Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 26-03-2019, 11:10   #1
Registered User

Join Date: Oct 2016
Location: Sarasota, FL.
Boat: Morgan, Out Island. 41
Posts: 10
Best bedding compound

I need to pull all the stantions on our 41' Morgan Out Island. What is the best bedding compound to use. 5200 is out there but what else? They have lasted 40 years and I would like it to last another 40.
__________________

SVLastTango is offline   Reply With Quote
Old 26-03-2019, 11:16   #2
Registered User
 
rgleason's Avatar

Join Date: Mar 2012
Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
Posts: 14,158
Re: Best bedding compound

Quote:
Originally Posted by SVLastTango View Post
I need to pull all the stantions on our 41' Morgan Out Island. What is the best bedding compound to use. 5200 is out there but what else? They have lasted 40 years and I would like it to last another 40.
5200 may be difficult to remove the stanchions for rebed. Some heat applied carefully may help. There is a solvent for 5200 but it needs to be worked in and takes time. I would use 4200 for rebedding because it will be easier to remove next time.
__________________

rgleason is offline   Reply With Quote
Old 26-03-2019, 11:19   #3
Registered User
 
rgleason's Avatar

Join Date: Mar 2012
Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
Posts: 14,158
Re: Best bedding compound

Also another alternative is to look at mainsail's marinehowto website where he shows how to countersink bolt holes and bed with butyl rubber for a longlasting seal. I think that would be my preference over 4200, although I've done it both ways.
rgleason is offline   Reply With Quote
Old 26-03-2019, 15:30   #4
cruiser

Join Date: Jan 2017
Boat: Retired from CF
Posts: 13,304
Re: Best bedding compound

And the specific butyl he sells there is known to be best in the world, for that usage anyway.
john61ct is offline   Reply With Quote
Old 26-03-2019, 15:35   #5
Marine Service Provider
 
witzgall's Avatar

Join Date: Oct 2006
Location: Eastern Shore, MD
Boat: Camper Nicholson 44 Ketch
Posts: 1,989
Re: Best bedding compound

Bed-it from marinehowto.com.

Chris
witzgall is offline   Reply With Quote
Old 26-03-2019, 17:27   #6
Registered User

Join Date: Nov 2016
Location: Sarnia ON
Boat: S2 9.1
Posts: 139
Re: Best bedding compound

Yep I did my stanchion bases with 4200 and my experience was that after about three years it gets hard and then when there is movement, which there is with stanchions, it does not reseal well. Butyl works well there.


4200 is great stuff where there is no movement such as through hull fittings!
Gary Mc is offline   Reply With Quote
Old 01-04-2019, 15:30   #7
Registered User
 
frozenhawaiian's Avatar

Join Date: Dec 2014
Location: Portland, Maine
Boat: 1970 hinckley 38 / 1975 john alden boothbay challenger 58
Posts: 267
Re: Best bedding compound

unless you don't ever plan on removing them again I'd advise against 5200
frozenhawaiian is offline   Reply With Quote
Old 01-04-2019, 18:23   #8
Moderator
 
Adelie's Avatar

Join Date: Feb 2010
Location: La Ciudad de la Misión Didacus de Alcalá en Alta California, Virreinato de Nueva España
Boat: Cal 20
Posts: 10,817
Re: Best bedding compound

I used Dolphinite.
__________________
Num Me Vexo?
A house is but a boat so poorly built and so firmly run aground no one would think to try and refloat it.
Adelie is offline   Reply With Quote
Old 01-04-2019, 21:04   #9
Registered User

Join Date: Jan 2015
Location: Seattle, WA
Boat: 1980 Pacific International Marine 41.5
Posts: 530
Re: Best bedding compound

Use bedit butyl tape. If you cant afford it, use other butyl tape. You should use a compound that retains elasticity throughout its life. 4200,5200 does, but will be a bear to remove later and just because it's still held via the sealant doesnt mean its sealed.
chowdan is online now   Reply With Quote
Old 24-04-2019, 05:18   #10
Registered User
 
rgleason's Avatar

Join Date: Mar 2012
Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
Posts: 14,158
Re: Best bedding compound

Yes, from my experience, 4200 will eventually need to be redone. My experience has been every 3 to 6 years, but isn't this just due to it being a stanchion or a stay plate, subject to more pressure and use?

