Register now to get rid of these ads!

Technical help window and back glass leaking

Discussion in 'Traditional Hot Rods' started by 1953belair!, Jun 9, 2015.

  1. 1953belair!
    Joined: Aug 26, 2014
    Posts: 17

    1953belair!

    so I put my gl*** back in the car,i never done this before and everybody told me I didn't need to put any sealant and I noticed that both front and back gl*** leaks alil when it rains.i wont to get this fixed before I put the carpet in it.ive read a lot of post that talk about adding sealant after the gl*** is installed.will this work? its is a 1953 chevy 210 also has stainless trim around windows.a local gl*** company sold me a tube or 3m glazing
     
  2. mgtstumpy
    Joined: Jul 20, 2006
    Posts: 9,279

    mgtstumpy
    Member

    If my car I'd remove both screens & lay a bead of sealer in rubber before putting the gl*** in & another bead in the opening before reinstalling. Clean up the residual sealer & they won't leak or rust.
     
  3. 325w
    Joined: Feb 18, 2008
    Posts: 6,496

    325w
    ALLIANCE MEMBER

    Best to add a strip of rope chalking on the edge of the pinch weld. Then install the w/shield and rubber. When using the repop rubber you will need some sealer!
     
  4. slddnmatt
    Joined: Mar 30, 2006
    Posts: 3,685

    slddnmatt
    Member

    Most the time it's the corners that leak. You might be able to lift the corners and squeeze in some urethane
     
  5. 1953belair!
    Joined: Aug 26, 2014
    Posts: 17

    1953belair!

    if I only knew then what I know now I would have put the sealer on the rubber before putting the gl*** in
     
  6. 54fierro
    Joined: Jul 6, 2006
    Posts: 493

    54fierro
    Member
    from san diego

    It happens. I didn't use any sealer in mine but we don't get alot of rain.

    I had never installed gl*** before I did mine and just imagined I would make more of a mess if I tried to use some sealer. I do remember we used to sell "flowable" window sealer when I worked at the parts store. Maybe something like that would work for you. Worth a try, I cant imagine you have much space to put anything else in there since you are running the trim moulding
     
  7. olscrounger
    Joined: Feb 23, 2008
    Posts: 4,843

    olscrounger
    ALLIANCE MEMBER

    Years ago I had this issue-a gl*** shop sold me some sealer with a very small tip and it went between the rubber and the gl***-was clear and went in the groove-was on wife's 55 and we lived where it rained a lot--stopped all leakage. This car had the trim molding on as well-that was 25 yrs ago--still there
     
  8. Atwater Mike
    Joined: May 31, 2002
    Posts: 11,618

    Atwater Mike
    Member

    Bite the bullet. Carefully remove the chrome trim, take a plastic spatula (home improvement tool used for tub caulking, many different shapes) and lift the rubber for 3" at a time, 3m clear silicone is best.

    I use a squeeze bottle from my daughter's beauty supply house, it has 1 oz. capacity...is 3/4" dia. X 1" in length, has a variety of 'needles' with it...(for 'streaking' hair in fine streams...but also has larger dia)

    Wife and I are building small scale model airplanes, and use these for glue application...they can be washed out afterward...I used this bottle with silicone on my rubber around my '66 VW windshield, excellent results. Just a tiny bit, be careful not to use so much it 'oozes' back out when the rubber lays back down.

    Or...take a trip to your friendly gl*** shop. ($$$$)
     
  9. greybeard360
    Joined: Feb 28, 2008
    Posts: 2,098

    greybeard360
    Member

    You can get some "flowable" window sealer at the local auto supply. Cut a small opening in the tip and slide it in under the edge of the weatherstrip, squeeze the tube and work your way around the window. Do the top and sides.. bottom isn't critical.... water flows down hill. I have used this method on new installs and works great. If you put the sealer in the channel of the weatherstrip you will find yourself covered with RtV by the time you get the gl*** in :)
     
    Saxman likes this.
  10. 1953belair!
    Joined: Aug 26, 2014
    Posts: 17

    1953belair!

    ok thanks for all the ideas ill see if I can get this fixed up now
     
  11. geoford41
    Joined: Jul 26, 2011
    Posts: 766

    geoford41
    Member
    from Delaware

    I just ordered new gl*** for my 40coupe., The owner, Carson at Street Rod Gl*** CA suggested this for installation on the front windshield. "Use a 3M product for sealing, it Never hardens so you maintain the seal.' He did state "it's Messy" but first use the 3m product to seal the window to the inner seal groove, install both windshield gl*** with the gasket dry between the pinch weld seam and the gasket. After you have the window in place and the gasket against the body spray along gasket with window cleaner to prevent too much getting onto the paint, use the tube of 3m sealer and a fine tip along with a GOOD caulking gun slip the tip up under the rubber and the body/pinch weld and put a decent amount of sealer in there. He said it will ooz out but you can clean it up with mineral spirits/paint thinner (same)
    You may have to do this a few times (clean up) but that was his recommendations. I have not done this yet but having put a few windows in 40's it make sense and I don't feel like having a hand towel at the ready to dry the water as it comes in thru the window. In NJ it does rain and we do drive them in that stuff. Hope this helps this is information from a professional so I tend to listen when they speak
     
  12. pat59
    Joined: Sep 21, 2012
    Posts: 2,361

    pat59
    Member

    The front and back windows on my 51 fleetline were leaking bad. I cleaned up the windows and rubber. I then used masking tape and taped around the gl*** right next to the rubber and then tapes the rubber right next to the gl***. I used a 3-m product in a caulking gun and stuck it between the rubber and gl*** and squeezed a bead of the black sealant all the way around. Then I used my finger and alot of paper towels to wipe off the excess. and then I pulled the tape off carefully. then I did the same thing a couple days later on the body side.
    I have no more leaks.
     
