Leaking windscreen

Chris Cole · Post by **Chris Cole** » Mon Jun 01, 2009 7:20 am

My Javelin windscreen leaks around the rubber. Is there any sealant I can apply that will give a cure without removing the glass and using a new rubber? I have tried the clear creeping sealant, thanks to David Morris, but this did not work too well. Is 'Liquid Rubber' any good? Any other ideas?

Keith Andrews · Post by **Keith Andrews** » Mon Jun 01, 2009 9:23 pm

It may leak in 2 places between the rubber and steel or between rubber and glass
If have used not the right windscreen sealant stuff, the window has to be pulled crap cleaned out and put back in
A bead of sealant in the body grove and in the glass grove, then install the screen.
You can spend ages screwing around 'patching' trying to fix, or take a and hr out, pull the screen, and do it once do it right.

paul wilks · Post by **paul wilks** » Mon Jun 01, 2009 10:27 pm

Hi Keith. Is removal and replacement of Javelin windscreen really THAT easy? Just asking because mine has a slight leak but even the late Roy Braddock told me it's an awful job.

Paul

Tony Fearn · Post by **Tony Fearn** » Mon Jun 01, 2009 10:42 pm

Chris,

Keith is spot on. Make do and mend will not work.

As you know, I'm pre-war, but:-

There's many a Javelin Jowetteer that's removed and replaced the windscreen with new rubber, or so I've read over the years, so before you 'go-it-alone', and because 99.25% of the Jowett fraternity don't look at this site, it might be worth mentioning it in the Jowetteer, or even ringing round your Section.

You don't want to be doing it without help, as if I remember correctly it's not a 'walk in the park', and that two or three minds are better than one in this case. I'll bet the help is out there.

Regards,

Tony.

P.S. Just seen that Paul has beaten me to a reply, but what he says backs-up my comments.

Nevertheless it can be done. Nihil desperandum!!

Post by **Forumadmin** » Mon Jun 01, 2009 10:55 pm

If you were at Bideford you will have seen a devilish tool for inserting the rubber on the Southern Section stand and reproduced on JowettGallery; but that does not compare to the image of Angela Simmons with two bare feet splayed apart from inside the Javelin being encourage by Clive to push harder when trying to fit the windscreen.
A story recalled in response to that epic response from the Ladies on Saturday night; transcripts of which are available in a brown envelope....

Keith Andrews · Post by **Keith Andrews** » Tue Jun 02, 2009 1:08 am

R&R is not hard....thu if patched with silcone getting out may require a bit of effort to unstick /unglue
Putting in is easy, put the rubber on the glass, a bit of strong string/cord in the groove that takes body metal, slide the bottom in, then with constant pressure,on the outside not heaps, pull the string ends from the inside, that 'flick' the rubber edges over the lip, as it pulls out.
The ends of the rubber, If it is not a 'endless rubber, 'weld' together with urathane compound.
If the rubber also has an insert, the tool to put this in is only a couple dollars.

And a side note NEVER, never use silicone sealant on body metal, it causes long term corrosion.

Colin Holding · Post by **Colin Holding** » Mon Jun 29, 2009 12:55 pm

Fitting a Javelin windscreen is not for the feint hearted. You have to 'bend' the screen to get it past the window pillars when putting it in. You can remove the screen easily enough by cutting off the existing rubber but you can't do this to put it back (obviously). You will also need at least two people. It is approx. two years ago when I replaced mine approximately 2-3 years ago.

rob needs · Post by **rob needs** » Mon Jun 29, 2009 8:46 pm

I had a bloke help me with mine who does it for a living,i never saw a mans hands shake so much.When i told him we had to bend it in he shook even more.I used a couple of scrapers to help get it in,sliding the scrapers between the glass and the frame,one on each side.

paul wilks · Post by **paul wilks** » Tue Jun 30, 2009 8:06 pm

As I suspected! Which is why Roy Braddock was so wary of removing and replacing Javelin windscreens. I have heard of one unfortunate member who bought a scrap Javelin just for the windscreen and broke it as he was putting it in! Would 'Dum Dum' be any good for this job? I have used a 'creeping sealant' in the past with good results but I see Chris has had less success.

Perhaps you could pay for Keithâ€™s air fare so he could do it for you?

Post by **Forumadmin** » Tue Jun 30, 2009 8:33 pm

Try Clive and Angela Simmons, I am sure they would lik to re-live the moment!

Colin Holding · Post by **Colin Holding** » Tue Jun 30, 2009 9:43 pm

I used 'Bodyline' screen sealant for both the glass to rubber and rubber to body. It is a Unipart product and available from your local body shop/paint suppliers (Autopaint in my case). I seem to recall that the Jowett manual recommends using a mastic sealant when fitting the windscreen and the Bodyline sealant is a mastic type sealant (very messy).

Bryan Walker · Post by **Bryan Walker** » Wed Jul 01, 2009 11:37 am

I think- when I put my javelin back together (15 years ago) I did the wind screen from inside the car but then I still hadn't put the wooden dash in at that stage.

Tony Fearn · Post by **Tony Fearn** » Mon Jul 06, 2009 1:14 am

Chris,

I've used a product called Sikaflex recently on 'Mary Ellen'.

Having welded in some repair panels to the leading edges of both front wings I had to 'wire' the edges.

I sealed all the wired edges, old and new with Sikaflex.

Its very sticky stuff and you'll need latex gloves on because it's rather (very very) difficult to remove from the places you don't want it to be, but it might be worth a try if you want an alternative to Colin's suggestion, and you don't want to remove the screen.

Perhaps masking tape on both sides of the area you'll be sealing, leaving a bead's width for the Sikaflex wouldn't go amiss

Tony.

Tony Fearn · Post by **Tony Fearn** » Mon Jul 06, 2009 7:45 pm

One of many entries on a Google search produced this information on Sikaflex:-

http://www.glueline.co.uk/catalog/downl ... 1-etds.pdf

Hope it's of interest.

Tony.

Keith Andrews · Post by **Keith Andrews** » Mon Jul 06, 2009 9:32 pm

Suitable substrate materials are
timber, metals, metal primers and
paint coatings (two-part systems),
ceramic materials and plastics

Rubber is not included...
If patching, best bet would be bathroom silicone sealant...but do not use on exposed metal or corrosion will occur ...or windscreen urethane...

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