Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-25-2012, 08:19 AM   #21
sunny 75
 
sunny75's Avatar
 
1975 27' Overlander
selah , Washington
Join Date: May 2012
Posts: 34
Images: 1
silicone is evil

Hi there,
I'm relatively new to this too (just got our 75 in April), so I'm not an expert on fixing leaks. All I know is that I spent a lot of time this spring trying to remove pounds of silicone caulk from around every rivet and seam so I could polish the trailer. It was really hard to remove and something in it eats the aluminum. Most Airstreamers don't have a problem with Vulkem so that is what we are using. Good luck!
sunny75 is offline   Reply With Quote
Old 09-25-2012, 09:12 AM   #22
Rivet Master
 
Alumaholic's Avatar

 
2019 27' Flying Cloud
Albuquerque , New Mexico
Join Date: Nov 2005
Posts: 1,915
Images: 36
Don't Use Silicone Caulk on Your Airstream

There, it's been said again for about the 999th time on these forums.
You can trust a sales rep who has no direct experience, or you can trust fellow Airstream owners who care about your investment and who:
- Have direct experience
- Have extensive training in caulks and sealants and their applications
- Have owned and restored multiple Airstreams
- Have spent many long and tedious hours removing silicone caulk
- Have declined to purchase Airstreams where silicone caulk was used by POs.

There are several great choices out there for different caulking applications on your Airstream. I am not going to reiterate all the good information. "Lewster" has some good advice as do others.

To quote "Wahoonc"..."Vulkem/Trempro or equivalent sealants from Sonneborn or Sikalastic are much easier to remove and reseal when the need arises."
Add Sikaflex to the list. Other urethane based caulks may also be used. (Yes, Tremco makes urethane based caulks. I'm surprised Lyn Dickinson didn't mention this alternative.)
__________________
Ken L
2019 Flying Cloud 27FB
2020 GMC Sierra 1500 Crew Cab 6.2L Max Tow
Four Corners Unit WBCCI #5783
Alumaholic is offline   Reply With Quote
Old 09-25-2012, 09:40 AM   #23
Rivet Master
 
aftermath's Avatar
 
2006 25' Safari FB SE
Spokane , Washington
Join Date: Sep 2009
Posts: 1,503
Take away the issue of using silicone with that acid that "eats" aluminum, what is the real drawback? From what I read it has more to do with how the silicone was applied. Most complain about smeared silicone covering seams and goops of the stuff that is very difficult to remove. Isn't it a good thing if it is difficult to remove?

Suppose you use a good quality silicone that is formulated for aluminum and you applied it with care and precision, what would be the problem? I am in the ongoing process of resealing my trailer and I am using sika-flex as per advice from our local dealer. I have no complaints with this product but I am starting to question all of the criticism of silicone I am hearing. Remember, there is more one way to skin a cat (whoops, bad analogy), cook a turkey (?), mow the lawn.........you get my idea.
aftermath is offline   Reply With Quote
Old 09-25-2012, 11:05 AM   #24
Rivet Master
 
Someday'59's Avatar

 
1959 26' Overlander
Powder Springs , Georgia
Join Date: Jan 2010
Posts: 664
Images: 18
another thing about silicone

So, another thing about silicon is that dirt sticks to it. The dirt sticking to it... it may or may not be a big deal to you. For me, it was a big deal. It made our trailer look gross.
__________________
~Lynnetta

my restoration & travel blog:
https://someday1959.blogspot.com
Someday'59 is offline   Reply With Quote
Old 09-25-2012, 12:21 PM   #25
Rivet Master
 
Ganglin's Avatar
 
1971 27' Overlander
Central , Ohio
Join Date: Jun 2006
Posts: 2,365
Images: 13
Quote:
Originally Posted by Someday'59 View Post
So, another thing about silicon is that dirt sticks to it. The dirt sticking to it... it may or may not be a big deal to you. For me, it was a big deal. It made our trailer look gross.
If you've ever used TremPro 635 (vulkem), and have to work outside, it takes forever to set up and every piece of dirt, dust, etc. in the air stick to it permanently. 116 sets faster but still does the same thing - they are all very sticky sealants before they set up, including silicone.
Ganglin is offline   Reply With Quote
Old 09-25-2012, 12:24 PM   #26
Rivet Master
 
Someday'59's Avatar

 
1959 26' Overlander
Powder Springs , Georgia
Join Date: Jan 2010
Posts: 664
Images: 18
Stuff stuck to the silicon after is was set up, too. ick!
__________________
~Lynnetta

my restoration & travel blog:
https://someday1959.blogspot.com
Someday'59 is offline   Reply With Quote
Old 09-25-2012, 12:41 PM   #27
Rivet Master
 
Ganglin's Avatar
 
1971 27' Overlander
Central , Ohio
Join Date: Jun 2006
Posts: 2,365
Images: 13
The TremPro I used on my windows does the same. It takes on dirt and pollutant stains and requires a focused scrubbing to make it look decent.

