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02-24-2015, 04:38 PM
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#1
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2 Rivet Member
1988 29' Excella
Plant City
, Florida
Join Date: Dec 2014
Posts: 35
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How to remove silicone caulk
I got on top of my trailer today to seal the fantastic fan and found a lot of silicone on the seam where the roof panels end and the end cap starts is there anything that Will remove the silicone after I scrape off as much as I can first ?
Joe
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02-24-2015, 04:49 PM
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#2
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3 Rivet Member
1973 25' Tradewind
1962 22' Safari
Augusta
, Georgia
Join Date: Aug 2011
Posts: 169
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I used the silicon caulk remover that is available form Vintage Trailer Supply. Was very pleased with the performance (& service from VTS).
dennis
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02-24-2015, 04:54 PM
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#3
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King of the Zebra Speedo
Obrien
, Florida
Join Date: Aug 2012
Posts: 1,439
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I have incredible amounts of silicone on my trailer from the PO. THe remover I purchased from Home Depot just didn't work very well. It did a heck of a job removing the clear coat, not so great at the silicone. Will have to check into VTS's remover...
-Red, desperate to de-siliconize...
__________________
Somebody ought to clean these windows. There is a tremendous buildup of gook all over them...
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02-24-2015, 04:59 PM
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#4
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Always learning
1972 29' Ambassador
1962 19' Globetrotter
1951 21' Flying Cloud
Central
, Texas
Join Date: Oct 2010
Posts: 2,881
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Drape a rag soaked in mineral spirits over the silicone for about 20 min and it will soften it up and make it easy to remove.
__________________
Lance
Work is never done, so take time to play!
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02-24-2015, 05:06 PM
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#5
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2 Rivet Member
1988 29' Excella
Plant City
, Florida
Join Date: Dec 2014
Posts: 35
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I will look at VTS also.
Thanks
Joe
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02-24-2015, 07:00 PM
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#6
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Retired.
Currently Looking...
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, At Large
Join Date: Jun 2003
Posts: 21,276
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You can get Malco Cosmoline Remover. A couple minutes' rubbing with a cloth soaked in the stuff, and the silicone will wrinkle up and scrape off easily.
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
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02-25-2015, 12:08 PM
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#7
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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Quote:
Originally Posted by wjcwill
I got on top of my trailer today to seal the fantastic fan and found a lot of silicone on the seam where the roof panels end and the end cap starts is there anything that Will remove the silicone after I scrape off as much as I can first ?
Joe
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Hi Joe
There is no easy answer for this, and the difficulty of removal and effectiveness of the various products will vary from one project to the next. Whether due to age of the silicone, care taken in application, or formulation of the product used, I do not know.
I have had the best results with a heat gun and an improvised wooden scraper. A paint stir stick or a doorframe shim will work. Plastic scrapers will soften in the heat and metal ones will scratch the aluminum. Care must be taken not to damage or ignite anything nearby.
I have used the silicone remover sold by VTS. While effective, it is slow going and will not work especially well on thick applications of silicone. It is also expensive.
__________________
To learn to see below the surface, you must adjust your altitude
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02-25-2015, 02:39 PM
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#8
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3 Rivet Member
Currently Looking...
Dallas Center/Des Moines
, Iowa
Join Date: May 2004
Posts: 142
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I too have used a heat gun on silicone but not on my AS. The application was on metal ducting that had been slip-sealed with silicone as they were joined together. It loosened them up in no time and was able to disassemble very easily. As I recall the vapors were toxic so ventilation may be appropriate. It was somewhat messy. Good luck.
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02-25-2015, 03:05 PM
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#9
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Rivet Master
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton
, Arkansas
Join Date: Mar 2013
Posts: 5,868
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My trailer required a lot of elbow grease, careful mechanical removable with many straight edge razor blades.
1/2 Ton 4WD Truck, 72 Sovereign Hensley Arrow
__________________
The fact that I am opinionated does not presuppose that I am wrong......
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02-25-2015, 03:09 PM
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#10
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ShinyPete
2014 27' Flying Cloud
Bushnell
, Florida
Join Date: Nov 2013
Posts: 413
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WJC - what year is your coach? If it's a relatively newer Airstream you may be seeing factory roof caulk. Is it white and silicone "feeling", and alongside as well as inside the "panel gaps"? I discovered the shiny white caulk on the roof seams of our 2014 FC 27fb is factory and while not silicone per se it is silicone like.....in that nothing else sticks to it. It may be Sikaflex (polyurethane) or Dicor or something like that............
If your coach is say 10 years old or older and the caulk looks like a previous owners "the bigger the glob the better the job" project over the top of everything up there then it's probably silicone.......
Sent from my iPhone using Airstream Forums
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02-25-2015, 03:17 PM
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#11
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Rivet Master
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton
, Arkansas
Join Date: Mar 2013
Posts: 5,868
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I despise silicone calking. Cant stand the stuff. It should ONLY be used INSIDE the joint where two pieces lap, never to fill or seal an exterior gap.
Eventually this stuff starts peeling and it looks like CRAP, it is hard to fix, and it is just bad. I would sooner use latex as silicone for seam sealing.
1/2 Ton 4WD Truck, 72 Sovereign Hensley Arrow
__________________
The fact that I am opinionated does not presuppose that I am wrong......
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02-25-2015, 03:37 PM
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#12
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King of the Zebra Speedo
Obrien
, Florida
Join Date: Aug 2012
Posts: 1,439
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Quote:
Originally Posted by J. Morgan
I despise silicone calking. Cant stand the stuff. It should ONLY be used INSIDE the joint where two pieces lap, never to fill or seal an exterior gap.
