Moisture problem inside car

daivid

cherryblossomzel wrote: »

No idea about the filter. I'd like to think they replaced it before selling me the car in Feb.

Don't count on it, my approved honda had no pollen filter in it but as I didnt notice until I'd had the car a year without any problems it seemed a bit pointless complaining.

As for the windscreen its not a problem I've suffered often, though I would suggest giving the inside a good clean with a suitable glass cleaner and wipe down with a lint free cloth.

cherryblossomzel

Thanks everyone for the comments. I've got a few things to look at, which I will do over the next few days. The footwells are dry, except for a slightly damp driver's side mat, probably from my wet shoes rather than a leak. Boot also dry, but I forgot to check the well where the spare tyre goes. Pollen filter is looking dirty, so will replace it as soon as I can get a new one.


Really wet windscreen this evening again when I left work. The giant jazz windscreen (well, giant compared to my last car) is turning into the bane of my existence.

wba31

Strider590 wrote: »

Sealing the inside of the car from the outside is not what matters, in fact that would make things worse, you already have small vents in the boot, which lead out into the space behind the rear bumper. If the door seal tear isn't causing water to flood in, then it's probably not an issue. The problem is the inside air has more moisture than the outside.

This might help you understand
http://www.dpcalc.org/

Set the first slider (air temperature) for 20c and the humidity for a typical winters 30%, the 3rd slider shows the temperature required to form condensation on a surface (windscreen).

So at 20 degrees and 30%, a 2 degree C surface will form condensation.
But at 30 degrees and 30%, all it takes is a surface temp of 11 degrees C.
Finally, if the inside was at 5 degree's 30%, you'd need -11 outside before condensation would form.
I'm also being generous with the humidity level, inside a warm car with a driver/passenger, it'd be closer to 50% humidity.

Basically the cooler the air inside, the less condensation you'll get and if your anything like my GF, you'll be blasting uncomfortably hot air into the car on every journey past late October.

I tried this concept last night, turned off all heat about 1 mile from home and dropped the front 2 windows. looked like a bit of a nutcase with 2 front windows down on a cold November evening, but it was all in the name of science...
This morning, what was extremely heavy condensation yesterday morning, was much lighter this morning. I have also put newspaper in the car to soak up the air moisture, but they wont have made a massive difference overnight.

Will try tonight 2 miles from home to get the car colder inside...