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Chip Butty

Condensation on inside of windscreen

Anyone else getting this ?

It happens occasionally in my car and it's weird. I got in the car at 6pm tonight after leaving it all day in the work car park and the inside of the screen was completely covered in condensation.
PG

I had that the other week on all the inside windows. As you say, very weird and very occasional.

I suspect that it might be condensation coming back into the car from the aircon system and must depend on a particular combination of outside and inside air temp and humidity levels to happen.

It used to happen all the time in my Mk II Cortina. But then that leaked and the footwells were damp.  
gonnabuildabuggy

PG wrote:
It used to happen all the time in my Mk II Cortina. But then that leaked and the footwells were damp.


That was my thought.
Chip Butty

Carpets bone dry, no leaks when it hammered down a few weeks ago.

I've turned the recirc off as per the handbook instructions and I've boiled my nuts tonight on full heat for 20 minutes to dry the ventilation system out.
.

Yep - every morning for me too - never happened in Freddy - it had no A/C.  Apparantly if you coat the inside windscreen with Rain X, it stops it.
PR

I left my current wheels parked in town for a couple of hours earlier and when I returned the rear screen was completely gunged up inside. It doesn't seem to happen usually if the a/c has been switched on beforehand (conditions permitting).

I think it's just a temperature-related anomaly and nothing to worry about (apart from being a bugger if it's on the front screen).
Grampa

Sometimes get it inside the Mini and have never managed to work out why - as GZ's car it's bone dry inside and there are no leaks as far as I can see - seems to be no consistency to when it happens. Never get it in the Astra.

Something to do with the air con perhaps?
DaveGibson

It's just dampness in the car condensing on the cold glass. You might think the inside of the car is dry but there's always some residual moisture. When air is warmer, it can hold more vapour than at cooler temperatures. Since the glass cools faster than the rest of the interior, that residual moisture condenses on the windows.
Pkh72

My Focus doesn't suffer from this but the Fabia does, i think the rear door seals let some water in when it's subject to a heavy downpour. It's something to monitor in case it requires dealer warrenty tinkering.
I always make sure the inside of the windscreen is free of that traffic film type cack that you get, i think that seems to help.
Gurney

Had this in the GTA a couple of weeks ago, en route to Keswick from Penrith. It was -4 so the aircon had shut down (Alfa say it can not be used below -2 and it shuts off automatically). Never seen so much condensation and for the whole journey I had to have maximum de-mist to keep it at bay. There were 4 of us in the car and despite requests to the other 3 to quit breathing it seemed to have no effect. Never come across this before, mind you the GTA is the first car I have had with full climate control, maybe it is something to do with it.

Never heard the one about RainX on the inside of the screen, I used to use RainX on the outside religiously but now use Carlack sealant as per JohnC, superior in every respect.
gonnabuildabuggy

Gurney wrote:
There were 4 of us in the car and despite requests to the other 3 to quit breathing it seemed to have no effect.


I find gaffer tape usually works to resolve this, failing that strangulation - after you've done the first person the other 2 normally keep their breathing to a minimum.
TreVoR

I get it in mine but I do carry wet dogs every day so the liner in the boot is always damp.

The aircon shifts it no problems.
Gurney

Sticky328 wrote:
Gurney wrote:
There were 4 of us in the car and despite requests to the other 3 to quit breathing it seemed to have no effect.


I find gaffer tape usually works to resolve this, failing that strangulation - after you've done the first person the other 2 normally keep their breathing to a minimum.


Did consider strangulation but wasn't sure I could pull it off whilst driving, surely there is a course for this somewhere?

Normally the Alfa blitzes condensation it has 3 blobs behind the rear view mirror, one for sensing rain, one for condensation and the other is a small GPS receiver for the scamera warning gadget in the rear view mirror.

I presume Alfa's decision to limit the use of climate control to just -2 is as a result of not giving a toss about colder climates. Even the smarts basic air con merrily blasts away at -5 and below.
DradusContact

Check your door seals havent split?
Gurney

DradusContact wrote:
Check your door seals havent split?


Will do. Zero defects so far so due some niggle I guess.
scamper

No, but i get condensation on the inside of the boot lid in the girl's car.
DradusContact

Rubber just perishes with age, if its anything over a few years old it can start to go.  Its rare for it to happen to anything younger than 5 though.  Rubber suspension bushes rarely live past 10 years old.
the other ct

Quote:
Focus doesn't suffer from this but the Fabia does, i think the rear door seals let some water in when it's subject to a heavy downpour. It's something to monitor in case it requires dealer warrenty tinkering.


My Fabia VRS was terrible for condensation and not helped by the a/c being very weak (it was vastly better on the 11 year old Primera that followed). The dealers were very helpful but never really improved it.
Gurney

Just checked the door seals on the GTA and they are 100% fine so no idea why I suffered on that particular day.
Alf McQueef

I've hardly ever had this except in cars which were leaking (Pug 309 especially). Our Focus was doing it badly and it turned out the rear NS footwell carpet was soaked - maybe because the bottom of that door is rusting badly and we'd driven it in a monsoon not long before.

Wet yourself less when driving, is my advice
spooner

I've had it on quite a few cars especially in the winter when the sun has been out during the day, thus warming the inside of the car up. When the temperature drops, after the sun has gone down, condensation appears on the screen.
gooner

Used to get this on the Golf. I used a moisture absorbing pot that I got from Homebase. Seemed to do the trick.
DarthBalls

the other ct wrote:
My Fabia VRS was terrible for condensation and not helped by the a/c being very weak.


Our Fabia 1.4 is the same.
Giant

My van had ice inside the windscreen during the cold snap a couple of weeks ago!
Soulless

My sierra has had ice on the inside. My rear windscreen every morning has condensation on. I think there might be something wrong with it.
Roadsterstu

scamper wrote:
No, but i get condensation on the inside of the boot lid in the girl's car.


Well known MX-5 issue - lift the carpet out and see if it's wet underneath.  If it is, check the rear light seals, or take the light clusters out, clean the seals and the bodywork where the seals meet and put a thin film of Vaseline on the seals.  Should do the job.  Failing that it could be a leaking rain rail at the bottom of the hood - it can crack over time or perhaps not put back properly when the hood has been replaced.  Condensation on the inside of the bootlid is usually one of those two reasons.
Apex clipper

DradusContact wrote:
Rubber just perishes with age.


1..gents toilet....avaliable in flavours and 'ribbed'..

To GZ.. My focus has a habit of doing this, only when I have the heater on quite 'hot' then park up and the outside temps are cold or moist???
Alf McQueef

DradusContact wrote:
Rubber just perishes with age


Being exceedingly anal in such matters I use the Autoglym stuff that restores rubber/plastic (forget what the product name is, it's a sort of green gel and works brilliantly) on all the rubber seals every year or so - it protects rubber, and works really well.
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