[W126 Coupe] Water Leak update

[Josh Allen]

Vance Rowley wrote:

>  It looks like I have located the source of the water entering the car 

> and creating a paddling pool in the right hand side passenger footwell 

> (well, maybe 75-80% sure). It appears to be the outer seal of the rear 

> windshield (not the rear side windows). The top to be exact where the 

> roof meets the top of the windshield outer seal. I did have the rear 

> windshield replaced about 6 years ago because of the delamination 

> problem, but it has only recently been leaking (if indeed this is it 

> for sure). I have temporarily placed a piece of tape right across the 

> top of the rear windshield (bridging the gap or drain between the roof 

> and the outer seal) and no more paddling pool. And yes, there has been 

> some really heavy rain and wind since I put the tape in place for a 

> good test. I can't see any sign of rust in this area, but it is 

> difficult to see in this small gap. I was wondering if this can be 

> re-sealed without removing the rear windshield, as I would hate to 

> fork out for another new one if it were to break while being removed. 

> Especially as I am not yet 100% certain that this is the culprit. I 

> have been tempted to just run along this drain with some silicone 

> sealant, but would prefer to have a more professional job done. If 

> anyone has any ideas how to re-seal this properly or indeed if would 

> do no harm to just do a DIY job, it would be greatly appreciated.

>

> Thanks,

>

> Vance.

> 1991 560SEC Euro.

>


If you can find a good auto glass shop, I'd pay them to squirt a bead of 
the non-hardening glass sealant all the way around under the seal.  (I 
think it's a urethane sealant, rather than a silicone one, but I don't 
remember why that was).

That being said, if you can't find a good glass shop that's been doing 
this for a few years at least, you might be able to get some of the 
correct sealant yourself and do a reasonable job of it.


-Josh