It's been there 4 years now and is starting to crack and craze already. That will make it harder to keep clean. As I said in a previous post on this topic - I used it once, so I know what the results are, and I'll never use it again.

I have better things to do than replace sealant every 4 or 5 years.
Ganglin is offline   Reply With Quote
Old 09-25-2012, 01:36 PM   #28
Site Team
 
Aage's Avatar
 
1974 31' Sovereign
Ottawa , ON
Join Date: May 2008
Posts: 11,219
Images: 25
Quote:
Originally Posted by aftermath View Post
Take away the issue of using silicone with that acid that "eats" aluminum, what is the real drawback? From what I read it has more to do with how the silicone was applied. Most complain about smeared silicone covering seams and goops of the stuff that is very difficult to remove. Isn't it a good thing if it is difficult to remove?
But isn't that like saying if your car has no gas in the tank, you won't have a traffic accident? I mean, the fact is, it DOES attack the aluminum. I want to say that it's acetic acid which does the bad stuff, but I won't swear to it.

All I can say for sure is that on my trailer, where the PO used silicone (mostly around windows), the silicon went either black or green as it aged. I don't know if that is a result of bad application technique or not, and frankly I don't care. The simple fact that it is so difficult to remove is PLENTY for me to stay away from it.
__________________
“Courage is being scared to death, but saddling up anyway.”
...John Wayne...........................
Aage is offline   Reply With Quote
Old 09-25-2012, 01:46 PM   #29
Rivet Master
 
aftermath's Avatar
 
2006 25' Safari FB SE
Spokane , Washington
Join Date: Sep 2009
Posts: 1,503
Aage, I was going by others have said about the silicone formulated for use with aluminum, the kind without the acetic acid. Again, if this product is out there then the argument against it eating the aluminum is void.

I have not used any of this on my trailer so I can't speak with any authority.
aftermath is offline   Reply With Quote
Old 09-25-2012, 02:31 PM   #30
Rivet Master
 
Alumaholic's Avatar

 
2019 27' Flying Cloud
Albuquerque , New Mexico
Join Date: Nov 2005
Posts: 1,915
Images: 36
Silicone Caulk Attracts Dust

Cured silicone caulk attracts dust.
Almost all caulks must be protected from dust, blowing sand, kitty hair, etc. before they dry.
But silicone attracts dirt after it dries.
The wider the bead, the uglier the dusty strip.
I'm not sure why dust adheres to silicone more than urethane based caulks, but it does.
On a related note, I spent big $$ on replacement windows for my home in Albuquerque. The installer fastened the trim around every window with silicone adhesive. After a couple years of dust collection, the window trim looked terrible. It cost me more big $$ and much stucco damage to have the silicone removed. After a whole house re-stucco, a real expert on coatings and sealants sealed the joints where window frames meet stucco with architectural quality, varathane caulk.
__________________
Ken L
2019 Flying Cloud 27FB
2020 GMC Sierra 1500 Crew Cab 6.2L Max Tow
Four Corners Unit WBCCI #5783
Alumaholic is offline   Reply With Quote
Old 09-25-2012, 07:24 PM   #31
Rivet Master
 
cameront120's Avatar
 
1972 25' Tradewind
North Vancouver , British Columbia
Join Date: Feb 2006
Posts: 3,422
Images: 23
Quote:
Originally Posted by Alumaholic View Post
After a whole house re-stucco, a real expert on coatings and sealants sealed the joints where window frames meet stucco with architectural quality, varathane caulk.
I'm assuming you mean urethane?
__________________
Cameron & the Labradors, Kai & Samm
North Vancouver, BC
Live! Life's a banquet and most poor suckers are starving to death! - Mame Dennis
cameront120 is offline   Reply With Quote
Old 09-25-2012, 07:37 PM   #32
Rivet Master
 
Alumaholic's Avatar

 
2019 27' Flying Cloud
Albuquerque , New Mexico
Join Date: Nov 2005
Posts: 1,915
Images: 36
Urethane it is

Quote:
Originally Posted by cameront120 View Post
I'm assuming you mean urethane?
Varathane is a name brand description of generic urethane. My mistake.
__________________
Ken L
2019 Flying Cloud 27FB
2020 GMC Sierra 1500 Crew Cab 6.2L Max Tow
Four Corners Unit WBCCI #5783
Alumaholic is offline   Reply With Quote
Old 09-25-2012, 09:04 PM   #33
Rivet Master
 
cameront120's Avatar
 
1972 25' Tradewind
North Vancouver , British Columbia
Join Date: Feb 2006
Posts: 3,422
Images: 23
When I see Varathane, I think wood finish.
__________________
Cameron & the Labradors, Kai & Samm
North Vancouver, BC
Live! Life's a banquet and most poor suckers are starving to death! - Mame Dennis
cameront120 is offline   Reply With Quote
Old 12-18-2012, 07:22 AM   #34
2 Rivet Member
 
1974 31' Sovereign
Vintage Kin Owner
Phoenix , Arizona
Join Date: Aug 2012
Posts: 74
Like with the trailer hitch threads, the caulking threads have me totally confused. http://www.airforums.com/forums/f456...ure-87316.html

I'd like to use what works best and do it once (at least for the forseeable future.) I'm thinking I may have some silicone to remove at the rear. I have matching dents on both sides of the rear with a leak on the right. I was hoping just to stop the leak and not get into a remove and reinstall process but I'm willing to do it right once if I can figure it all out.

