[Rogue Trader]

Why does rain not contaminate pure water?

[chrismroberts]

I think rain is very pure, or at least very low TDS.....

[Wayne Thomas]

Rain can contaminate pure water left on windows. I don't offer a rain guarantee and choose to work in light rain, not heavy downpours when wind is blowing it onto the glass sideways because the chances are it will contaminate the pure water ever so slightly and give the customers a chance to moan.
If it's raining heavy and I'm too far behind with work then I'll just use hot water all day in strong rain to minimise contamination of pure water because the water is drying as soon as it's put on the glass.

[Captain Scarlet]

unless your living next to heavy industry/fumes or electricial facilities then there is no way that the rain will spoil your finish, Luke

[Wayne Thomas]

If you read Concept2o's website you will have noticed that even they admit that rainwater mixed with pure water will contaminate, raise the TDS left on the glass. If you don't believe me then read it for yourself.

[windowwashers]

Rain can contaminate pure water left on windows. I don't offer a rain guarantee and choose to work in light rain, not heavy downpours when wind is blowing it onto the glass sideways because the chances are it will contaminate the pure water ever so slightly and give the customers a chance to moan.
If it's raining heavy and I'm too far behind with work then I'll just use hot water all day in strong rain to minimise contamination of pure water because the water is drying as soon as it's put on the glass.

do you mean the water is going cold as soon as it hits the glass ?

[windowwashers]

If you read Concept2o's website you will have noticed that even they admit that rainwater mixed with pure water will contaminate, raise the TDS left on the glass. If you don't believe me then read it for yourself.

it rain water is at a tds reading of say 003 you use 000, when it hits the dirty glass it goes up from 000 to say 015. you rinse down after.

the only time there should be a problem if the rain water is carrying dirt or sap or what ever, most of the time it doesnt.

I worked today, and went back to check a few hours later as it was a big job, not a spot in sight.

you tell me how many times you have seen rain leaving lines on windows I know it does but very few times, most of the time it does not, therfor you can clean in the rain, yes the odd time it will make a mess, thats where the rain guarentee comes into play.

I am not trying to change people thoughts about cleaning in the rain, just telling you mind.

Some do it, some dont, alot wont cause they get wet.

Ian

[MatthewStanley]

unless your living next to heavy industry/fumes or electricial facilities then there is no way that the rain will spoil your finish, Luke

Or by the sea 

Regards

Matt (by the sea) Stanley

[windowwashers]

unless your living next to heavy industry/fumes or electricial facilities then there is no way that the rain will spoil your finish, Luke

Or by the sea 

Regards

Matt (by the sea) Stanley

lol  Matt (by the sea) Stanley

I dont live by the sea anymore 

so I guess the wind is your nightmare not the rain 

[Wayne Thomas]

Working in the rain is okay on most windows except windows that are exposed to the elements, i.e. Bay windows, windows without the cover of decent soffits, windows that have the rain run straight down the walls with no run off lip above the window where they leave mineral deposits, windows with lead flashing above the glass, that kind of thing. I'll work in light rain without any worries. But, when it's hammering down with the wind blowing sideways, unless I'm really behind or it's commercial work, I'd prefer to stay home and catch up on other things.

[[GQC] Tim]

Rain is fine, Rain + (Horizontal) Wind and nearby trees/fields is not.

[Purecleanplus]

My subject on mineral stains points to the largest problem with rain. Light rain on the windows makes a little but no major difference with wfp, but large quantities running down the roof, dripping off guttering, running down masonry etc spreads the dirt. Often it's most noticable at the bottom where it drips off troating (the projecting lip above the window) and hits the window ledge, splashing up.
The same reason me and my mate leave the tops to finish dripping even on warm sunny days.

[Davew]

I reckon rain does make the windows dirty. Not in large spots of dirt but lots of minute particles that build up over time. Not enough for a customer to complain but definately not as clean as on a dry day.

[Conflagration2000]

I live at the seaside and if its windy, sand gets blown onto the wet glass. No that's a real pain in the whatsit  when your doing trad as the sand gets under your blade etc. but with wfp its a quick rinse before you start. I think most customers around here accept that windows aren't going to stay clean for weeks after you've cleaned them. 

[AuRavelling79]

... Often it's most noticable at the bottom where it drips off troating (the projecting lip above the window) and hits the window ledge, splashing up.

...

A new word for my vocabulary! - is it pronounced trow-ting (as in row as in row a boat) or trout-ing (as in the fish)?

[Ian Lancaster]

unless your living next to heavy industry/fumes or electricial facilities then there is no way that the rain will spoil your finish, Luke

Or by the sea 

Regards

Matt (by the sea) Stanley

Hi Matt,

With you there.  The problem is salt - if there's a wind sea water can rise as spray and mix with rain, you then get a salt solution which will dry to leave salt on the glass.

Had that in 1976 (hurricane) took a month to get the salt off all my customers windows.

[oasisdweeb]

so how do u clean using hot water!!!!!!!

[Davew]

Well it's stopped raining now and my windows on my house are...........filthy!

[oasisdweeb]

clean em then

[Londoner]

There is such a thing as dirty rain. If you don't believe me look at a clean car after one of those summer downpours. Thick brown dust, some of it from as far away as Spain or even the Sahara is carried on the wind and gets washed down by the rain.

When you see big black clouds the black colour is caused by dust and or pollution trapped in cloud.

Generally though the rain is pretty well pure water.