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[GMCnet] weatherstripping [message #353795]

Tue, 14 April 2020 18:09

Len Novak

Messages: 676
Registered: February 2004
Location: Las Vegas, NV

Karma: -3

Senior Member

The window in the door leaks. Removed the window and the culprit seems to
be the black foam weather stripping the outlines the window. Other that it
being weather stripping is there anything special about this stuff? It
appears to be 5/8 by ¼ although it is has been compressed somewhat.

Thanks,

Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Fallbrook, CA new email: B52Rule@Roadrunner.Com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375

www.bdub.net/novak/

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Len and Pat Novak 1978 GMC Kingsley The Beast II with dash lights that work and labels you can see! Las Vegas, NV new email: B52sRule@Gmail.com http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375 www.bdub.net/novak/

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Re: [GMCnet] weatherstripping [message #353796 is a reply to message #353795]

Tue, 14 April 2020 18:33

powwerjon

Messages: 849
Registered: March 2013

Karma: -2

Senior Member

Len,
The best is a butyl rubber tape which is a sticky rubber sealant material,
You can get it at most RV suppliers and shop or Jim B and Jim K also have
it. Typically supplied with new windows. Once that you put it on and
tighten the window it will squeeze and you can then trim it and clean up
with paint thinner.

J.R. Wright
GMC Great Laker
GMCGL Tech Editor
GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 29.5' Stretch
75 Avion (Under going Frame up Restoration)

On Tue, Apr 14, 2020 at 4:09 PM Len Novak via Gmclist <
gmclist@list.gmcnet.org> wrote:

> The window in the door leaks. Removed the window and the culprit seems to
> be the black foam weather stripping the outlines the window. Other that
> it
> being weather stripping is there anything special about this stuff? It
> appears to be 5/8 by ¼ although it is has been compressed somewhat.
>
> Thanks,
>
>
>
> Len and Pat Novak
> 1978 GMC Kingsley
> The Beast II with dash lights that work and labels you can see!
> Fallbrook, CA new email: B52Rule@Roadrunner.Com
> http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
>
> www.bdub.net/novak/
>
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Re: [GMCnet] weatherstripping [message #353797 is a reply to message #353795]

Tue, 14 April 2020 18:53

Bullitthead

Messages: 1411
Registered: November 2013

Karma: 5

Senior Member

I'm sure it's closed cell foam. Probably made from what is now unobtainium. There are modern substitutes in True Value and elsewhere, but they won't last 40 years. Definitely don't replace it with any of the so-called enviro-friendly soy based foam. Use the stuff that feels like a Tempur-pedic mattress or those seats in the space vehicles.

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.

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Re: [GMCnet] weatherstripping [message #353802 is a reply to message #353795]

Tue, 14 April 2020 19:49

Richard RV

Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...

Karma: -17

Senior Member

Len Novak wrote on Tue, 14 April 2020 16:09

The window in the door leaks. Removed the window and the culprit seems to be the black foam weather stripping the outlines the window. Other that it being weather stripping is there anything special about this stuff? It appears to be 5/8 by ¼ although it is has been compressed somewhat.

Len,

If you're talking about the seal between the lip of the window frame and the aluminum sidewall, than the butyl tape Jon mentioned is the way to go.

https://www.amazon.com/Black-Butyl-Tape-Mobile-Single/dp/B07BJLY4HZ

Unroll the tape and stick it to the backside of the window frame lip, remove the coated paper release tape and push the window into place. Helps to have dry fit the window first and marked with pencil so the window is centered in the door cutout. Reinstall the inner aluminum retaining strips and screw them down snug. The butyl will creep and more will squeeze out, so periodically tighten the screws a little until things look uniform and there's no more squeeze out. It's best to do installation on a hotter day as the butyl squeezes out better. Excess butyl can be removed with a plastic body putty spreader and cleaned up with mineral spirits. Jon said he uses paint thinner - he's got a better paint job than mine. Rolling Eyes

You could use caulk, but I feel the butyl tape is more forgiving and cleaner.

Richard

'77 Birchaven TZE...777; '76 Palm Beach under construction; ‘76 Edgemont waiting its turn

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Re: [GMCnet] weatherstripping [message #353804 is a reply to message #353795]

Tue, 14 April 2020 21:12

RF_Burns

Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada

Karma: 3

Senior Member

I just did one window tonight with round black butyl tape and one last week.

