Useful article on “Marine How To” site advocating Butyl tape. Especially useful technique of using a cone bevel to increase available sealant directly under fastener. Thanks for all input. Improper sealing obviously can lead to core rot, a mess, if not a boat killer , if neglected. Sent from my iPhone
On Jun 13, 2021, at 11:31 PM, John Schinnerer via montgomery_boats <montgomery_boats@mailman.xmission.com> wrote:
I second, or third, or wherever we're at, the butyl tape.
The 3M products are also known as "Satan's glue" - for good reason. They have their uses, but for bedding most of what's above waterline on an M17 or M15 or most other boats I've messed with I'd use butyl tape.
I've re-bedded pretty much everything on my M17 with it in the last few years, and used it for all added hardware. Some of my boat's original hardware had no original bedding, which I found interesting. And some had been (re-)done by some previous owner with silicone, oh what a PITA to undo!
The butyl tape will in some applications continue to squeeze out excess over time, which is probably what the other post is referring to. I have had a bit of that. It's easy to just trim off, if you tighten or re-tighten something and notice that squeezing out, which will attract dust & grit if you leave it there.
Also if you have bedded stuff with butyl in the spring, or the previous fall, and then your boat is out in sun and hot weather in the summer, the additional expansion from additional heat of some parts & pieces may squeeze out a bit more butyl than in the days after you originally installed it. I have had some of that too, I just trim or scrape away the extra butyl.
cheers, John
On 6/13/21 3:31 PM, Charlie Fortner wrote: Hello Wrinkleboat lovers! What's you're favorite material for re-bedding deck hardware? I've used some sort of caulk-like stuff -- can't remember what -- in the past. It was goo in a tube. I've seen butyl tape recommended, but never used it. Do you have experience with butyl tape? Does it hold up? Are there other bedding materials I should look at? It'd be great if I could re-bed and then immediately go sail. Thanks, Charlie
-- John Schinnerer - M.A., Whole Systems Design -------------------------------------------- - Eco-Living - Whole Systems Design Services People - Place - Learning - Integration john@eco-living.net - 510.982.1334 http://eco-living.net http://sociocracyconsulting.com