[Jeff Brimble]

The water sheeting or beading on the glass isn’t the reason for any spotting at all.

Repy 4 ,  What is ?

[mci services]

A drop of clearasill in your tank works wonders honest

[james44]

A drop of clearasill in your tank works wonders honest

So does dishwasher rinse aid tablets

[mikecam]

There are only there things that can cause you to see spots on a window.
1) it hasn't been rinsed properley.
2) dirt has run onto the glass in water after you have gone.
3) airborne dirt has landed on your water droplets left on the glass.

I don't think there are any other variables are there?

[♠Winp®oClean♠]

All we are doing is loosening dirt with a brush and relying on the flow to wash the particles away - big panes of beading glass need a lot of water for the drops to flow non stop five feet to the bottom. Spotting is simply impure water drying on the glass. Biggest offender being the top of the frame - you can't even see if it's clean followed closely by the seals and beading joins.

Spot on.

Trouble is, it will be argued over all week! :

[mikecam]

Trouble is, it will be argued over all week! :

You're wrong. It'll be about five days.

[Jeff Brimble]

4 me its been 12 years 

[mci services]

jeff you self admit to using very little water, have you tried using full flow and not rinsing off the glass on problem windows?

[Jeff Brimble]

Yes..... I also got 2X 8 gallon a minute pumps.

[mci services]

and did they still spot when dry?

[Jeff Brimble]

Yes,  lots of them, wanna come and have a go ?
I like Mikecams 3 variable answers to the original question. Maybe the guys that say they never have spots aint seen them yet. have a look next time you go round- just before you re clean the glass at the top 2" of the windows.

[james44]

Jeff have you ever watched a window dry? boring i know!

What i have noticed is that a window that beads, that the top of the window is the last to dry out not always but most of the time, this as you say is were most of the spots appear,

Have you noticed anything as to how a window drys?

[mci services]

Yes,  lots of them, wanna come and have a go ?
I like Mikecams 3 variable answers to the original question. Maybe the guys that say they never have spots aint seen them yet. have a look next time you go round- just before you re clean the glass at the top 2" of the windows.

yes that could be true that I have not seen them but I had windows with spotting when I did them trad and the reason was always leaks from gutters or badly designed con roofs or from vents and it was always the top 2" of the glass

anyway I won't lose any sleep on it as if it was a problem I am sure I would be getting complaints and I don't so why worry.

but I am still interested in the subject so I will read with interest

[mark m]

A drop of clearasill in your tank works wonders honest

So does dishwasher rinse aid tablets
I have a trolley system 25 litres half /whole etc tablet 

[mci services]

A drop of clearasill in your tank works wonders honest

So does dishwasher rinse aid tablets
I have a trolley system 25 litres half /whole etc tablet 

he was joking don't try it

[mark m]

Just started wfp and i do  get the odd window spotting i was wondering if there was a little sercret lol obivous know but i have heard people saying white vinegar , citrus acid i am sure there is a little secret out there ?. if you look on you tube you will a guy channging the flow with white vinegar probaly some one winding me up again

[mci services]

yes there is a guy he is a member on here and he added white vinegar, but it did not actually stop the spotting it just looked better his name is adders

[james44]

Clues are given in here!
http://en.wikipedia.org/wiki/Evaporation

[mark m]

thats the bloke adders  thanks for the that  is your 100% pure or do you put something in it

[james44]

This is interesting as well

http://www.newton.dep.anl.gov/askasci/gen06/gen06351.htm