Mystery windscreen leak

Discussion in 'Hymer' started by DocHoliday, Oct 12, 2014.

  1. DocHoliday

    DocHoliday Read Only Funster

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    B544 Classic A class, 2003.

    I've been trying to track the source of this leak for over a year now. The top of the dash on the rhs just under the bottom corner of the windscreen is getting very wet in heavy rain.

    The only way I found to cure it last year was to apply Sticks Like Sh*t clear sealant to the top and bottom edges of the outside of the windscreen rubber over almost the entire right hand side of the screen.

    But the Sticks Like Sh*t perished in the sun after a few months, so I applied Indasa black windscreen sealant to the upper and lower corners. It's supposed to be good stuff, but horribly messy to work with.

    I thought everything was okay, but we had a dry summer and now the autumn rains have arrived with a vengeance (a prolonged downpour all of today) the wet patch has come back.

    Is this a common problem with Hymers?

    I just can't work out where the rain can be coming in. I know the only permanent fix is a new rubber seal, but I don't want to take the risk of the fitter breaking the screen when he takes it out.
     
  2. Chris

    Chris Funster Life Member

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    Crikey an A class leaking...

    My Burstner was leaking because the off side door had a ledge over it which diverted lots of water onto the window itself which it couldn't cope with.

    A classes don't leak though....

    Bullshit
     
  3. sb8263

    sb8263 Funster

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    if you don,t have a high excess on your insurance you could always give the windscreen a helping hand to crack....new windscreen and new seal at the same time.....:whistle::whistle:
     
  4. Badknee

    Badknee Funster

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    Not an A class but I used to drive a truck that leaked in much the same place. It was in fact a problem at the bottom of the screen and the wind blew it in. Took ages to find.
     
  5. DocHoliday

    DocHoliday Read Only Funster

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    This leaks when stationary, though. I'm wondering if it's getting in somewhere at the top of the screen and then running down inside the seal and emerging at the bottom. There aren't any drips from the top.

    Looks like I'll have to get more Sticks Like Sh*t and replace it every few months.
     
  6. Badknee

    Badknee Funster

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    You need to cover it with a blanket, that stuff work better with one because it's full name is "sticks like sh*t to a blanket". :moon2::rofl:


    Hope you get it sorted before winter.
     
  7. Johns_Cross_Motorhomes

    Johns_Cross_Motorhomes Trader - Motorhome & Accessory Sales

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  8. Badknee

    Badknee Funster

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    :Eeek: Creeping crack cure! :Eeek: ....Ooo, sounds a bit drastic that Peter.:moon2: :getmecoat:
     
  9. icantremember

    icantremember Funster

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    I hate to agree with Peter but Captain Tolley's creeping crack cure is probably the answer without the necessity of removing and replacing the screen.
     
  10. Timotei

    Timotei Funster

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    Used to have 2009 Rapido 999M, complete with leaking screen
    Water would collect on top of dashboard on LH side after rain and/or washing
    Large stone chip forced screen replacement thru insurance (£75 excess)
    Screen fitters showed me where the screen hadn't been sealed from the day the screen was fitted.
    He explained that when Rapido changed from using screen rubbers to bonded windscreens, Rapido didn't increase the size of the glass to allow for the missing seal, so the screen only just fits the aperture
    Have since changed the van (shame really it was a nice van but not quite to our liking)
    Sorry - have just realised you have mentioned screen rubber so not applicable to your problem
    As suggested above, I would check your insurance excess
     
  11. DocHoliday

    DocHoliday Read Only Funster

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    Thanks, everyone, I'll give the creeping crack cure a try. :)
     
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  12. DocHoliday

    DocHoliday Read Only Funster

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    I've dripped a few ml behind the seal at the top right, in several goes about 30 minutes apart. Now for some heavy rain to test it out.

    It's a bugger if it dries on the bodywork - very hard to remove. Lots of rubbing with T-cut eventually did it.
     
  13. Bedbug

    Bedbug

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    Same problem on my S670 just poured lots of "CAPT Tollyes" in now covered with windscreen cover for winter, keeping fingers crossed .
     
  14. DocHoliday

    DocHoliday Read Only Funster

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    I thought it had worked. We had absolutely torrential rain for a couple of days and not a drop got in. But the van was parked then. Today I've driven it in heavy rain and the usual area of the dash is wet. Must depend on the direction of the rain.
     
  15. Reallyretired

    Reallyretired Funster

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    Our MH has obviously had 'creeping crack cure' put on it at some stage. The windscreen doesn't leak, but when it's hot the creeping crack cure creeps down the windscreen and dries. It comes off with meths, but I'm hoping eventually it will all have crept out. Trouble is then the windscreen might start leaking.

    My previous Dethleffs had a huge leak after Autoglass had replaced the windscreen following a crack. Luckily found it while in the UK and they refitted it.
     
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