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Prevent Ice/Frost on Windscreen

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TheArchitect
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PostPosted: 14:22 - 20 Jan 2016    Post subject: Prevent Ice/Frost on Windscreen Reply with quote

Any tips on preventing ice/frost settling on my car windscreen?

thanks Thumbs Up
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angryjonny
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PostPosted: 14:24 - 20 Jan 2016    Post subject: Reply with quote

Move to Egypt
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Doovy
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PostPosted: 14:35 - 20 Jan 2016    Post subject: Reply with quote

Flat cardboard sheets on the screen, wipers on top?
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P.addy
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PostPosted: 14:45 - 20 Jan 2016    Post subject: Reply with quote

Sheet over it overnight. Would probably just set wipers so they are in the up position and slot a sheet of card/tarp/brothers clothes over and wedge them down.

Alternatively leaving the car running with the heaters on max Laughing

I have found however if I park my car in front of the house, it doesn't ice up, if I leave on drive its icy as fuck. Get it out of the wind.
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angryjonny
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PostPosted: 14:52 - 20 Jan 2016    Post subject: Reply with quote

<sensible hat>
Shelter is key. Our drive runs between our house and next door and parking the cars down there means they're very rarely frosted up, compared to other cars parked out on the street etc.

Even parking under tree helps, but then you have to clean off bird crap instead.
</sensible hat>
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MarkJ
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PostPosted: 15:09 - 20 Jan 2016    Post subject: Reply with quote

We the Halfords equivalent of one of these, works a treat. Just trap each end inside the doors and you're ice free in the morning.
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stinkwheel
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PostPosted: 15:13 - 20 Jan 2016    Post subject: Reply with quote

Anything you put on it can become frozen to it with sufficient moisture.

How I laughed at my neighbour attempting to chisel a piece of ice-ridden doormat off his windscreen.

I personally have for many years used a bottle of warm water to defrost my windscreen in seconds. I take an empty bottle/tetra-pack from the kitchen bin then put it in the outside bin next to the car when I'm done with it.


In B4 Windscreen will assplode. It wont.
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P.addy
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PostPosted: 15:38 - 20 Jan 2016    Post subject: Reply with quote

stinkwheel wrote:
Anything you put on it can become frozen to it with sufficient moisture.

How I laughed at my neighbour attempting to chisel a piece of ice-ridden doormat off his windscreen.

I personally have for many years used a bottle of warm water to defrost my windscreen in seconds. I take an empty bottle/tetra-pack from the kitchen bin then put it in the outside bin next to the car when I'm done with it.


In B4 Windscreen will assplode. It wont.


I too have used warm water and will continue to do so. Thumbs Up
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Islander
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PostPosted: 15:39 - 20 Jan 2016    Post subject: Reply with quote

stinkwheel wrote:
In B4 Windscreen will assplode. It wont.


He said as his windscreen assplodes... Razz
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smegballs
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PostPosted: 15:41 - 20 Jan 2016    Post subject: Reply with quote

Why do bike seats freeze up before the rest of the bike? Other night the seat was frost, but drops of liquid water on the tank Confused
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TheArchitect
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PostPosted: 15:41 - 20 Jan 2016    Post subject: Reply with quote

some good and not so good ideas Rolling Eyes

Will do the warm water thing I think. Have already tried wiping the screen with vinegar but that just smears on the next rainy day and smells like a chippy.

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whitedevil
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PostPosted: 15:56 - 20 Jan 2016    Post subject: Reply with quote

Mix 1/3 isopropyl alcohol with 2/3 water in a spray bottle, keep it in the car and spray your window in the morning. The alcohol lowers the freezing point of the water and will clear it in seconds without the worry of it shattering the glass.
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stinkwheel
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PostPosted: 16:18 - 20 Jan 2016    Post subject: Reply with quote

whitedevil wrote:
The alcohol lowers the freezing point of the water and will clear it in seconds without the worry of it shattering the glass.


Isopropyl alcohol is expensive and I'd be concerned what it would do to the rubber window seals.

Shattering the glass by pouring warm water on your windscreen is not a worry.

It doesn't happen.

Prove me wrong.

Sometimes if it is VERY cold, it freezes again almost immediately. I've had this happen but we're talking down below -15 and you'd probably want to be running the engine to warm up for a bit before driving off anyway (especially if you've seen what engine oil at -15 looks like).
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Rogerborg
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PostPosted: 16:23 - 20 Jan 2016    Post subject: Reply with quote

£12.75 for 5 litres, delivered, with a big 100ml syringe thrown in (not literally in it).

