Results 1 to 18 of 18

Thread: How would you bed these stanchion bases?

  1. #1
    Join Date
    Jul 2020
    Location
    North Kingstown, Rhode Island, USA
    Posts
    5

    Default How would you bed these stanchion bases?

    Thanks in advance. You guys have always been gracious to questions about my glass-hulled boat.

    My 16 new stanchion bases will sit on teak pads. All of the bases hold the stanchions at a 6-degree angle to the flat bottom of the base. The reason for the teak pads is so that I can make wedges out of some of them to change the orientation of the some stanchions to make the flow of the lifelines fair.

    My thought is to epoxy the teak to the deck, then use a sealant between the stanchion bases and the tops of the pads.

    Any thoughts?


    sp21_58 copy.jpg

  2. #2
    Join Date
    Oct 2009
    Location
    South Puget Sound/summer Eastern carib./winter
    Posts
    19,573

    Default Re: How would you bed these stanchion bases?

    butyl tape
    no epoxy

  3. #3
    Join Date
    Oct 2000
    Location
    Padanaram, MA USA
    Posts
    9,994

    Default Re: How would you bed these stanchion bases?

    Butyl tape is fine.
    What’s the deck made of?

  4. #4
    Join Date
    Apr 2017
    Location
    Kailua, HI
    Posts
    295

    Default Re: How would you bed these stanchion bases?

    Another vote for butyl, under teak and under base.

  5. #5
    Join Date
    Apr 2015
    Location
    St. Helens, Oregon
    Posts
    3,095

    Default Re: How would you bed these stanchion bases?

    X4 on Butyl tape. If you're not familiar with it this may help: https://marinehowto.com/bed-it-tape/

  6. #6
    Join Date
    Feb 2007
    Location
    Port Stephens
    Posts
    24,620

    Default Re: How would you bed these stanchion bases?

    I wouldn't use teak pads for this. They'll probably crack as the stanchion moves - they usually do. I use Tufnol, Auspeton or other phenolic resin material, or I make up pads with layers of glass and resin. As above, butyl mastic or butyl tape.
    Rick

    Lean and nosey like a ferret

  7. #7
    Join Date
    Oct 2009
    Location
    South Puget Sound/summer Eastern carib./winter
    Posts
    19,573

    Default Re: How would you bed these stanchion bases?

    that said, i don't use stantions

  8. #8
    Join Date
    Jul 2020
    Location
    North Kingstown, Rhode Island, USA
    Posts
    5

    Default Re: How would you bed these stanchion bases?

    Quote Originally Posted by Boatsbgood View Post
    Another vote for butyl, under teak and under base.
    Thanks for this, and thanks to all for the guidance.

    I've never bedded anything in butyl, but I understand the reasons for doing so.

    The deck is glass painted with two-part Interlux Perfection.

    I understand that the teak pads might crack under the stresses imposed by forces on the stanchions. I've made all 16 already, however, but I will brainstorm other solutions before final installation.

  9. #9
    Join Date
    Jun 2000
    Location
    Pleasant Valley NS Canada
    Posts
    23,669

    Default Re: How would you bed these stanchion bases?

    If you epoxy the teak pads to the deck and they crack, it will be a bugger to repair/replace. I would treat them as a shim and just bed them to the deck and thru-bolt through them. Much easier to replace.
    Last edited by mmd; 06-09-2021 at 08:49 AM.
    Hope for the best, but plan for the worst.

  10. #10
    Join Date
    Jul 2020
    Location
    North Kingstown, Rhode Island, USA
    Posts
    5

    Default Re: How would you bed these stanchion bases?

    Good call on not epoxying the teak pads to the deck. I'm warming up to the idea of the butyl.

    Does anyone care to estimate how much butyl I'd need for the job? Consider that I'll be bedding the teak pads to the deck, then the stanchion bases to the teak pads--16 times.

  11. #11
    Join Date
    Jun 2000
    Location
    Pleasant Valley NS Canada
    Posts
    23,669

    Default Re: How would you bed these stanchion bases?

    ((teak pad L x W x 16) + (stanchion base L x W x 16)) x 1.15 trimming allowance = total square inches required.
    Hope for the best, but plan for the worst.

  12. #12
    Join Date
    Jan 2011
    Location
    Norwalk CT
    Posts
    1,800

    Default Re: How would you bed these stanchion bases?

    4 tubes of caulk

  13. #13
    Join Date
    Feb 2007
    Location
    Port Stephens
    Posts
    24,620

    Default Re: How would you bed these stanchion bases?

    Quote Originally Posted by ruckle View Post
    Thanks for this, and thanks to all for the guidance.

    I've never bedded anything in butyl, but I understand the reasons for doing so.

    The deck is glass painted with two-part Interlux Perfection.

    I understand that the teak pads might crack under the stresses imposed by forces on the stanchions. I've made all 16 already, however, but I will brainstorm other solutions before final installation.
    Stanchions are under a lot of stress at times. Problems arise when there's water on the deck and the stanchion is pushed to open up a seam between the pad or stanchion. If your deck is solid glass, then it's not going to be an issue. But if your deck has a foam core or is ply, timber etc., then pooling water (rain, dew) around the stanchion base can cause serious issues. On a ply or cored deck, I'd glue glass or similar pads to the deck so that the pad is always waterproof and the only seam that can open up is higher than the deck. Butyl between the pad and stanchion. But if your deck is solid glass, I'd go with your plan as I wouldn't glue teak pads down. Teak with butyl above and below will still crack one day but easy to replace.
    Rick

    Lean and nosey like a ferret

  14. #14
    Join Date
    Jan 2011
    Location
    Norwalk CT
    Posts
    1,800

    Default Re: How would you bed these stanchion bases?

    Good points here. If the deck is cored I would overdrill all the holes and fill with chopped glass and resin. Paint some unthickened resin on the exposed core first and let it soak in.
    Then drill the holes for the bolts.

  15. #15
    Join Date
    Oct 2009
    Location
    South Puget Sound/summer Eastern carib./winter
    Posts
    19,573

    Default Re: How would you bed these stanchion bases?

    Can I grab them while climbing aboard from my dingy?

  16. #16
    Join Date
    Jan 2011
    Location
    Norwalk CT
    Posts
    1,800

    Default Re: How would you bed these stanchion bases?

    You can on my boat because the laminated backing plates installed below are much wider than the bases and the bolts have big-ass fender washers on them.

    The curse of stanchions, lifelines and landlubbers....

  17. #17
    Join Date
    Jun 2000
    Location
    Pleasant Valley NS Canada
    Posts
    23,669

    Default Re: How would you bed these stanchion bases?

    Proper way to prepare cored deck for through-bolted fittings:

    https://www.boatus.com/expert-advice...-deck-fittings

    Hope for the best, but plan for the worst.

  18. #18
    Join Date
    Nov 2010
    Location
    Wellington, NZ
    Posts
    865

    Default Re: How would you bed these stanchion bases?

    Thanks for the picture MMD, saved a thousand words.
    The core will compress and crack the fibreglass on both sides if you don't do this.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •