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Old 07-17-2018, 06:55 AM   #1
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Vulkem Questions

When folks write about Vulkem are the referring to Vulkem 116?

Is the gray Vulkem the right product for sealing the gray belly pan aluminum to the plastic Banana wrap?

Exactly when is the right use for Vulkem?
Thanks.
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Old 07-17-2018, 08:12 AM   #2
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Most folks are referring to Trempro 635 which as I understand it used to be called Vulkem.

https://www.vintagetrailersupply.com...-p/vts-267.htm

Fastenal has it sometimes but the last I bought from them was old in the tube so I'd get it from Steve at VTS.
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Old 07-17-2018, 11:20 AM   #3
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You can use gutterseal from home depot too. Great stuff blends in well
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Old 07-17-2018, 09:20 PM   #4
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Quote:
Originally Posted by 68 TWind View Post
Most folks are referring to Trempro 635 which as I understand it used to be called Vulkem.

https://www.vintagetrailersupply.com...-p/vts-267.htm

Fastenal has it sometimes but the last I bought from them was old in the tube so I'd get it from Steve at VTS.

Thanks 68 TWind, I'm familiar with Trempro 635, I have some actually, but I'm not sure it's what I need for undercarriage work.
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Old 07-17-2018, 09:21 PM   #5
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Quote:
Originally Posted by rugjenkins View Post
You can use gutterseal from home depot too. Great stuff blends in well
Hey Matt, which brand is that?
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Old 07-17-2018, 09:44 PM   #6
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Quote:
Originally Posted by Re-Pete View Post
When folks write about Vulkem are the referring to Vulkem 116?

Is the gray Vulkem the right product for sealing the gray belly pan aluminum to the plastic Banana wrap?

Exactly when is the right use for Vulkem?
Thanks.
The Vulkem of old is no longer made. The new Vulkem is not the same as was available 20 years ago. The name hangs on for some reason.

When I walk in the store at Out of Doors Mart and pickup a tube of Trempro off of the shelf it will sometimes have their price sticker with Vulkem printed on it. They advertise it the same way. (see link) I think they are telling us something. That's what I used 99% of the time.
http://odmrv.com/catalog/index.php?m...roducts_id=582

I think that Trempro is the closest thing you will find today to the old Vulkem. Any good high solids polyurethane caulk with UV resistance will work.

ODM used to have a video available at their website that showed one of their techs demonstrating the proper method of using Parrbond to seal the top of the beltline. I've used that for 20+ years, but recently I tried Lexel, as an experiment. Seems to be holding up well.

add edit
this does not apply to units recently made. Airstream has changed products in the last several years.
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Old 07-17-2018, 10:54 PM   #7
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Quote:
Originally Posted by A W Warn View Post
The Vulkem of old is no longer made. The new Vulkem is not the same as was available 20 years ago. The name hangs on for some reason.

When I walk in the store at Out of Doors Mart and pickup a tube of Trempro off of the shelf it will sometimes have their price sticker with Vulkem printed on it. They advertise it the same way. (see link) I think they are telling us something. That's what I used 99% of the time.
http://odmrv.com/catalog/index.php?m...roducts_id=582

I think that Trempro is the closest thing you will find today to the old Vulkem. Any good high solids polyurethane caulk with UV resistance will work.

ODM used to have a video available at their website that showed one of their techs demonstrating the proper method of using Parrbond to seal the top of the beltline. I've used that for 20+ years, but recently I tried Lexel, as an experiment. Seems to be holding up well.

add edit
this does not apply to units recently made. Airstream has changed products in the last several years.

I'm going to take everyone's word on this one. I guess I hadn't heard this before. I've shopped at ODM also, and I recall them using another product, Adseal, besides Tempro and Parrbond. They used it on my roof.

The Vulkem 116 product that I saw is a polyurethane caulk, also.


Anyway, thanks to all of you for your hep.
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Old 07-18-2018, 09:27 AM   #8
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Quote:
Originally Posted by Re-Pete View Post
I'm going to take everyone's word on this one. I guess I hadn't heard this before. I've shopped at ODM also, and I recall them using another product, Adseal, besides Tempro and Parrbond. They used it on my roof.

The Vulkem 116 product that I saw is a polyurethane caulk, also.


Anyway, thanks to all of you for your hep.
Adseal is silicone. I would not use that anywhere on my trailer, even though Airstream has started using it. When maintenance is needed, no caulking will stick to it or to the surface it was applied to (without some rigorous removal and cleaning).
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Old 07-18-2018, 11:24 AM   #9
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Quote:
Originally Posted by Re-Pete View Post
When folks write about Vulkem are the referring to Vulkem 116?

Is the gray Vulkem the right product for sealing the gray belly pan aluminum to the plastic Banana wrap?

Exactly when is the right use for Vulkem?
Thanks.
That is what I use for around the windows and door. I use Sikaflex 221 for most other applications.
https://www.homedepot.com/p/Tremco-1...3006/202267308
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Old 07-18-2018, 12:09 PM   #10
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That is what I use for around the windows and door. I use Sikaflex 221 for most other applications.
https://www.homedepot.com/p/Tremco-1...3006/202267308
This is a link to the data sheet for Tremco Vulkem 116.
Notice that its recommended uses are based on concrete and masonry, not metal. I agree that it will work, but have also wondered why metals are not specifically noted on the data sheet.

https://www.tremcosealants.com/files...kem_116_DS.pdf
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Old 07-19-2018, 06:51 AM   #11
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Originally Posted by A W Warn View Post
This is a link to the data sheet for Tremco Vulkem 116.
Notice that its recommended uses are based on concrete and masonry, not metal. I agree that it will work, but have also wondered why metals are not specifically noted on the data sheet.

https://www.tremcosealants.com/files...kem_116_DS.pdf
I purchased mine from an Air Stream specialist. That is what they use and recommend. I've used it and it works well to date.
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Old 07-19-2018, 07:06 AM   #12
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Originally Posted by A W Warn View Post
Adseal is silicone. I would not use that anywhere on my trailer, even though Airstream has started using it. When maintenance is needed, no caulking will stick to it or to the surface it was applied to (without some rigorous removal and cleaning).
So would that be an improvement or cost saving change?
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Old 07-19-2018, 09:06 PM   #13
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So would that be an improvement or cost saving change?
An executive decision, so it may be neither.
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