I'm working on a 53' Chevy 2100 4-dr. I replaced the windshield a year or so ago with a new gasket and some butyl rubber cord along the outside edge of the steel lip (nothing on the glass) and it's held up well. My only reservation is that before pulling the old gasket out, I noticed it had a lot of white-ish glazing compound around the outside between the rubber and the metal to fill the void. Some I imagine was done later to fix leaks, but this car has lots of stainless around the glass as well and there are pockets that will fill with water without something there. I've seen some information online about bedding and glazing compounds but they all look like caulk-able versions of the butyl rubber. What was on the car and what should I put on it? The car is black too. I don't plan to fill every void as some would be better left open so any moister can escape. I've also found what seems to be the same white glazing compound used in other places around the car for anti-vibration control around body fasteners, hinges, door panels, etc. My 54' Chevy 2100 had the same. It kinda looks like plain-Jane household window glazing, but is it? Similarly, I've seen tar used around the car to seal seams and for vibration control. Did they just use standard roofing tar? I'm hoping to put a new headliner in the 53' before too long but before I do I want to replace the tar-paper along the roof, which was also inside the deck lid and in parts of the doors. If it's just roofing tar, I'm thinking the traditional but messy approach of heating a pot and carefully spreading it over the paper, sticking it in place, and rolling it flat would do the job. I know there are more modern insulations and goops, but I kinda want to do the un-seen stuff as traditionally as possible.