| Windshield header leak [message #247199] |
Sat, 12 April 2014 07:00  |
Rowlie
Messages: 55
Registered: April 2012
Location: Indianapolis
Karma: 0
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I've got a small leak at the head of my windshield, just above the mirror. It leaks regardless of whether we're moving or it's parked. I hoped it would go away when we replaced the windshields, but no luck.
What kind of sealant should I be using?
Eric Rowland
'76 Palm Beach
Indianapolis, Indiana
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| Re: Windshield header leak [message #247200 is a reply to message #247199] |
Sat, 12 April 2014 07:16  |
Joe Weir
Messages: 769
Registered: February 2013
Location: Columbia, SC
Karma: 7
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If the windsheild has been recently done, are you sure it isn't the clearance lights?
76 Birchaven - "Wicked Mistress" - New engine, trans, alum radiator, brakes, Sully airbags, fuel lines, seats, adult beverage center... those Coachmen guys were really thinking about us second hand owners by including that beverage center...
Columbia, SC.
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| Re: [GMCnet] Windshield header leak [message #247212 is a reply to message #247200] |
Sat, 12 April 2014 08:35 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Eric,
I would also suspect the clearance lights too. If the windshield has been replaced and sealed it should not be the source. Does the leak appear only when you use a hose and apply a weak stream of water to just the windshield gasket? Or does it appear when water is applied to the roof above the windshield? The lights are a common point of leakage. I would use any silicone sealant sparingly when trying to seal leaks. You may need to remove each running light and check the rubber gaskets on each light and then seal the hole under each light. I would suspect that the interior of the lights may be a little ruff and rusted and corroded if they have been there a long time. Don’t be surprised!
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On Apr 12, 2014, at 8:16 AM, Joe Weir <joeweir@gmail.com> wrote:
>
>
> If the windshield has been recently done, are you sure it isn't the clearance lights?
> --
> 76 Birchaven - New engine, trans, brakes, airbags, fuel lines, seats, upholstery, beverage center...
> Columbia, SC.
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: Windshield header leak [message #247246 is a reply to message #247199] |
Sat, 12 April 2014 14:12 |
Rowlie
Messages: 55
Registered: April 2012
Location: Indianapolis
Karma: 0
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I replaced all of the roof lights with new LED lights last year, suspecting the same thing. All of the new lights were also set in new gaskets, then silicone sealed when installed. Unfortunately, the leak persists.
Eric Rowland
'76 Palm Beach
Indianapolis, Indiana
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| Re: Windshield header leak [message #247294 is a reply to message #247199] |
Sat, 12 April 2014 20:44 |
Adrien G.
Messages: 474
Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
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Eric,
The roof cap is made of 3 molded parts, the center section and 2 side sections, the joint is about where you say the leak is coming in at, about center of sun visor.
When I had the WS out I noticed that the joint finish was not good above and at the gasket area, it could let water in (I didn't want to chance it), and used a dremel tool to clean the areas and filled with epoxy then filed, sanded, and painted. I have no leaks in those areas.
I know it may mean removing the WS again, but if nothing else works, its do it right or do it again and or live with it, your choice.
Just what I did.
| Rowlie wrote on Sat, 12 April 2014 07:00 |
I've got a small leak at the head of my windshield, just above the mirror. It leaks regardless of whether we're moving or it's parked. I hoped it would go away when we replaced the windshields, but no luck.
,
What kind of sealant should I be using?
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Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
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