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02-14-2014, 12:08 PM
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#1
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Rivet Master 
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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Sealants Summary ...
I've been reviewing the forums to determine which sealants to buy for water-sealing maintenance on my new-to-me Airstream. I've come up with the following list of sealants from the posts of others. If anyone has suggestions regarding these sealants, suggestions for better products, or sources for these products, I'd really like to hear them!!
For wheel wells/underbody:
Vulkem 116
Trempro 635
Roof
Silkaflex 721 White
Windows/Trim
Silkaflex 221 Gray
Parbond Gray or Clear
Small seams (between aluminum panels)
Acryl-R
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02-14-2014, 12:21 PM
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#2
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Rivet Master
1960 33' Custom
Athens
, Georgia
Join Date: Jun 2005
Posts: 1,373
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Hi Bob, I've bought stuff from VintageTrailerSupply; and in Canada Fastenal carries some as does a store called Cascade in Edmonton.
__________________
1960 Sovereign 33' Pacific Railroad Custom
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02-15-2014, 10:09 AM
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#3
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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I'm adding to the above list of sealants, based on the thread by sailorii which mentioned that Airstream now recommends AdSeal products.
For wheel wells/underbody:
Vulkem 116
Trempro 635
Adseal Premium Quality Sealant Gray (neutral silicone based)
Roof
Silkaflex 721 White
Adseal Premium Quality Sealant White (neutral silicone based)
Windows/Trim/Rubrail
Silkaflex 221 Gray
Parbond Gray or Clear (small hand tubes)
Small seams (between aluminum panels)
Acryl-R (small cans)
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02-16-2014, 07:42 AM
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#4
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Rivet Master
2010 28' Flying Cloud
Lower Alabama
, USA
Join Date: Mar 2012
Posts: 658
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Tin, Thanks for the summary of current application and this should be very helpful to folks. Your work here is much appreciated.
This can be a tangle though since some of the caulks that were originally used are simply no longer available. For example I understand that Sikaflex 721UV Gray was used on the windows in the past but is no longer available from Sika but the white is. 721 is a silane terminated polyurethane and evidently has a large dose of UV stabilizer in it (good) for weathering resistance. These hybrid caulks (as 3M calls them) typically cost a bit more. I believe the demise of 721 Gray is what caused the factory to move to the Adseal about three years ago. From my research a couple of years ago, it was evident the Adseal is not a silane terminated polyurethane which makes it different than what is on my trailer.
So when working on my 2010, I try to assure compatibility when doing repairs and that causes a lot of digging for information on my part to be sure that what I put on top is going to be compatible with what is already there.
My perfectionist tendencies probably cause me to overwork this and I will also tell you that caulking is not a pleasurable past time for me and I want to minimize the frequency of rework!
__________________
Alan
"If you must choose between two evils, pick the one you never tried before!"
Air #64439
Southeastern Camping Unit WBCCI #5033
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02-16-2014, 07:51 AM
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#5
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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Corrected the sealants list again, based on info from Alan that Silkaflex 721 Gray is no longer available.
For wheel wells/underbody:
Vulkem 116
Trempro 635
Adseal Premium Quality Sealant Gray (neutral silicone based)
Roof
Silkaflex 721 White
Adseal Premium Quality Sealant White (neutral silicone based)
Windows/Trim/Rubrail
Parbond Gray or Clear (small hand tubes)
Small seams (between aluminum panels)
Acryl-R (small cans)
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02-16-2014, 07:57 AM
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#6
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Rivet Master
2010 28' Flying Cloud
Lower Alabama
, USA
Join Date: Mar 2012
Posts: 658
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Tin,
The Sikaflex 221 that you had for the windows is available.
My point was that the 221 is just not the same as the 721. It is not a silane terminated polyurethane.
Sorry for the confusion.
__________________
Alan
"If you must choose between two evils, pick the one you never tried before!"
Air #64439
Southeastern Camping Unit WBCCI #5033
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02-16-2014, 08:04 AM
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#7
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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My mistake, Alan.  Corrected the list.
For wheel wells/underbody:
Vulkem 116
Trempro 635
Adseal Premium Quality Sealant Gray (neutral silicone based)
Roof
Silkaflex 721 White
Adseal Premium Quality Sealant White (neutral silicone based)
Windows/Trim/Rubrail
Silkaflex 221 Gray
Parbond Gray or Clear (small hand tubes)
Small seams (between aluminum panels)
Acryl-R (small cans)
__________________
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02-19-2014, 09:56 AM
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#8
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3 Rivet Member 
1971 27' Overlander
Dickinson
, North Dakota
Join Date: Sep 2013
Posts: 129
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Thanks for the list and this will be a great resource. Since we are still in the middle of winter up here I'm wondering what temperatures these can be applied in as well as maybe an ideal application temperature? I have a couple of projects that could use some of these sealants and the daytime high temps here are barely touching freezing. Can I still effectively use any of these or do I need to wait for warmer weather?
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02-19-2014, 01:04 PM
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#9
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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I'm far from expert in this chilipepper, but I'd wait until the temperatures are at least 50F. I've checked a couple of tubes of silicone II that I have here, they say 5C before application (about 40F). The acrylics and polyurethanes probably want temperatures higher than 50F to insure that the products are pliable enough for easy (and tidy) application.
