[britishwill]

Does anyone else find that some windows that a directly in the sun spot but only when its really hot?

Is it best just to finish early on those extremely hot days or is there a technique to counter it?

Thank you

Will

[bad trippy]

cant say ive ever noticed

[Ian101]

Rinse rinse and rinse some more

[Pope vader]

rinse more,  turn up flow

[britishwill]

Yeh it seems to happen on windows that I know are normally fine and then spot. It does not always happen just when its really hot I find!
I am going to try the extra rinsing, see if that helps.

[gary999]

extra rinsing

[Mike #1]

it has happened in the past with some windows in hot weather again a really  good rinse ,  MIKE

[Spruce]

I once saw the explanation on here was that the water dries before it bleeds down and off the bottom of the window with the last of the contaminates. So that's what gets left behind on the glass as spots.

The guys in Cyprus say they have to spray the glass with water first to cool it down before washing and rinsing.
Hence the advise to rinse and rinse some more, mainly to cool the glass down so the water can do its job.

Spruce

[andyM]

Yes I had this happen to me today!
A large farmhouse property where the sunlight was directly on the front of the property and temperature of 27 degrees.
Didn't notice until I had finished and went round the front. All other windows around the property out of direct sunlight were absolutely fine.
So had to re-clean the fronts. 

[bad trippy]

How they hell do you guys know if your windows are spotting, do you go back a couple hours later?

[Neil Gornall]

I does not matter how much you rinse, if the dirty water has already dried you won’t rinse it away.
The trick is to rinse sooner. ie. don’t wash 2 or 3 windows then rinse, wash one and rinse immediately

[dave f]

i live near some farm land and  did this house went back to collect custy said when did you do etc told her she thought i was lying i took a look you shoud of seen the state full of spots runs any way turns out that famer giles had been crop spraying said the hubby still dint get paid so thats strike one

[Mike #1]

that is bad that they did'nt pay it should of been obvious to them that it was not your fault

[kris martin]

my explanation on spotting in the heat is that everything is dryer an there is a lot more dust in the air when the sun has been scorching...

could be wrong but ya never know

kris

[andyM]

I think Spruce's theory makes a lot of sense.
The glass I had a problem with yesterday always beads up. I did rinse the glass a couple of times knowing the sun was directly on it. But because the glass was so hot (27 degrees+) it was drying before all the dirt had a chance to be rinsed off.
If the water had sheeted on this glass I believe it would not of caused a problem.
I should also add that it probably did not help that the area around the property is dusty anyway with having a large gravel drive and being on farmland.

[Tom White]

How they hell do you guys know if your windows are spotting, do you go back a couple hours later?

In a few years, once you've gotten some bigger accounts than those little £5 terraces you clean, you will find that by the time you finished one area of a large property and start working on another section of it, that the first area you started cleaning will have dried.

You can also pretty much tell how a window is going to 'dry' (either clean or 'spotty') before it's actually dried.

Now that I've explained that to you, can I just add that I hate n00bs shiners.  Red-arses the lot of yous; ruddy crows.

 

[Spruce]

Tosh is right when he says that with experience you can see how a window will dry off before it has. In the early days of WFP I did several inspections over the course of a few hours to make sure the job was right, especially first cleans. It was only after a couple of cleans that I started to trust that they would be clean. It's all part of the WFP learning curve.

I guess we all know which windows are still going to give grief on our regular round. I have a couple of houses that have top openers above a large lower window pane that always streak. Just clean them now and redo the bottom glass the following day as I drive past.

Spruce

[dai]

The problem with beading glass is that it's easy to rinse too fast.
we rinse from the top side to side bringing the brush down a little lower each time, but if you bring the brush down faster than the water runs away you will leave dirt behind.
Sometimes you can see rinsing water form tiny riverlets that flow down between the beads, of course the dirt in these beads will be left behind. I find it does a better job rinsing beading glass with the brush just on the glass, you are then breaking the surface tension of the beads as you go.
Sheeting glass is easy, we can rinse the whole pane from the top if we want to.