Does anyone have long term experience using buytl that confirms a longer period before rebedding?

Perhaps I used 4200 on my pulpit because it was available, and last year after about 5 years I had to redo it. Would buyl last many years longer?

PS: I don't find 4200 to be that hard to remove under stanchions.
rgleason is offline   Reply With Quote
Old 24-04-2019, 05:24   #11
Registered User
 
Group9's Avatar

Join Date: Sep 2010
Posts: 2,452
Images: 10
Re: Best bedding compound

I used 5200 the last time I had to rebed my stanchions. I just hope I die before they need to come off again!

Side note. I just spent two days to remove the anchor pulpit from our center console that had been bedded with 5200 in 1991. It did not want to come off! When they say “permanent” they ain’t just blowing smoke.
__________________
Founding member of the controversial Calypso rock band, Guns & Anchors!
Group9 is offline   Reply With Quote
Old 24-04-2019, 06:15   #12
cruiser

Join Date: Jan 2017
Boat: Retired from CF
Posts: 13,304
Re: Best bedding compound

Yes 5200 is primarily a strong adhesive, performance as a sealant secondary.

5200 should not be considered a "bedding compound", especially for a component that even **might** need re-bedding down the road.
john61ct is offline   Reply With Quote
Old 24-04-2019, 06:59   #13
Registered User
 
siamese's Avatar

Join Date: Dec 2008
Posts: 209
Re: Best bedding compound

Definitely butyl tape from MaineSail.
siamese is offline   Reply With Quote
Old 24-04-2019, 07:53   #14
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 2,416
Re: Best bedding compound

Butyl can be an effective substitute by anyone who can’t use traditional sealants without causing a mess, however, it isn’t widely recommended for a reason. Actually, a few reasons.

Everyone markets their version as better than other butyl compounds and the reality is that the components of butyls vary according to the manufacturers specs, many not designed for the use intended here.

Also, temperature range can affect all butyls changing the efficacy of some varieties and no one specifies useful temp range reliably. Temp variation and exposure to ambient conditions also can greatly reduce effective lifetime.

Further, what motivates some to use it is easy rather than efficacy.

If you want to do it right, use the right tools...
S/V Illusion is offline   Reply With Quote
Old 24-04-2019, 11:03   #15
Registered User

Join Date: Jan 2015
Location: Seattle, WA
Boat: 1980 Pacific International Marine 41.5
Posts: 530
Re: Best bedding compound

Quote:
Originally Posted by rgleason View Post
Yes, from my experience, 4200 will eventually need to be redone. My experience has been every 3 to 6 years, but isn't this just due to it being a stanchion or a stay plate, subject to more pressure and use?

Does anyone have long term experience using buytl that confirms a longer period before rebedding?

Perhaps I used 4200 on my pulpit because it was available, and last year after about 5 years I had to redo it. Would buyl last many years longer?

PS: I don't find 4200 to be that hard to remove under stanchions.
I've used butyl in a number of applications on my boat and off the boat.

I've found that butyl will last longer than others IF its sole purpose is a sealant. Things like stanchions that are bolted through dont need an adhesive, rather need a sealant. The sealant properties of butyl allow great flexibility which do lead to "oozing" over time but never found this to be a serious problem(even when on boats in the tropics).

I've found butyl is much easier to remove when compared with 4200. Removing port lights sealed with 4200 is a bear in comparison to ones sealed with butyl.

Sand paper removes 4200 fairly easy
__________________

chowdan is online now   Reply With Quote
Reply

Tags
bed

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Best bedding compound/sealant? Bigjim Deck hardware: Rigging, Sails & Hoisting 6 17-03-2018 22:22
Bedding Compound That Dries Hard rebel heart Construction, Maintenance & Refit 26 05-08-2013 12:51
Bedding Compound for Hatches Ziggy Construction, Maintenance & Refit 7 07-05-2012 07:27
Bedding Compound MABell Construction, Maintenance & Refit 4 08-01-2010 15:38
Bedding Compound/Sealer SkiprJohn Construction, Maintenance & Refit 9 30-06-2006 12:02

Advertise Here


All times are GMT -7. The time now is 12:39.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.