  13. bedwards
    Joined: Mar 25, 2015
    Posts: 280

    bedwards
    Member

    The previous owner didn't seal my windows. I used 3m 8610 sealer all around the edge of mine by lifting the edge then extruding a fine bead between the seal and window. It was messy but cleans up with mineral spirits and has stopped my leaks so far.
     
  14. dadseh
    Joined: May 13, 2001
    Posts: 526

    dadseh
    Member

    Ounce of prevention.......
     
  15. sailingadventure
    Joined: Feb 11, 2007
    Posts: 283

    sailingadventure
    Member

    I have been installing auto gl*** for a living for over 30 years. NEVER USE SILICONE TO SEAL A GL***!!! only use a product made for sealing auto gl***. Silicone does not flow and will not seal a leak. Nothing will stick to silicone so trying to seal a gl*** after silicone has been used is nearly impossible.
     
  16. blazedogs
    Joined: Sep 22, 2014
    Posts: 549

    blazedogs
    Member

    Question A lot of rubber seals for installing gl*** on the directions say to use oil or water to help install the rubber seal making it easier. well if one is to use gl*** sealer when installing the rubber seal, the oil and sealer are not compatible ?
     
  17. 54FISH
    Joined: Jan 10, 2011
    Posts: 421

    54FISH
    Member

    I spoke with a couple gl*** installers who said they would install the gl*** but could not guarantee no leaks because the after market seals don't fit correctly . They told me it will look like factory but , if it is a daily driver they could not guarantee no leaks . I don't believe that . But....that's what I was told . I would think squeezing sealant in around seal after gl*** in would do the job
     
  18. jazz1
    Joined: Apr 30, 2011
    Posts: 1,602

    jazz1
    Member

    image.jpg I used permatex black rtv sealant to stop leak in my rear window. Leak was between gl*** and gasket. The permatex was all I had in the shop. Sometimes you get lucky and if it did not work it's easy to remove because it does not really bond2939052[/ATTACH]
     
  19. dave lewis
    Joined: Dec 12, 2006
    Posts: 1,381

    dave lewis
    Member
    from Nampa ID

    As said before "DO NOT USE SILICONE TO SEAL AUTO GL***"....
    every time I work on a car that someone has used silicone. ..there is rust where ever the silicone was..
    I believe it traps and holds water...
    Use urethane sealer..it sheds water. ..
    Messy..yes !
     
  20. Gman0046
    Joined: Jul 24, 2005
    Posts: 6,256

    Gman0046
    Member

    Reproduction gl*** in many cases is thinner then the OEM gl***. Makes it difficult to seal.

    Gary
     
  21. 54FISH
    Joined: Jan 10, 2011
    Posts: 421

    54FISH
    Member

    National Chevy ***ociation sells sealant for gl*** , not sure if silicone or not. , but comes in caulk tube .
     
  22. 1great40
    Joined: Jan 1, 2008
    Posts: 494

    1great40
    Member
    from Walpole MA

    I have been reading every thread about leaky gl*** and even started one myself. I just ordered a tube of 3M 08551 clear sealer. I'll report back on how it works. I had tried the "flowable"silicone and it turned yellow on short order and the majority of it peeled off when I started playing with it. Then I tried some other black caulking, no love. Fortunately that mostly peeled off too. According to the 3M data sheet, this stuff is an acrylic resin and not silicone based. Wish me luck.
     
    Last edited: Jun 27, 2015
  23. 325w
    Joined: Feb 18, 2008
    Posts: 6,496

    325w
    ALLIANCE MEMBER

    Friend uses 3m black strip chalking on the pinch weld. Factory used a white/ yellow stuff that didn't dry hard. Years ago in the factory we had a sealer labeled 621. It was a thin sealer that we used to seal door runners and gl*** leaks. Not seen any like it on the outside.
     
  24. 54FISH
    Joined: Jan 10, 2011
    Posts: 421

    54FISH
    Member

    Yes that is what was on my pinch weld when I removed my windshield / seal on my 54' bel air . It was still very pliable & yellow in color .
     
  25. HOTRODPRIMER
    Joined: Jan 3, 2003
    Posts: 64,735

    HOTRODPRIMER
    ALLIANCE MEMBER

    Who is this everybody that suggested you not need sealant?,they originally used something besides the rubber gaskets.

    Pull the gl*** and reinstall correctly,adding it now will look like a globed up mess. HRP
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.