Eventually this stuff starts peeling and it looks like CRAP, it is hard to fix, and it is just bad. I would sooner use latex as silicone for seam sealing.
1/2 Ton 4WD Truck, 72 Sovereign Hensley Arrow
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I will only use Vulkem, or an equivalent type caulk. I hate the silicone with a passion. I can take a die grinder with a mild abrasive wheel, get the outer layer of the old Vulkem off, then wipe with mineral spirits to remove the rest... So much nicer when you have to reseal.
-Red, anti-silicone...
__________________
Somebody ought to clean these windows. There is a tremendous buildup of gook all over them...
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02-25-2015, 04:31 PM
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#13
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2 Rivet Member
1988 29' Excella
Plant City
, Florida
Join Date: Dec 2014
Posts: 35
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I have a 88 Excella 29' my father owned the AS before me and gave it to me last year when he stopped traveling he is the one that put the silicone on it there is some also on the rub rails and over some of the windows also my worry is if I don't clean off the silicone on the roof seams good enough the new sealant will not stick and reseal the seam. It is not leaking now
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02-25-2015, 04:33 PM
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#14
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Rivet Master
Commercial Member
Vintage Kin Owner
Naples
, Florida
Join Date: Dec 2005
Posts: 7,508
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How to remove silicone caulk
Silicone should NEVER BE USED ON AN RV!!!!!!!! ANYWHERE!!!!
PERIOD.
Lew Farber
RVIA/RVDA Nationally Certified Master Tech
Master Tech Energy Systems, Inc.
AM Solar Certified Installation Center
Lifeline Batteries**Magnum Inverters
541-490-6357
__________________
lewster
Solar Tech Energy Systems, Inc.
Victron Solar Components and Inverters, Zamp Solar Panels, LiFeBlue and Battle Born Lithium Batteries, Lifeline AGM Batteries
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02-25-2015, 05:07 PM
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#15
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Rivet Master
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton
, Arkansas
Join Date: Mar 2013
Posts: 5,868
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Quote:
Originally Posted by wjcwill
........ also my worry is if I don't clean off the silicone on the roof seams good enough the new sealant will not stick and reseal the seam. It is not leaking now
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When you start taking it off, clean it off well. If you are judicious with a straight edge razor, it will come off clean. You will need to get it all off for new calking to work.
You will go through several blades in a short time so I recommend that you just buy a box of a hundred...
My 72 had silicone EVERYWHERE and lots of it. Cleaning that stuff off sucked big time...
1/2 Ton 4WD Truck, 72 Sovereign Hensley Arrow
__________________
The fact that I am opinionated does not presuppose that I am wrong......
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02-25-2015, 05:15 PM
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#16
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2 Rivet Member
1988 29' Excella
Plant City
, Florida
Join Date: Dec 2014
Posts: 35
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Thanks for the info I did not think it was going to be simple. This forum is great
Joe
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02-25-2015, 05:28 PM
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#17
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Master of Universe
2008 25' Safari FB SE
Grand Junction
, Colorado
Join Date: Sep 2007
Posts: 12,711
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Quote:
Originally Posted by wjcwill
Thanks for the info I did not think it was going to be simple.
Joe
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It is good you are accepting reality. Anything that makes it easy to remove will probably remove things you don't want to remove. Acetone is my last resort solvent, but it removes clear coat too and I'm not sure silicone is vulnerable to it. I go the scrape route when I find silicone caulk in my house, although I might also try denatured alcohol just because it might help (unfortunately you can't drink it), but it makes me feel like it may be easier to scrape.
The irony of silicone is that something so hard to remove still leaks after several years. There are caulks with a mixture of silicone and other things—they are the paintable caulks. I don't know if they are as bad as silicone, but I'd stay away from them unless you find out that answer. I use Sikaflex.
Gene
__________________
Gene
The Airstream is sold; a 2016 Nash 24M replaced it.
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02-25-2015, 05:34 PM
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#18
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Rivet Monster
1975 31' Sovereign
1980 31' Excella II
Sprung Leak
, North Carolina
Join Date: Jun 2003
Posts: 7,172
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Quote:
Originally Posted by lewster
Silicone should NEVER BE USED ON AN RV!!!!!!!! ANYWHERE!!!!
PERIOD.
Lew Farber
RVIA/RVDA Nationally Certified Master Tech
Master Tech Energy Systems, Inc.
AM Solar Certified Installation Center
Lifeline Batteries**Magnum Inverters
541-490-6357
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or a lot of other places either!
Interestingly enough Keystone is using it in copious quantities on the Coleman line of travel trailers.
Aaron
__________________
....so many Airstreams....so little time...
WBCCI #XXXX AIR #2495
Why are we in this basket...and where are we going
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02-25-2015, 09:27 PM
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#19
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Rivet Master
Commercial Member
Vintage Kin Owner
Naples
, Florida
Join Date: Dec 2005
Posts: 7,508
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Quote:
Originally Posted by wahoonc
or a lot of other places either!
Interestingly enough Keystone is using it in copious quantities on the Coleman line of travel trailers.
Aaron
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WAIT.....'till the leaking starts!!!
__________________
lewster
Solar Tech Energy Systems, Inc.
Victron Solar Components and Inverters, Zamp Solar Panels, LiFeBlue and Battle Born Lithium Batteries, Lifeline AGM Batteries
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02-26-2015, 12:11 AM
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#20
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Rivet Master
2005 19' Safari
GLENDALE
, AZ
Join Date: Aug 2004
Posts: 2,453
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Just curious about Sikaflex -- How hard is it to remove?
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