Windscreen Leak - suitable repair?
Discussion
Resealing the windscreen.
Got a leak through the windscreen frame just above the driver (of course). Plus the rubber trim is loose.
Need to reseal. Screen seems properly bonded despite the small leak.
Was thinking of lifting the rubber seal. Cleaning up and then filling with black RTV and resetting the rubber seal.
Suitable fix?
Got a leak through the windscreen frame just above the driver (of course). Plus the rubber trim is loose.
Need to reseal. Screen seems properly bonded despite the small leak.
Was thinking of lifting the rubber seal. Cleaning up and then filling with black RTV and resetting the rubber seal.
Suitable fix?
mk1fan said:
Was thinking of lifting the rubber seal. Cleaning up and then filling with black RTV and resetting the rubber seal.
Suitable fix?
Just a word of caution on this, from some points I have just learned from recently having a windscreen fitted to car I am trying to build. The fitter was very reluctant to fit it before it was sprayed but I needed it done to get it through the IVA test first.Suitable fix?
He fitted it but said it was at my risk as if the sprayers lifted the seal there was a possibility it would pull away from the silicone and it would be impossible to ever get it back into position. He also said if I went down that root only lift it for a short time as rubber has a memory so again if left for to long the rubber would possibly not go back into a smooth position.
The latter probably won't effect you if just trying a quick seal but the former might be worth bearing in mind.
Regards
Nick
Actually from years gone by maybe the old TVR mailing list, I seem to recall that people used to use "Seek and seal", this one was recommended on PH in 2008. Worth a try for £7.
https://www.amazon.co.uk/Captain-Tolleys-Creeping-...
https://www.amazon.co.uk/Captain-Tolleys-Creeping-...
Rockettvr said:
Been using a product called CT1 at work recently - its basically a silicone mastic but can be used as a glue/adhesive as well. Its bloody fantastic. Comes in clear black or white
Sticks like s
t to a blanket and totally waterproof. Doesn't stink like normal mastic 
Sticks wet stuff as well, use that a lot on some of the roof mounted kit at work. Obviously dry surface is better but it is superb.Sticks like s
t to a blanket and totally waterproof. Doesn't stink like normal mastic I seem to have caused some confusion here.
Perhaps calling the rubber bit a seal was incorrect. It is purely a decorative trim item. It is a T profile peice of rubber that DOES NOT provide any sealing to the windscreen.
The screem is definitely bonded in place and there is a small break / gap that lets in water. Again, this is definitely the cause of theleak.
RTV it is then as I have a tube. The other glues look interesting though. The CT1 range looks good for work.
Perhaps calling the rubber bit a seal was incorrect. It is purely a decorative trim item. It is a T profile peice of rubber that DOES NOT provide any sealing to the windscreen.
The screem is definitely bonded in place and there is a small break / gap that lets in water. Again, this is definitely the cause of theleak.
RTV it is then as I have a tube. The other glues look interesting though. The CT1 range looks good for work.
Remove trim (if it hasn't come out already) and mask up both the body and glass edges. Apply three or four layers of masking.
With a sharp bladed utility knife (like a Stanley or Irwin) trim away any black adhesive you can see in the groove. It doesn't have to be perfect, and you don't need to get rid of it all; just make a tidy recess by cutting it away with the knife.
Clean the rubber T-trim with a degreasing agent and remove any bits of adhesive which might still be on it. Also degrease the channel you've just carved out.
Offer the trim to the channel and check for size and fit. Trim/mitre if needed.
Using an appropriate automotive grade polyurethane [glass] adhesive, extrude a thin 'sausage' into the channel. Be careful not to go too heavy with it; you need just enough for the vertical part of the 'T' to bed in (check that the bead is covering the gap you mentioned).
Carefully wipe away any excess with panel wipe or an appropriate polyurethane remover. Remove masking, and tape the trim down (with masking tape) for a couple of hours (the car should ideally be in a cool, shaded area).
When removing the tape, be sure not to lift it away from the body. Once you get a purchase on the tape end, keep it flat to the body and peel it along the same line it is stuck on (if that makes sense?).
Give me a call if you need help. Happy to talk you through it.
07974 216953
Best of luck
With a sharp bladed utility knife (like a Stanley or Irwin) trim away any black adhesive you can see in the groove. It doesn't have to be perfect, and you don't need to get rid of it all; just make a tidy recess by cutting it away with the knife.
Clean the rubber T-trim with a degreasing agent and remove any bits of adhesive which might still be on it. Also degrease the channel you've just carved out.
Offer the trim to the channel and check for size and fit. Trim/mitre if needed.
Using an appropriate automotive grade polyurethane [glass] adhesive, extrude a thin 'sausage' into the channel. Be careful not to go too heavy with it; you need just enough for the vertical part of the 'T' to bed in (check that the bead is covering the gap you mentioned).
Carefully wipe away any excess with panel wipe or an appropriate polyurethane remover. Remove masking, and tape the trim down (with masking tape) for a couple of hours (the car should ideally be in a cool, shaded area).
When removing the tape, be sure not to lift it away from the body. Once you get a purchase on the tape end, keep it flat to the body and peel it along the same line it is stuck on (if that makes sense?).
Give me a call if you need help. Happy to talk you through it.
07974 216953
Best of luck
mk1fan said:
Other than the sealant products that is the process I envisaged doing. Cheers.
Need to speak to you about a couple of other screens anyway - not urgent, a few months off. Lewisham area. Do you venture to that compound of London?
Indeed. I also need to pop in and see Mr Zigazaga who's not too far from you. An insurance approved outfit repaired a chip on his windscreen and, well, if you've see his thread you'll know. Need to speak to you about a couple of other screens anyway - not urgent, a few months off. Lewisham area. Do you venture to that compound of London?
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