Page 1 of 1

Mastic around window seals?

Posted: 15 May 2008, 11:10
by The_blue
Re doing my Panel conversion windows. Is it wise to mastic around the rubbers once fitted?

Posted: 15 May 2008, 16:05
by R0B
i would be using new rubbers if i was you.you wont be needing mastic then..

Posted: 15 May 2008, 21:05
by The_blue
I am ;)


But wanted to make sure.
I'm gona run a line down the inside

Posted: 15 May 2008, 21:09
by R0B
why would you be wanting to use mastic then..do you suffer from belt and braces syndrome... :)

Posted: 16 May 2008, 09:40
by The_blue
The new seals don't give me hope :)

The profile is the same both sides. the ones i've taken off were thin on the bodt work side and wider for the window frame.

I figure i can't hurt (much) to make sure :)

Posted: 16 May 2008, 11:54
by R0B
if your thinking of using silicon sealant.dont get any on your metalwork.as the acetic acid in it.will start eating your van...

Posted: 18 May 2008, 09:48
by PEET
Use the correct windscreen sealer, spray sopy water on the paintwork and seals before pushing the tube under the seal, seal up and scarpe off excess with a plastic spatula, dont even consider silicone sealant. And if you seal it up it also helps stop creating a watertrap for the rust to reappear... 8)

Posted: 19 May 2008, 06:06
by The_blue
Whats wrong with silicone :(

What product do you recomend?

Posted: 19 May 2008, 10:47
by sln123
I was advised to use window fitters Sikaflex on the notoriously leaky double glazed back screen on my Westy (after a large amount of the bottom lip and the inner skin of the back door had been welded up as a result of it leaking previously). Did the job on Saturday and it appears to have sealed perfectly. I think the stuff cost about £8 (it's black so matches the seal) but it's quite a messy job.

Posted: 19 May 2008, 11:31
by The_blue
Can i get this on the high street?

Posted: 19 May 2008, 13:42
by PEET
Silicone just doesn't seal as well for some reason, one reason being it turns hard too quick, u need a flexible sealant - believe me I have tried quite a few over the years. Go to a motor factors and ask for a tube of windscreen sealeant, mine was less than £3! The fact it's black also helps...

Posted: 19 May 2008, 19:11
by The_blue
I popped into motor mania near work and just got blanks looks :shock: .

I'll try a real car shop tomorrow.

Posted: 21 May 2008, 21:40
by noodle71
If the rubbers have a lace in the middle of them which they should do if its a panel van converted you should seal them body to rubber and glass to rubber.before you put the lace in. if there original or replacement vw seals they are self sealing rubbers so you wont have to seal. If you need sealant go into your local autoglass depot and buy or blag a tube of Arbomast sealer off them. :)