If I were to purchase McKanica Silicone Caulk Remover Gel (as recommeded above) how much do I need (how far does one tube go?) Have others used this with good results or is there a better product???

Thanks!
__________________
Cheryl
girlscan2 is offline   Reply With Quote
Old 12-19-2012, 06:19 AM   #35
Rivet Master
 
Ganglin's Avatar
 
1971 27' Overlander
Central , Ohio
Join Date: Jun 2006
Posts: 2,365
Images: 13
This should give you an idea how far a supply will go.

Silicone Caulk Remover

Quote:
Originally Posted by girlscan2 View Post
Like with the trailer hitch threads, the caulking threads have me totally confused. http://www.airforums.com/forums/f456...ure-87316.html

I'd like to use what works best and do it once (at least for the forseeable future.) I'm thinking I may have some silicone to remove at the rear. I have matching dents on both sides of the rear with a leak on the right. I was hoping just to stop the leak and not get into a remove and reinstall process but I'm willing to do it right once if I can figure it all out.

If I were to purchase McKanica Silicone Caulk Remover Gel (as recommeded above) how much do I need (how far does one tube go?) Have others used this with good results or is there a better product???

Thanks!
Ganglin is offline   Reply With Quote
Old 12-19-2012, 07:57 AM   #36
Rivet Master
 
tkasten's Avatar
 
1965 22' Safari
Vassar , Michigan
Join Date: Jun 2009
Posts: 848
Images: 6
I've used McKanica Silicone Caulk Remover Gel with good results. I purchased the 8 oz. cartridge and glad I did as I needed to go over a few spots a couple of times. IMO the key to success is to spread it over the silicone w/finger (use glove) and give it time to work a day or more. I had some left over so I taped up the end of the tube and put it in the freezer with my left over Tempro.
__________________
Tim
TAC MI 14

Everyday is a Saturday
tkasten is offline   Reply With Quote
Old 12-19-2012, 10:27 AM   #37
sunny 75
 
sunny75's Avatar
 
1975 27' Overlander
selah , Washington
Join Date: May 2012
Posts: 34
Images: 1
removing silicone

I spent days removing silicone this spring and never found the magic remover. The most effective strategy I found was to use the Aircraft Remover (a Rustoleum product) that I also used to strip the clearcoat. The spray is especially lethal with sunshine heating up the aluminum. It literally sizzles! Repeated applications and the rubber scraper and a lot of elbow grease eventually did a pretty good job of getting most of it off. Be persisitant. I'm happy with the results and with the caulk residue left in the seams, we have no leaks!
sunny75 is offline   Reply With Quote
Old 12-20-2012, 07:27 AM   #38
2 Rivet Member
 
1974 31' Sovereign
Vintage Kin Owner
Phoenix , Arizona
Join Date: Aug 2012
Posts: 74
Thanks Ganglin, Tim and Sunny! More projects for a sunny day (which we have plenty of here.)
__________________
Cheryl
girlscan2 is offline   Reply With Quote
Old 12-20-2012, 01:00 PM   #39
2 Rivet Member
 
Dwellstream's Avatar
 
2012 27' FB International
Madison , Indiana
Join Date: Feb 2012
Posts: 77
I am in the glass & glazing business and most of the shops, at least in the southeast, stock and use Tremco Dymonic polyurethane. I checked what we have in stock today, and it is FC for fast cure.

We stock RTV (room temperature vulcanizing) silicone which has no acid. You might check with the local glass shop in a pinch. Most towns have one.
Dwellstream is offline   Reply With Quote
Old 12-20-2012, 07:14 PM   #40
Site Team
 
Aage's Avatar
 
1974 31' Sovereign
Ottawa , ON
Join Date: May 2008
Posts: 11,219
Images: 25
Odd how close that is to the name of the most popular sealant used on Airstream trailers: Trempro (formerly Vulkem). Trempro 635 is one variation; it comes in different colours.
__________________
“Courage is being scared to death, but saddling up anyway.”
...John Wayne...........................
Aage is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Aluminum desk top worksology Cabinets, Counter Tops & Furnishings 33 06-30-2011 05:47 AM
RemovAll 220 - will it remove old caulk? malconium Leaks - Weatherstrips, Gaskets, Caulks & Sealants 2 06-21-2011 08:26 PM
Coated Aluminum glh101282 Clearcoat, Exterior Paint & Trim 6 02-24-2011 10:38 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 11:44 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.