in the rain I suggest a tarp while in the slip. >> Later you can do the job right and not have to remove any calk or tape. >> >> Frank >> >> >> On Tuesday, March 28, 2017 2:20 PM, Gary Russell via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >> >> I'm guessing it's wishful thinking. The windows "work" significantly >> when the boat flexes and I doubt the sealant will work for long. My >> previous owner tried to smear silicon on the leaks without success. That >> being said, DOW 795 is much better than the typical silicone and may work >> better than what the PO used. >> >> Gary >> S/V Kaylarah >> '90 C&C 37+ >> East Greenwich, RI, USA >> >> ~~~~~~~_/)~~~~~~ >> >> >> On Tue, Mar 28, 2017 at 12:04 PM, Bruce Whitmore via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >> Hello again everyone, >> >> Our C&C 37/40+ has a minor leak or two through the fixed portlights >> windows. I have read up on the removal & re-installation process, and many >> seem to be recommending the VHB tape and Dow 795 sealer approach (or >> similar). >> >> I would like to seal the fixed portlights in place without replacing them >> for now. While they are showing some crazing, and I intend to eventually >> replace them (say in 18 months or so), in the short term I simply want to >> stop all leaks so that we can prevent any further staining of the teak. >> >> Does anyone have a recommendation as far as doing this? Should I simply >> attempt to carefully mask the fiberglass & plexiglass on the exterior and >> apply a bead of Dow 795? >> >> Would it be better to apply a thin layer on the inside? >> >> Or, am I guilty of wishful thinking? >> >> Thanks! >> >> Bruce Whitmore >> >> (847) 404-5092 (mobile) >> bwhitm...@sbcglobal.net >> >> ______________________________ _________________ >> >> This list is supported by the generous donations of our members. If you >> wish to make a contribution to offset our costs, please go to: >> https://www.paypal.me/ >> stumurray <https://www.paypal.me/stumurray> >> >> All Contributions are greatly appreciated! >> >> >> _______________________________________________ >> >> This list is supported by the generous donations of our members. If you >> wish to make a contribution to offset our costs, please go to: >> https://www.paypal.me/stumurray >> >> All Contributions are greatly appreciated! >> >> >> ------------------------------ >> _______________________________________________ >> >> This list is supported by the generous donations of our members. If you >> wish to make a contribution to offset our costs, please go to: >> https://www.paypal.me/stumurray >> >> All Contributions are greatly appreciated! >> >> >> _______________________________________________ >> >> This list is supported by the generous donations of our members. If you >> wish to make a contribution to offset our costs, please go to: >> https://www.paypal.me/stumurray >> >> All Contributions are greatly appreciated! >> >> >> >> _______________________________________________ >> >> This list is supported by the generous donations of our members. If you >> wish to make a contribution to offset our costs, please go to: >> https://www.paypal.me/stumurray >> >> All Contributions are greatly appreciated! >> >> > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > >
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!