Which Sealant to Use for Bedding Stanchion

[dkinzer]

I ordered a stanchion from SBO to replace the one that I damaged. It arrived today and I've been pondering which sealant I should use for bedding it. I've heard some say that you shouldn't use 5200 on anything that you might need or want to take apart in the future so I'm reluctant to use that.

Recommendations?

 

[Crazy Dave Condon]

4200 is one

 

[berner73]

I re-bed all of our stanchions with Bed-It tape per Main Sail's instructions. I'm sure 4200 will also work well, but butyl is very forgiving if you ever need to remove/re-install a deck fitting. Source and instructions linked below.

Butyl Tape

 

[dkinzer]

Thanks. I've used butyl tape on my RVs over the years so I'm very familiar with it. I know that I've heard of 4200 in the past, the difference being that it isn't quite as strong as 5200. The existing bedding material appears to be a urethane type of sealant so I think I'll go with the 4200.

 

[Dean Strong]

Bed-It tape

 

[danooxnard]

Bed-It tape

 

[isaksp00]

Bed-It tape

+1

 

[Tally Ho]

Another vote for Bed-It tape

 

[rgranger]

Bed-It tape

 

[dmax]

Bed-it, you won't regret-it.

 

[Parsons]

The reason that everyone, including me, uses butyl tape (Bed-It being a particularly good brand, but not the only one) is future disassembly and long-term flexibility. While 3M 4100/4200 have good sealing properties, they also have high adhesion, close to the bonding between gelcoat and the underlying fiberglass. 5200 actually has higher adhesion, and you can pull off the gelcoat if you have enough strength.

 

[Scott B]

The reason that everyone, including me, uses butyl tape (BedIt being a particularly good brand, but not the only one) is future disassembly and long-term flexibility. While 3M 4100/4200 have good sealing properties, they also have high adhesion, close to the bonding between gelcoat and the underlying fiberglass. 5200 actually has higher adhesion, and you can pull off the gelcoat if you have enough strength.

Bed-It is not a butyl tape and is a different formulation than regular butyl. It was dveleoped by Rod ( Compass Marine Inc / MarineHowto.com) specifically for the marine environment.

Bed-It Tape is NOT an RV, Masonry, HVAC, or glazing product. It was specifically formulated for use in bedding deck hardware.

 

[Project_Mayhem]

Butyl will flex and stretch more than 4200. Stanchions get pulled on, especially when you have guests on board

Rebedding Deck Hardware With Bed-It Butyl Tape - Marine How To

Put the screw through the stanchion and deck, then use a small impact gun or a second person to fasten the nut below deck. Ideally you want to prevent the screw from turning while your tightening the nut

 

[Crazy Dave Condon]

Never use an impact wrench for this stanchion. If you don’t see the nuts,, then the bolt is screwed into an aluminum plate within the fiberglass deck which the aluminum plate was drilled and tapped for that bolt size

 

[Project_Mayhem]

Never use an impact wrench for this stanchion. If you don’t see the nuts,, then the bolt is screwed into an aluminum plate within the fiberglass deck which the aluminum plate was drilled and tapped for that bolt size

Listen to Dave. He knows Hunters very well. My boat has through bolted stanchions

 

[rgranger]

Listen to Dave. He knows Hunters very well. My boat has through bolted stanchions

Yep

Hunters have aluminum backing plates embedded in the fiberglass.

 

[Scott B]

From 2004 ( 41DS would be ) and up the stanchion base has bolts attached into the base itself and nuts from below. I recently replaced all mine.

Hunter 41DS stanchion and base, 24 in, 2004-present

Hunter 41DS stanchion and base, 24 in, 2004-present

shop.hunterowners.com

 

[dkinzer]

I recently replaced all mine.

I ordered and have received a new base and stanchion from SBO. The SBO page indicates that 2004-2010 stanchions are slightly smaller diameter than those from 2011 on. On your 2005, was the bolt spacing on the old bases the same (2.0 inches) as on the new ones or did you need to re-drill? Also, what needed to be done to get access to the nuts on the underside?

 

[Scott B]

I ordered and have received a new base and stanchion from SBO. The SBO page indicates that 2004-2010 stanchions are slightly smaller diameter than those from 2011 on. On your 2005, was the bolt spacing on the old bases the same (2.0 inches) as on the new ones or did you need to re-drill? Also, what needed to be done to get access to the nuts on the underside?

Spacing was the same, drop in. I had to drop the wood liner above the nav station and settee on the other side. Don't remove the teak handrail. Not necessary and big pain to reinstall. Loosened plastic liner in v-berth and pulled down enough to get wrench in there.

 

[jssailem]

I favor Bed-it Tape. I used it to bed the binnacle brace/guard on my boat. No leaks and firmly held in place.