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Post by fellows on Dec 30, 2020 15:41:12 GMT
Hi all, a quick question about mk1 roof drains, specifically, how are they supposed to work?
I ask as I opened the boot of my car to find water pooled around the edges. I've previously changed all three rear light gaskets so these are good. I therefore pulled up all the boot carpet, set down paper towels and watered the back of the car!
The drip i found was coming from one of the screws on one of the passenger side parcel shelf covers. This means that my roof is leaking slightly (despite being only two years old). However, given that the drains are on the interior of the car does this mean that it is expected that there will be minor leaks from the roof and that the water will run across the parcel shelf and away?
This seems mad, but otherwise why have internal drains!?
Is this just a feature of these cars I've never clocked before, that there will always be some water ingress to deal with, or is my roof a problem that can be rectified? Or just buy a car cover!?
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Post by Zed. on Dec 30, 2020 16:37:34 GMT
condensation is a thing  I'm sure the boot in my silver car was wet due to condensation, roof leaked above the doors (schrunk vinyl) and during the day it was reasonably dry, in evenings the bootlid would have drips covering its underside  now both my cars are sodden & I'm past caring   Rich. |
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Post by atlex on Dec 30, 2020 17:15:45 GMT
I keep kitchen roll just laying about in my cars and boots as a general anti-condensation thing. I can also recommend the silica ball packs. Between them it's .. OK.
As for leaks, get someone to hose down the car while you're in it with an inspection lamp or decent torch, there's a load of places water can ingres. and inspect the rain rails of the hood, drill out the sills (listen for sloshing).. clean out the hood drain tubes with a small pipe cleaner kit.. I could go on .. :-)
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gbuk
Chats A Bit
Posts: 130 
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Post by gbuk on Dec 30, 2020 19:40:58 GMT
Hi all, a quick question about mk1 roof drains, specifically, how are they supposed to work? I ask as I opened the boot of my car to find water pooled around the edges. I've previously changed all three rear light gaskets so these are good. I therefore pulled up all the boot carpet, set down paper towels and watered the back of the car! The drip i found was coming from one of the screws on one of the passenger side parcel shelf covers. This means that my roof is leaking slightly (despite being only two years old). However, given that the drains are on the interior of the car does this mean that it is expected that there will be minor leaks from the roof and that the water will run across the parcel shelf and away? This seems mad, but otherwise why have internal drains!? Is this just a feature of these cars I've never clocked before, that there will always be some water ingress to deal with, or is my roof a problem that can be rectified? Or just buy a car cover!? I have precisely this problem with my Mk 1. Yet to investigate, but pulled a very soggy and nasty smelling cotton towel out the other week when I had to swap the battery. |
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Post by fellows on Dec 30, 2020 20:23:37 GMT
Having a quick look further, I think the rain rail is leaking a bit, which then causes water to run along the parcel shelf and through gaps/ screw holes etc into the boot area.
Changing the rain rail looks like a pain too!
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Post by fellows on Dec 30, 2020 20:24:54 GMT
Happily the roof drain holes are all clear and I think the rear lights are all sealed too, so hopefully it's just the one source...
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Post by wannabe on Dec 31, 2020 2:59:52 GMT
I'm glad it's not just mine that leaks like a sieve Is there a guide for the roof rain rails anywhere online that is easily to hand? I've not searched yet but thought I'd ask in case it was a quick find for someone who already has it! |
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Post by martiny on Jan 1, 2021 13:34:15 GMT
To answer your question about the drains, no, drips aren't supposed to run across the rear shelf. Water is supposed to run around either side until it gets to the end of the rain rail and then drop inside the car straight into the "cup" on the rear shelf which funnels into the drain tube.
If there's a lot of rain it'll just run around on the surface in the channel where the roof is pinched against the plastic beltline behind, but inevitably some will seep through between them , so both are tucked into the rain rail which should catch those drips and feed them round to the drains.
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Post by wannabe on Jan 2, 2021 1:40:52 GMT
To answer your question about the drains, no, drips aren't supposed to run across the rear shelf. Water is supposed to run around either side until it gets to the end of the rain rail and then drop inside the car straight into the "cup" on the rear shelf which funnels into the drain tube. If there's a lot of rain it'll just run around on the surface in the channel where the roof is pinched against the plastic beltline behind, but inevitably some will seep through between them , so both are tucked into the rain rail which should catch those drips and feed them round to the drains. This is a great, clear explanation, thank you  |
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Post by fellows on Jan 3, 2021 19:23:00 GMT
To answer your question about the drains, no, drips aren't supposed to run across the rear shelf. Water is supposed to run around either side until it gets to the end of the rain rail and then drop inside the car straight into the "cup" on the rear shelf which funnels into the drain tube. If there's a lot of rain it'll just run around on the surface in the channel where the roof is pinched against the plastic beltline behind, but inevitably some will seep through between them , so both are tucked into the rain rail which should catch those drips and feed them round to the drains. Thanks for that. Mine appears to be dripping in a few places from around the rail inside the car. Some investigation required... |
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Post by Zed. on Jan 3, 2021 20:02:09 GMT
removed the rain-rail from my silver car, it doesnt leak from there now but, I removed the ragtop aswell fitted a hardtop....... cars soaking inside Rich. |
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Post by dadbif on Jan 3, 2021 22:30:49 GMT
I has a similar problem with a flooded drivers footwell on a Vauxhall viva, solved it by drilling holes in the floor....
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Post by wannabe on Jan 4, 2021 1:51:01 GMT
I has a similar problem with a flooded drivers footwell on a Vauxhall viva, solved it by drilling holes in the floor.... Given I had half an inch of water in my driver's footwell last time I drove it, I'm thinking the same solution might be an option... |
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Post by dadbif on Jan 4, 2021 8:29:53 GMT
If you do use the floor holes as a solution, drill the holes in the lowest point of the floor, then put the rounded end of a ball pein hammer or similar over the hole and twat it to create a funnel effect, doesn’t need to be much, but assists the egress of water 💦
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Post by suggs84 on Jan 4, 2021 10:00:51 GMT
My car has also had a small water leak for some time and defo seems standard for Mk1 Ownership. This was the inside of my boot, upon purchase in October 2019;  Lovely right? Took a lot of cleaning and scrubbing to get all that nastyness off the car. From time to time i do see condensation under the boot lid but I always wipe it away and that dampness has never returned so fook knows how many years it took for all that mould to form! My leak seems to be where the back of the roof comes down to the car, this is because after pro-longed heavy rain I had a pool of water in the spare wheel, that had then trickled down hill and soaked the lower floor. I now keep kitchen roll squashed all around the inside of the spare wheel to act as a sponge but it hasn't been a major issue since. My inner drain holes are all clear, i've cleaned them out recently and there was no blockages. The rust you can see in that photo I assume is via the upper rear brake light but have never noticed any water coming in from here. |
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le sigh