Leaking window upgrade?

Joined
Feb 11, 2022
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Isle of Man
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Volkswagon
I have a T4 Navigator with a leaking window above the cab. I have removed the window and rotten wood, however the window is an old fashioned Perspex within a rubber seal design. I was wondering if anyone has replaced anything similar with an oversized piece of perspex bonded on from the outside? I have to rebuild the timber anyway so I can adapt it to any shape or thickness and at present if I retain the original window it requires a replacement seal. any advice or ideas would be greatly appreciated
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Might be worth trying Manx Marine. it looks the same as a boat window and seal. If they can’t help they should know who can. You can buy a tool to help slip the seal round the perspex. Might also be worth trying some boat forums too?
Good luck

(edited - spelling correction)
 
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Personally I would delete the window to prevent further issues
Am inclined to agree with TheBig1 - your OH cab looks like it's fibreglass? if so, then this is not even that difficult and (unless you're wedded to the extra light it admits) it might even look better what with it being a lovely bright white and no one need ever know a window had been installed there. Have a similar issue myself but it's all aluminium, so wouldn't be so straightforward to plug up the gap.
 
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I did consider it but when I put a bin bag over it as a temporary measure I was shocked how dark it made it
Do you mean the interior of the ‘van itself, or ‘just’ the overcab….?:unsure:
 
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Might be worth trying Manx Marine. it looks the same as a boat window and seal. If they can’t help they should know who can. You can buy a tool to help slip the seal round the perspex. Might also be worth trying some boat forums too?
Good luck

(edited - spelling correction)
I’m in Douglas today so I will call in and see if they have the seals
 
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I’m in Douglas today so I will call in and see if they have
there are probably loads of variations. Will depend on thickness of Perspex and the fiberglass. Google could be helpful too. Also useful videos on YouTube on how to fit. From experience, it can be tricky.

 
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there are probably loads of variations. Will depend on thickness of Perspex and the fiberglass. Google could be helpful too. Also useful videos on YouTube on how to fit. From experience, it can be tricky.
I am replacing the timber work tomorrow with tanalised 2x1 which will be very slightly different from the original thickness and I need to make a new roof lining either out of plywood or hardboard. I can take the window and old seal with me to see what they suggest. Island based would be better as there is nothing like seeing what needs to be done.

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I love the window and the light it must bring, SWMBO would have a fit with her leg in the air if I even hinted at covering it up.

So, my thoughts would be repair the wood to fit the size of a new window and install a modern double glazed one, which is fitted larger than the opening and sealed with silkaflex for a water tight fit. If it’s wood and fibreglass, then you can adjust to fit.

Good thing with those types of windows, is that it can fit a wider wall width too.

Lovely van by the way. Is that corrosion above the windscreen I can see, or just muck.

Try these, as they’ve a large selection of windows.

 
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Renew the rubber and then buy a strip on this to put just above the window rubber on the top.

and if needed the Perspex is easy to cut and fit as well if you need one larger or even smaller.

by the way when fitting the rubber make sure the join is at the top of the window.
and seal the joint as the last bit goes in.

 
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by the way when fitting the rubber make sure the join is at the bottom of the window.
and seal the joint as the last bit goes in.
Surely it would be better to have the join at the top so as to not give moisture a route in (water running down to the bottom of the window)…?:unsure:
Genuine question, not being picky!;)
 
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Surely it would be better to have the join at the top so as to not give moisture a route in (water running down to the bottom of the window)…?:unsure:
Genuine question, not being picky!;)
Yes it is sorry doing two things at the same time .
yes I stand corrected join at the top NOT AT THE BOTTOM altered my post number 13 to reflect this.
 
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