View Full Version : Joint seal

05-27-2008, 05:36 PM
Hi All,

I have a question about how to seal the joint between the back of the cowling and the body panel below the front windshield? There is what appears to be some kind of joint filler in there, but it's dried up and allowing moisture to leak into the truck (noticed it in the glovebox and passenger floor board).



05-27-2008, 06:04 PM
I've heard of people using 3m drip check successfully for that seam but I have not used it myself.

05-27-2008, 06:30 PM
seam sealer...available at napa warehouse

05-27-2008, 07:12 PM
Should I remove the old material first or just apply over it?

05-27-2008, 08:45 PM
Prev.owner of my truck had filled the whole thing with caulk and painted over it.

05-27-2008, 11:37 PM
3M seam sealer. To answer your question directly, remove all traces of the original seam sealer and apply to clean painted metal or bare clean metal. It's all in the prep.

05-28-2008, 12:14 AM
What would be the cons to just welding it?

05-28-2008, 12:46 AM
What would be the cons to just welding it?

For starters, never being able to fold down the windshield as Mr. Toyoda intended.

05-28-2008, 08:22 AM
Like he said. Plus welding sheet metal is not for the faint hearted and still requires filler in most cases.

05-28-2008, 08:41 AM
For starters, never being able to fold down the windshield as Mr. Toyoda intended.

that shouldn't affect the windshield folding, it's well below where the w/s folds:confused:

but as mentioned, welding sheetmetal is not easy....burn through, warping among are the most common problems

05-28-2008, 10:19 AM
I'm thinkinht ejo might all for dremel tool with a sandng disk attachment. Does anyone have a better idea?

05-28-2008, 10:38 AM
Angle grinder with soft wire wheel, or scotch brite wheel- do you care about the surrounding paint?

05-28-2008, 06:03 PM
Actually I've got the exact same issue on my 1978 FJ45. I don't want to dork up the paint but I need the loose remnants of the 30 year old seam sealer out of there, plus I need to get rid of the rust where chunks have already fallen out.

They make these miniature wirewheels for Dremels, and that's one of the things I was thinking about for the rust/clean-out part of it. And to pry up loose chunks of old seam sealer without putting divots in the sheet metal, I was thinking of some sort of pointed wooden tool, maybe fashion something?

Then squirt new seal sealer in there (I have a tube ready to go), then mask it off and paint with rattle can that doesn't quite match. Too many projects!