Vannin' Home Forums Chevy How to.... 95 Vandura Leaking Side Windows

The big side windows have a pretty bad leak. Water just goes behind the window and into the van like there is no seal there. Does this on all 3 windows, i temporarily sealed it with some silicon but it isnt attractive. How would i go about fixing this?

Get a tube of this .... https://www.flexsealproducts.com/product/flex-shot/

Use a wooden butter knife to tip the seal out & lay a bead of this behind the seal. You may want to get the clear type. This stuff is great against water.

Or go an take out all the windows, get new seals.

That Flexseal stuff seals great, but I'd pass on it. A friend of mine used it to seal a couple of leak spots in the roof gutters of his car and it worked great, but when the time came for him to paint the car, you couldn't remove it. It was attached down in the gutter so well that we had a heck of a time getting it back off even with chisels. It ended up being a nasty mess and more trouble than it was worth.

So if you are never planning on having to remove it, then go ahead.

Sealing the window exterior with silicone is a temporary solution, and not a very good one.

To get anything bonded again to where the silicone once bonded, will be difficult requiring strong solvents and elbow grease.

The fix is to remove window and clean area, treat the inevitable rust, and use new seals and compress them evenly. Then on exterior fill in gaps with a non silicone paintable caulk.

it is also possible the sliding window tracks are clogged so any rain that drips in the slider window floods over and spills inward.

It is also possible that the person who installed the windows penetrated this rain channel with the screws, so that it leaks past the screws.