Proven Windshield sealant

[PeterH-350LE]

Originally Posted by bkahler

Not yet. With my Argosy being stored and worked on inside it has not been a pressing issue to apply the Vulkem.

However I did have Ernie seal Peanut's windshield with Vulkem and it appears to have stopped the leaks coming from that area. I had him pry the gasket away from the glass and aluminum and the sealant was applied in the gap and then the gasket was laid back into place. The excess was then wiped up. He did use masking tape around the edges to help contain the mess.

Since the sealant was applied I haven't noticed any leaks coming from the windshield.

Brad

That's good news. The most important thing, in my opinion, is having a clean/dust free surface. Dust tends to collect under the gaskets. I used compressed air and a damp rag with lacquer thinner to remove any oily residue.

[bkahler]

Originally Posted by PeterH-Airstreamer

That's good news. The most important thing, in my opinion, is having a clean/dust free surface. Dust tends to collect under the gaskets. I used compressed air and a damp rag with lacquer thinner to remove any oily residue.

I know Ernie didn't use compressed air but he did clean with lacquer thinner. I know Peanut's windshields leaked for a long time because the cockpit floors were mostly pulp

[Boom Sounds]

https://gbr.sika.com/dms/getdocument..._uk_v01-08.pdf

[PeterH-350LE]

Originally Posted by Boom Sounds

https://gbr.sika.com/dms/getdocument..._uk_v01-08.pdf

I checked again, but it seems the Move-it has been replaced with a new product and is no longer available in the US:
Sikaflex® P2G PLUS

https://usa.sika.com/en/group/News/2...-Launches.html


I found it on Amazon
https://www.amazon.com/Urethane-Adhe...C2%AE+P2G+PLUS

[bkahler]

Originally Posted by PeterH-Airstreamer

I checked again, but it seems the Move-it has been replaced with a new product and is no longer available in the US:
Sikaflex® P2G PLUS

https://usa.sika.com/en/group/News/2...-Launches.html


I found it on Amazon
https://www.amazon.com/Urethane-Adhe...C2%AE+P2G+PLUS

So is this what's being recommended now for sealing windshields?

[PeterH-350LE]

Originally Posted by bkahler

So is this what's being recommended now for sealing windshields?

Seems like it, problem is that I saw the Move-it stuff perform for 11 years plus, but have no experience with this new line.

[bkahler]

Originally Posted by PeterH-Airstreamer

Seems like it, problem is that I saw the Move-it stuff perform for 11 years plus, but have no experience with this new line.

I hate to say it but this new stuff sounds like the stuff we tried after the Move-it disappeared. It lasted about a year and then pealed right off. I think I'll stick with the black Vulkem that you sent me.

[PeterH-350LE]

Originally Posted by bkahler

I hate to say it but this new stuff sounds like the stuff we tried after the Move-it disappeared. It lasted about a year and then pealed right off. I think I'll stick with the black Vulkem that you sent me.

I tend to agree, Brad. Vulkem is a proven sealant/adhesive, will stick to just about everything, except the clear coat they put on replacement panels.
Well, lets say it sticks just fine and seals, but does not have the same adhesive properties you get when applying vulkem to unsealed aluminum.
If the clear coat is lightly scuffed with sandpaper or steelwool, it will stick like thunder.
Due to the nature of my business (dealing with coatings and a large variety of surfaces), I am a test sample freak. I am often shocked and amazed what you find out after something is in service for a year or more.

[martin300662]

I found an review of the P2G that indicated you really had to thoroughly clean and then use the primer (comes in a container with a swab attached to the inner side of the lid) to stand any chance of it adhering to the seal side as it is actually designed to stick the glass to bodywork not seal to body work.

[Boom Sounds]

This is the product which is available on the UK market which seems to be for buses/trucks etc and bonds and seals.

SikaTack®-MOVE Transportation
https://www.sika.com/en/solutions_pr...portation.html

Glass replacement adhesive for buses, coaches, trains and special vehicles.

SikaTack® MOVE Transportation is suitable for direct glazing and gap filling applications in one work-step in the Bus, Truck and Rail glass replacement business.

CHARACTERISTICS AND ADVANTAGES
Black-primerless
One-component polyurethane
Cold applied
Shortest Safe Drive-Away Time
Suitable for bonding and gap filling
Excellent application and non-sag properties
Optimal open time for large and heavy windscreens
Good UV- and chemical resistant
Prevents contact corrosion in aluminium bodied vehicles
Solvent-free
COLOUR
Black
PACKAGING

[bkahler]

We used Vulkem 116 in black on Peanut. So far the leaks appear to have been stopped. If it holds up through this winter then I don't think I'll worry to much about it after that.

Definitely no fun doing the job twice!

Brad

[Boom Sounds]

Originally Posted by bkahler

We used Vulkem 116 in black on Peanut. So far the leaks appear to have been stopped. If it holds up through this winter then I don't think I'll worry to much about it after that.

Definitely no fun doing the job twice!

Brad

Brad - can you use this stuff as a sealant around any potential weak spots?

[bkahler]

Originally Posted by Boom Sounds

Brad - can you use this stuff as a sealant around any potential weak spots?

When I'm assembling things that could potentially be the cause of leaks the sealant I use the most is Tempro 635. It's not grainy and gritty like Vulkem 116.

When Airstream was building these things the they liberally applied the sealant and that's pretty much what I do.

[PeterH-350LE]

Originally Posted by bkahler

When I'm assembling things that could potentially be the cause of leaks the sealant I use the most is Tempro 635. It's not grainy and gritty like Vulkem 116.

When Airstream was building these things the they liberally applied the sealant and that's pretty much what I do.

I like the tempro 635 for sealing around the aluminum windows for the reasons Brad mentioned. But I have only seen it in Gray, the vulkem 616 comes in a variety of colors, incl gray, black and aluminum

[bkahler]

Originally Posted by PeterH-Airstreamer

I like the tempro 635 for sealing around the aluminum windows for the reasons Brad mentioned. But I have only seen it in Gray, the vulkem 616 comes in a variety of colors, incl gray, black and aluminum

Vintage Trailer Supply lists it in white and gray. I've used nothing but gray myself.

[WayneG]

Whatever you use, watch out for streaking on the glass.
I used butyl tape as a emergency leak repair one time and when the rain hit it, I had black streaks all the way down the glass and it was very hard to remove. I used the 3M 08693 urethane sealer last time and no more streaks.

[mattpalmeris]

I recently picked this up from Amazon but have yet to try it out but I think it has many of the same properties the old stika product had. My motohome is plagued by front windshield leaks and the PO has smeared black silicone all over the top weatherstrip. My plan is to remove the lock strip and run a bead of the 3m glazing compound between the body and weatherstrip all the way around.

Question on other peoples rigs, do you have a bead of urethane or other sealant along the top of the windshield or do you just let the rubber do its job?

https://www.amazon.ca/3M-08509-Beddi.../dp/B000PF13JW

[cole3444]

Will this 3m compound react with the aluminum body, read horror stories on the Forum about different chalking reacting with aluminum causing pitting and corrosion. I need something to seal my windshield also. Let us know how it works.

[Boom Sounds]

The Sika product I posted specifically says it avoids contact corrosion in aluminium bodied vehicles