I used 1/4" round butyl tape that had a foam core on the first window. On my aftermarket windows it seemed a little small. So this time I went with full butyl 3/8" diameter, which is a tad on the thick side. On my windows there is a large recess to fill or seal. The stuff I used is typically used on windshields.

What was on these windows was a 1/8" foam with sticky back against the windows. But only a thin strip about 1/16" wide was actually pressed against the coach body.

Most the flat butyl tape I have found is white in colour and seems to dry out vs this black round stuff seems to stay sticky for years.

Made by 3M 08620 is 1/4" diameter and 08622 is 3/8" diameter. Its available though auto parts stores.

Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

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Re: [GMCnet] weatherstripping [message #353807 is a reply to message #353804]

Wed, 15 April 2020 00:14

Len Novak

Messages: 676
Registered: February 2004
Location: Las Vegas, NV

Karma: -3

Senior Member

Butyl rubber calk? Just a thought.

Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Fallbrook, CA new email: B52Rule@Roadrunner.Com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375

www.bdub.net/novak/

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Bruce
Hislop via Gmclist
Sent: Tuesday, April 14, 2020 7:12 PM
To: gmclist@list.gmcnet.org
Cc: Bruce Hislop
Subject: Re: [GMCnet] weatherstripping

I just did one window tonight with round black butyl tape and one last week.

I used 1/4" round butyl tape that had a foam core on the first window. On my
aftermarket windows it seemed a little small. So this time I went with
full butyl 3/8" diameter, which is a tad on the thick side. On my windows
there is a large recess to fill or seal. The stuff I used is typically
used on windshields.

What was on these windows was a 1/8" foam with sticky back against the
windows. But only a thin strip about 1/16" wide was actually pressed against
the coach body.

Most the flat butyl tape I have found is white in colour and seems to dry
out vs this black round stuff seems to stay sticky for years.

Made by 3M 08620 is 1/4" diameter and 08622 is 3/8" diameter. Its available
though auto parts stores.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

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Re: [GMCnet] weatherstripping [message #353811 is a reply to message #353807]

Wed, 15 April 2020 09:23

Bullitthead

Messages: 1411
Registered: November 2013

Karma: 5

Senior Member

Gotta agree with the others, the butyl is the best, (although not easily removable), forget the foam, DKWIWThinking. Careful application will give you a clean, practically submarine-tight seal against the body. Be sure to clean the sealing surfaces thoroughly with something that leaves no residue.

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.

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Re: [GMCnet] weatherstripping [message #353812 is a reply to message #353811]

Wed, 15 April 2020 10:00

James Hupy

Messages: 6806
Registered: May 2010

Karma: -62

Senior Member

One tip that I use when sealing windows, is to outline the painted area
that surrounds the window with frog tape for painting. It seals the edges
and does not allow any creep under like regular masking tape does. Be
fastidious in your application of it, (I prefer the 2" wide stuff) and keep
the spacing uniform distance from the edge of the rubber moulding. Then,
stand back and eyeball your tape job. If it pleases you, then proceed with
mounting the window. I use suction cups with grab handles both inside and
outside. Get a helper. Pick a day over 70° Farenheit, or work indoors in a
heated space. The glass shops use a heat activated butyl material in
caulking cartridges. The glass guys I know have a heating cabinet that
resembles a multi barrel anti-aircraft rocket launcher. The butyl material
goes in the barrels and is kept at the correct temperature. Work quickly,
you don't have all day with this stuff. As soon as you are completed, pull
the frog tape off. Pull it back over itself, and pully steadily and not too
quickly. It will leave you a beautiful parting line that will level or self
feather out. Then, walk away, and leave it alone until it cures. You won't
be sorry. Be absolutely sure before you start to mount the windows, THAT
EVERY LAST TRACE OF THE PREVIOUS SEALANT IS REMOVED, and that the surface
is squeaky clean.
Jim Hupy
Salem, Oregon

On Wed, Apr 15, 2020, 7:24 AM Terry via Gmclist
wrote:

> Gotta agree with the others, the butyl is the best, (although not easily
> removable), forget the foam, DKWIWThinking. Careful application will give
> you
> a clean, practically submarine-tight seal against the body. Be sure to
> clean the sealing surfaces thoroughly with something that leaves no
> residue.
> --
> Terry Kelpien
>
> ASE Master Technician
>
> 73 Glacier 260
>
> Smithfield, Va.
>
>
> _______________________________________________
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> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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