Renault Clio - Bodywork - Sun roof leak - 1994 Clio - Page 15 - Renault Forums :: Independent Renault forum

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post #71 of 80 (permalink) Old 1st January 2009
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I bought my son a 1998 Clio 1.2. Delighted with car - until it rained! Couldn't even unlock doors with remote and couldn't start it. First step was to get mobile again and removed receiver from
centre roof console. It was absolutely soaked. Dried it out with tissue and by putting it on hot room radiator for ten minutes. Before re-installing I put it in a small plastic bag and taped it up with insulation tape. We were mobile again but still had the awful leak. It's the only car I've driven that necessitated the use of an umbrella INSIDE the car when it was raining! Over a few months I cleaned all the moving parts without removal. As far as I can detect, there are no drain holes within the frame of the sunroof. The sunroof is a tilt and slide manual version. To give me time to find a solution I taped up the whole sunroof around the frame to body and frame to glass using 2" cloth tape (also called gaffer). Obtained from Screwfix for about £2.50. Didn't look very pretty but gave us the chance to dry the car interior out! It's not the roof aerial on our car as we've had no leaks since using the sealing tape method. Have just removed tape and applied a black roof and gutter sealant (B&Q £3.50) between the frame outer edge and roof panel. I used a plastic spatula to lift the frame slightly as I injected the mastic all the way round before smoothing out with a finger and cleaning up with white spirit. I had contemplated using a black silicone but found that it doesn't stick to painted surfaces very well. Left the tape on the glass to frame so at least we can pinpoint the source of the leak. I am surprised how thin and flexible the roof panel is (thick kitchen foil!). No wonder it's difficult to get a watertight seal between the rigid sunroof frame and flexing roof panel. During the summer, if we have a dry spell (no garage) I am going to remove the sunroof frame and reseal it with a mastic used for sealing in window frames and exterior fittings on caravans. It comes on a roll, is very sticky, about 3mm thick, 20mm wide and can be compressed to obtain a good watertight seal. I've seen it on eBay for about 8.00. A lot cheaper than a replacement gasket at about £80 from Renault! One thing still baffles me though. What does happen to the rainwater which collects between the outer rubber seal which is compressed by the closed sunroof glass and the inner sunroof frame as there are no drain holes?

Last edited by jamiechalmers; 1st January 2009 at 11:20 PM. Reason: additional info
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post #72 of 80 (permalink) Old 1st January 2009
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Seems like you have taken all the right moves so far. You are correct in that the MkI Clio did not have the drain holes, that was Mk II onwards. There have been plenty of threads on here re this issue and it seems you have hit the nail on the head.
I'm interested to see the mastic tape in operation. A write up with pics would be good for the Clio FAQ
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post #73 of 80 (permalink) Old 4th January 2009
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Thumbs up Clio Sun Roof

I have recently been plagued by very much the same problems and it was driving me to distraction.

The main problem is using Mastik sealant around sunroof frame as it just goes mushy when applied to wet surfaces. I shopped around and eventually got the problem solved by using product from a company which goes under the name of KENT.

It's expensive and its called Leak-Seal. It can be used in wet conditions and sets to a rubbery finish; I also applied same around the aerial base as this too is notorious for allowing water through the infra-red sensor housing. URL for product is as follows:
Good stuff.
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post #74 of 80 (permalink) Old 4th January 2009
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There is also an extensive range of water proof sealants used in the aquariums and garden ponds, etc - many of which actually cure under water usually for around £10 - £15

What did you pay for the Leak-Seal Jonesy??
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post #75 of 80 (permalink) Old 5th January 2009
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Leak Seal

Hello Madnoel,
The tube of solution for use with a sealant gun was £20 & the can was £15 - these prices before VAT and carriage cost.
Sum total worked out to £45.

Due to the lousy weather at the time and the car being parked in the open and never being allowed to dry out, I felt it worth the price.
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1994 , bodywork , clio , leak , renault , roof , sun

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