Mixed 1/3 that's 85p a litre, which is far less than anything you'll buy in the supermarket or garage. Diluted, it won't do anything to rubber seals, prove me wrong.

That said, I use warm water though, because that's (heating costs) / litre.
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stinkwheel
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PostPosted: 16:41 - 20 Jan 2016    Post subject: Reply with quote

Much cheaper than last time I looked at buying the stuff for homemade backpacking stove purposes.

Interestingly, I strongly suspect a 5l IPA would be breaching most couriers terms of carriage. I can't have a 5l surgical spirit (essentially ethanol) delivered to work by our specialist medical couriers. They deliver 5x 1litre

Rogerborg wrote:
Diluted, it won't do anything to rubber seals, prove me wrong.


MSDS states nitrile gloves for handling suggesting it will attack rubber-based materials to at least some extent.
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sickpup
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PostPosted: 17:01 - 20 Jan 2016    Post subject: Reply with quote

Go to Halfords and buy their blue screenwash for £3.50 for 5 litres. Put in a spray bottle and spray over your frozen window. Good for about -8. Or get the purple stuff for £4.50 for 5 litres for -10 and below.
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smegballs
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PostPosted: 17:23 - 20 Jan 2016    Post subject: Reply with quote

sickpup wrote:
Or get the purple stuff for £4.50 for 5 litres for -10 and below.


I didn't realise grape drank has such wonderful antifreeze properties!
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Lord Percy
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PostPosted: 17:28 - 20 Jan 2016    Post subject: Reply with quote

smegballs wrote:
Why do bike seats freeze up before the rest of the bike? Other night the seat was frost, but drops of liquid water on the tank Confused


As a guess I'd say it's because of the thermal properties of metals vs the thermal properties of the seat leather/plastic.

Consider that metals get hotter quicker than most things when you apply heat to them. The physics remains the same in cold weather. So as the temperature approaches zero, the metal parts on the bike are still more absorbent of any heat radiation that comes into contact with them, no matter how insignificant. Hence the metals are actually a little bit hotter than other parts, and that's why the ice forms on the seat first.

If the tank is made of plastic or whatever else, the same rule still applies - it's all about thermal properties. Well there are probably a few other niggly factors too, e.g. smoothness of the surface (bike seats are usually rougher so they'll catch and retain more water vapour), but that's the jist of it.

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andyscooter
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PostPosted: 19:36 - 20 Jan 2016    Post subject: Reply with quote

I put a cover on it
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Fladdem
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PostPosted: 19:50 - 20 Jan 2016    Post subject: Reply with quote

I went fording in the Jimny two weeks ago, the water came up over the bonnet and had about 6 inches of water sat in the foot well after it leaked in. The heater had packed up about a week before that. Laughing

So now in the morning I have to go out to the car 15 minutes early to scrape the inside of the windscreen, the outside, the dash board, the roof, anywhere that water condenses will freeze over. I may as well take the bike, it's warmer because my gears pretty good, cheaper, and I can park at work on the bike. Laughing
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Pete.
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PostPosted: 19:51 - 20 Jan 2016    Post subject: Reply with quote

Warm water here too. I use a 4l milk bottle full of warm tap water. You want it no hotter than uncomfortably warm.
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Rogue_Shadow
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PostPosted: 21:28 - 20 Jan 2016    Post subject: Reply with quote

Free bottle of de-icer if your with 02 (Priority App)

I'd normally use the lukewarm water approach, adding abit of salt if it's really heavy.

But I got a heated screen now and I'm never in a hurry to get the work van moving first thing Smile
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iooi
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PostPosted: 21:54 - 20 Jan 2016    Post subject: Reply with quote

Rogue_Shadow wrote:
Free bottle of de-icer if your with 02 (Priority App)


+11 Thumbs Up

Gotta love this as they keep me supplied each year.
Even better as we have 3 02 accounts.
Even better this year took daughter with me and flashed the 2 apps. Never got to the "use it now" as he rung them straght through....
Double whammy Laughing

Must admit their purple grape washer fluid is nice. Simply wait till they have a offer on and BOGOF with a load Thumbs Up
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Ariel Badger
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PostPosted: 22:32 - 20 Jan 2016    Post subject: Reply with quote

I save the methanol left in my tank at the end of a meeting and in the winter it goes into the screen wash bottle.
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andys675
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PostPosted: 23:24 - 20 Jan 2016    Post subject: Reply with quote

makes a big difference if I park facing where the sun will come up, the screen definatley clears quicker
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