PeterAllen Posted November 5, 2015 Posted November 5, 2015 I've bought a new windscreen and rubber seal (a no-trim 'cal' seal from Vintage Rubber) and I need to install them for rego. I also will need to remove it for a final painting so I don't want to use a sealant with the first install. My question is this - is the sealant only to make the installation waterproof on an S30, or are they prone to pop screens with body flex? Thanks Quote
Sirpent Posted November 5, 2015 Posted November 5, 2015 Peter The sealant that was used on old school cars like ours was Butyl gun sealant which was only there to provide a water barrier as the windscreen rubber could not totally seal the screen on the channel. These days you can purchase it on a role in tape form, the benefit being that it is dryer and not prone to run like the semi liquid form out of a calking tube. You will be able to place it with greater accuracy where needed. I would suggest that if you use the tape that once laid on the channel, and just prior to putting the screen in that you heat it with a heat gun or hair dryer to activate it and make it more plyable. Check out 5214 in the range. Cheers John http://www.bostik.com.au/industry-products-catalogue-0-all-brands-applications-421-butyl_tapes.html Quote
PeterAllen Posted November 5, 2015 Author Posted November 5, 2015 Thanks John. I've now read a bit on Butyl and I'm a bit anxious that it might be difficult to then remove the rubber without damaging it, once the Butyl has been applied. What I read suggest that while it remains flexible it does adhere well. Is that correct? I'm trying to avoid any damage to the rubber so I can reuse it after painting. Quote
Sirpent Posted November 5, 2015 Posted November 5, 2015 Peter It does, however if you heat the area when you wish to remove it the Butyl will soften somewhat and the screen will come away rubber intact. You will need a few people to help you remove the screen as the Butyl will spiderweb, usually a 3rd person uses a box cutter to cut the webbing so that you dont end up with it all over the car. Once the screen is out, remove all the Butyl using prep wash and have a hell of a lot of throw away cotton rags ready. Cheers John Quote
Gordo Posted November 5, 2015 Posted November 5, 2015 I would just fit the rubber and screen dry. With no sealant . Get the rwc. And take it out with no mess for the respray. Quote
red76z Posted November 5, 2015 Posted November 5, 2015 I have run my screen for 20 years now with no glue or lock strip chrome inserts. No problems. It has never had any leaks. Upon the final assembly on this build it has gone back in dry. Just make sure that your rubber is in good condition. Quote
Topstage Posted November 22, 2015 Posted November 22, 2015 Mine i use the base of the rubber for support, trim the ugly bulge and use silicone to make a nice flush seal Quote
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