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02-19-2014, 04:00 PM
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#10
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Rivet Master
2010 25' FB Flying Cloud
Davenport
, Iowa
Join Date: Sep 2007
Posts: 2,148
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I just got my "Capt. Tolley"s Creeping Crack Cure" that was suggested in another thread to seal the rivets.
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02-19-2014, 07:00 PM
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#11
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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Added rivet sealer based on Airtandem's post:
For wheel wells/underbody:
Vulkem 116
Trempro 635
Adseal Premium Quality Sealant Gray (neutral silicone based)
Roof
Silkaflex 721 White
Adseal Premium Quality Sealant White (neutral silicone based)
Windows/Trim/Rubrail
Silkaflex 221 Gray
Parbond Gray or Clear (small hand tubes)
Small seams (between aluminum panels)
Acryl-R (small cans)
Rivet sealer
Captain Tolley's Creeping Crack Cure
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02-19-2014, 08:04 PM
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#13
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Rivet Master
2015 30' Classic
2012 28' International
Greensboro
, North Carolina
Join Date: Aug 2011
Posts: 1,708
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This is such a great post! I've printed it and will keep it handy....I keep a supply of Parbond, Silkaflex, Vulkem and Trempro handy. Also a roll of butyl tape that I've used on a couple of occasions. A spray can of the Pewter touch-up paint also comes in handy.
__________________
_________________
"SilverLeaf II" 2015 30' Classic
2019 RAM 2500 Limited 4x4 CC w/6.7L Cummins
ProPride 3P
AIR# 58452
WBCCI # 3430-Unit 21
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02-19-2014, 09:10 PM
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#14
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2 Rivet Member 
1965 20' Globetrotter
Sacramento
, California
Join Date: Nov 2013
Posts: 65
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As an owner of a vintage AS (1965), are these sealants also recommended? If not, any recommendations?
__________________
Jayne & Brian
Luna, 1965 Globe Trotter 20’ Twin
2018 Toyota Sequoia
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02-19-2014, 09:36 PM
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#15
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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Added the Loctite sealants based on acstokes recommendations.
For wheel wells/underbody:
Vulkem 116
Trempro 635
Adseal Premium Quality Sealant Gray
Roof
Silkaflex 721 White
Adseal Premium Quality Sealant White
Loctite® PL® S30 Polyurethane Roof and Flashing Sealant
Windows/Trim/Rubrail
Silkaflex 221 Gray
Parbond Gray or Clear (small hand tubes)
Loctite® PL® S40 Polyurethane Window Door and Siding Sealant
Small seams (between aluminum panels)
Acryl-R (small cans)
Rivet sealer
Captain Tolley's Creeping Crack Cure
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03-10-2014, 09:22 AM
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#16
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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Added exterior lights to group 4
For wheel wells/underbody:
Vulkem 116
Trempro 635
Adseal Premium Quality Sealant Gray
Roof
Silkaflex 721 White
Adseal Premium Quality Sealant White
Loctite® PL® S30 Polyurethane Roof and Flashing Sealant
Windows/Trim/Rubrail
Silkaflex 221 Gray
Parbond Gray or Clear (small hand tubes)
Loctite® PL® S40 Polyurethane Window Door and Siding Sealant
Small seams (between aluminum panels)/Exterior Lights
Acryl-R (small cans)
Rivet sealer
Captain Tolley's Creeping Crack Cure
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10-07-2014, 03:38 PM
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#17
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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Added Dicor to roof sealants
For wheel wells/underbody:
Vulkem 116
Trempro 635
Adseal Premium Quality Sealant Gray
Roof
Silkaflex 721 White
Adseal Premium Quality Sealant White
Dicor self-levelling sealant
Loctite® PL® S30 Polyurethane Roof and Flashing Sealant
Windows/Trim/Rubrail
Silkaflex 221 Gray
Parbond Gray or Clear (small hand tubes)
Loctite® PL® S40 Polyurethane Window Door and Siding Sealant
Small seams (between aluminum panels)/Exterior Lights
Acryl-R (small cans)
Rivet sealer
Captain Tolley's Creeping Crack Cure
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11-15-2014, 06:52 PM
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#18
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Full Time Adventurer
2007 27' International CCD FB
Nomadic
, USA
Join Date: Jul 2013
Posts: 2,748
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Great thread Bob, very useful for a newb.
__________________
Family of 5 exploring the USA with a Ram Power Wagon & Airstream in tow.
OUR BLOG | INSTAGRAM
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11-26-2014, 01:55 PM
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#19
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2 Rivet Member
1972 31' Sovereign
Valparaiso
, Indiana
Join Date: Jun 2014
Posts: 87
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This is so helpful TinTin. Thanks so much for posting
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12-04-2014, 05:42 PM
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#20
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Rivet Master
2009 23' FB Flying Cloud
Canmore
, Alberta
Join Date: Nov 2013
Posts: 1,762
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(removed LocTite PLS30 from roof sealants)
For wheel wells/underbody:
Vulkem 116
Trempro 635
Adseal Premium Quality Sealant Gray
Roof:
Silkaflex 721 White
Adseal Premium Quality Sealant White
Dicor self-levelling sealant
Windows/Trim/Rubrail:
Silkaflex 221 Gray
Parbond Gray or Clear (small hand tubes)
Loctite® PL® S40 Polyurethane Window Door and Siding Sealant
Small seams (between aluminum panels)/Exterior Lights:
Acryl-R (small cans)
Rivet sealer:
Captain Tolley's Creeping Crack Cure
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