Screen Trim: Do you put Dum Dum here ?

[eisdielenbiker]

Hi,
i am in the process of winterproofing my Coupe. Besides the wiper getting stuck in the cold (Below 10 Celsius the linkage tube fails due to stiffening grease, motor is overhauled) i will have to seal the screens perfectly. The problem comes with the original rear screen rubber. I have sealed it with another brand good sealing stuff between glass and rubber and between rubber and trim. What remains is the gap between trim and panel:


This one is rather large. Rust is not visible from parcel shelf. The screen clip has rotten loose i guess. Meanwhile I have flooded it with rust inhibiting Owatrol(linen seed oil based) already. I guess the best I can do at the moment is to close this and all ather much smaller gaps with Dum Dum. Have you done this too ? Or shall i leave the gap open to provide air circulation ? Any other recomendations (Besides changing screen and rubber)?
Regards
Mark

[stantondavies]

I wouldn't use dum-dum which is more for sound deadening. The answer is to reset the trim of which I have no experience. I'm sure Phil will have some good advice.

[Deleted]

while i'm sure the last respondent knows a lot more than i do, i sealed all the areas between trim and body with dum dum, and it's worked really well. trim on these cars ive found is a problem to have reset properly.

[johnwp5bcoupe]

Dum Dum is fine for what you want to do it is used in lots of places when fitting the screen just make sure you have a good seal between the glass and the rubber with a standard screen sealer as there is a capillary action if this is not done well but looking at the trim section I would say it's not seated correctly as you can see the clip

Somebody will say use silicone I would say leave it in the shop

[Phil Nottingham]

I would try to fit a new clip but either way there SHOULD be sealant in there and DumDum is the stuff Rover used

[eisdielenbiker]

For the glass to rubber area i have used a standard screen sealer. Dum dum would not be appropriate up to todays technology. But you cannot get into these gaps between two hard materials with the sealer gun. Possibly I will try to reseat the small trim piece next year when any paint work will dry better. Will I have to remove D-Post trim first? Any other obstacles around ? The little connecting cover piece at the left of the picture had already been loose earlier this year. I could luckily fix this with a little bending.
Mark

[johnwp5bcoupe]

Mark you will have to remove the D post trim there is a screw in the corner remove the trim to replace the clip under the offending trim, this piece is one of the worst to get correct as there is a clamp between it and the large trim under the SS cover piece and it tends to twist the corner piece so you need good clips

[eisdielenbiker]

John, this really sounds like a work i will tackle next summer at earliest... The screen clip is definitely broken by rust. But the trim piece feels well fixed anyway by other means. Besides that gap.

Btw. I never use silicone sealer on a cars body structure. It promotes rust by producing/using acid (vine gar smell). High quality sealer may be an exemption to this. At its expense you can buy good PU or other sealer as well. Specialized silicone sealer is sensible for heat exposed places at the engine etc.

[enigmas]

Perhaps I'm not seeing things clearly but the trim doesn't look to be held down at this point. When fitting the windscreen clips a small spacer or washer (about 1mm thick is placed under the clip so that the trim fits securely (clicks down) onto the trim clip. If the washer is omitted the trim will lift off as it can't clamp onto the edges of the trim clip adequately.

[johnwp5bcoupe]

Yes you are correct Vince the clip is broken/rusted and as Mark says best left till the sun shines

To get the D post trim off Mark it's a case or removing the rear seat back then the roof trim panel then a nut and washer through a hole there is also a trim clip not a hard job just a bit fiddly