Windscreen Fogging Up

VolvoMan

The windscreen in my car is becoming terrible for fogging up in wet conditions and I am wondering is there any product I can get to prevent it?

Thanks.

TheNog

Sorry VM for kinda hijacking your thread but it reminds me of something that happened to me about 4 yrs ago.

Was driving from Kells to Slane on a sunny day. Had just crossed over the bridge outside of Kells when I drove into a bank of fog about 100m long. When I came out the other side of the fog bank all the windows in my car fogged up in a split second. It was so bad I had to stop the car. I never experienced anything like it before. It was a sunny day at about 11am so the sun was warming and the area where the fog was a good bit cooler cos it was in the shade.

L1011

Generally if its only 'becoming' bad for fogging up and hasn't been before (and I don't just mean over the summer, compare to previous wet spells), you've got a leak in to the cabin.

rebel.ranter

MYOB wrote: »

Generally if its only 'becoming' bad for fogging up and hasn't been before (and I don't just mean over the summer, compare to previous wet spells), you've got a leak in to the cabin.

+1 for this. I have cured 3 leaks in three different cars for people in recent weeks. All had fogged up windows even without anyone in them. Check your carpets, particularly you rear floor to see if it is wet under the over-mats.

Mr.Boots

Spiders having sex in the back?

seriously...probably a leak as others said

congo_90

Is it when you're driving or when the car is parked up?

zilog_jones

Change your pollen filter if you haven't done so recently (should change it every 2 years or so). If it's clogged up or damp it's probably not helping your issue.

VolvoMan

Sorry, I only remembered I had started this thread today.

congo_90 wrote: »

Is it when you're driving or when the car is parked up?

It's in the morning and generally in cold conditions with the heater on.

zilog_jones wrote: »

Change your pollen filter if you haven't done so recently (should change it every 2 years or so). If it's clogged up or damp it's probably not helping your issue.

I'm thinking this could most likely be it. Thanks for that.

Is a pollen filter expensive to replace by the way?

stealthyspeeder

If you have air conditioning, turn that on and it will clear it up in a flash

R.O.R

You can also buy anti-fog stuff that's for bathroom mirrors. Doesn't work that well and needs fairly frequent application, but it's better than nothing.

Had to use that in a convertible kit car that had no working blower.

VolvoMan

stealthyspeeder wrote: »

If you have air conditioning, turn that on and it will clear it up in a flash

I do turn it on whenever it happens, but now it has gotten particularly bad even with it on.

R.O.R wrote: »

You can also buy anti-fog stuff that's for bathroom mirrors. Doesn't work that well and needs fairly frequent application, but it's better than nothing.

Had to use that in a convertible kit car that had no working blower.

Yeah that was what I was thinking of. Might give it a shot.

Just to let everyone know, there are no leaks in the car to my knowledge.

CJhaughey

Dilute fairy liquid works as an emergency defogger.

Berty

VolvoMan wrote: »

Is a pollen filter expensive to replace by the way?

About €10 depending on the car.

Have you tried checking if you have the internal air on recirculate?

VolvoMan

Berty wrote: »

Have you tried checking if you have the internal air on recirculate?

No, I don't think so, as I have rarely ever used it. There would also be an orange light on if that was the case.

Thanks anyway.

insinkerator

I have the same problem with my car, everyone says to blow hot air on it with the ventilation, but that only makes it worse.

Cold air solves the problem, but it doesnt make for a pleasant drive on a particularly cold day. Any ideas?

corktina

open the windows as you drive off to let out the old damp-laden air and let in fresh....it will help.

Ush1

I have the same problem. Particurlarly when the car is parked out on the road. Any certain method for finding leaks?

biko

Don't recirculate air with the recirculation option on your climate control. By not allowing fresh air inside the car, the "old," warm, moist air stays inside longer; when it hits a cool glass surface of your window, your windshield fogs.

BigEejit

I had that problem a few weeks ago, caused by offspring number 1 throwing up in the back of the car :mad:

BlackWizard

I've been having an issue for over a year with my car. The whole car would steam up when I don't have air con turned on.

I had a look around the car for the water drainage areas to see if there was any blockages. Right around my battery was filty. There were leaves and all sorts running down under my battery from the pollen filter. I followed the trail of dirt and found under my battery the two drainage holes where blocked with dirt. Looked like there was a 4inch water reservoir under my battery when it rained because of the ring of dirt going around that entire section of the car.

I pulled out the rubber drainage plugs and threw them in the bin. Useless things. Now I've two big wholes for drainage and no more misting up issues.

Rapidude

Get a dehumidifier and leave it running in it over night. My Z3M Coupe had no leaks but fog'd up frequently. Once it started raining it was twice as bad.

I left the dehumidifier running in it over a weekend and it took about 2L of water from the inside of the car. The mats were not damp and neither were the seats beforehand. (well not to touch anyway). It also removes any weird smells from the car (tobacco, damp etc etc).

It doesn't solve any problem of water leaking in but it does instantly stop the car from fogging up for a few months. Best way to find the leak imo is to go to a jet wash and have a mate inside inspecting for a leak while you concentrate jet spray on window seals, door seals sunroof etc. A re-gas of the aircon was the resolution of my 'leak'.