[gordon]

I recommend to the House black semi-structural panel sealant, the sort of stuff they use to seal panel joints during repairs. Bodyline is the most common UK brand from Brown Brothers or wherever.


My Dodges originally used rubber strip to seal round the windscreen glass, side door glass, and rear window glass. Each of those locations are rot-traps because the rubber tends to admit and trap the water exactly where you don't want it.

Dodge windscreens tend to rot along the bottom edge INSIDE where the condensation has run down and collected. You have to cut this rot out and MIG it up, which leave a solid but imperfect channel to re-mount the glass.

Military side window frames with the full metal frames all round can be OK, but the versions used on the militarised civilian trucks (WC3x and WC4x half ton 4 x 2, for example) just used a single bottom runner which when new has a spring effect channel to clamp the glass in its rubber strip. Many of the ones I've seen (OK - all of them) have still been structurally solid, but with no spring left in the U channel area - forcing glass + strip into it just pushes the side of the channel apart.


The structural sealer covers both jobs, and many others. I can mount the windscreen glass in that sealer all the way round and it give a solid clean appearance that absolutely seals, and just filling the bottom channel of the side window frame and pushing the glass into it before it sets gives a solid watertight joint that will never move in ordinary use.

In both those applications, and many others, when it is set, it is rigid, but not so hard that you can't cut it out, shape it, or ease the glass out to refit it if you got the location wrong, plus it also works to glue rubber seals like windscreen outer seals to the appropriate areas, and mount panels.

I'll have to admit I've never used it as a gasket substitute though.