[LWC]

why is this, i have seen this asked before and some people say theres 2 types of glass or something, i cant quite remember what, hydro something

anyway, i can understand there being 2 types, but can you explain why it does it on identical windows on the same house/building???

[Count Phil]

It doesn't matter. It all comes up the same.

[U.S. wfp USER]

hydrophobic beads up.

[Sir Squeaky]

It doesn't matter. It all comes up the same.

Don't know about that.

[SherwoodCleaningSe]

All comes up the same trad but with wfp windows that bead need more accurate rinsing to come up well.  Windows that sheet you can get away with just dumping loads of water at the top of the window on the rinse

Simon.

[Jeff Brimble]

2 types of beading phobic glass as well, one that leaves droplets that turn into little white residue spots approx 8 per 4" square  and one that leaves the same droplets but no white spots. 
After 10 years of searching for answers I may have a very controversial reason but need just a little more time.

[M & C Window Cleaning]

why is this, i have seen this asked before and some people say theres 2 types of glass or something, i cant quite remember what, hydro something

anyway, i can understand there being 2 types, but can you explain why it does it on identical windows on the same house/building???

This is a good question. I've noticed this even when cleaning trad.

I have done my own windows four times now wfp and they still bead and sheet on the same window panes. What would be the explanation for this? They seem to bead all round the edges and sheet in the middle. They have never been polished, only ever cleaned trad before. Overall the wfp finish is very good when dried. However where there are small marks is always where the water beaded, not where it sheeted.

I don't foresee a problem where there are curtains at windows like I have, but I have numerous customers who don't have net curtains at their windows and I'm concerned that these custies might not be so satisfied.

[top rung]

I think you will find that is is in the manufacture some glass used to be rolled flat ,some glass used to be float glass which basically was poured out to required thickness and and left to cool.And now days alot of it is from belgium ,russia ,america.If anyone on   here is    from st helens they  should be able to get  some  answers from pilkington glass.

[Clive McDonald]

Jeff,
when you say you need a little more time, we could all do with that. I would be interested in your hypothesis about the white spots though.
Is it something to do with measles?

[Luke Johnson]

I cleaned my house yesterday with my wfp, but I havent got my systems yet so I just used tap water, but my tds is very low ( 34 ) some windows dried spotless, others had them tiny white dots, they werent obvious until I looked very closely.

[mark f]

yeh jeff would be interested.  sheeting glass comes up lovely but beading glass i struggle with.

  How do you guys rinse that then.

[Jeff Brimble]

Mark and Clive I think there may possibly be  a marketing opportunity so want to have a look into that first. 
 

[Clive McDonald]

I know that some sheets and some beads, and to sheet is better.

I've had my share of spots too. I wouldn't say I'm a spot expert though, and defer to your greater spot experience Jeff.

I do want to know what your theory is though.The idea that  uncontaminated zero TDS water can leave white spots on any sort of glass is preposterous.

And don't be so sensitive, any one who runs about with electric window cleaner on his truck should be a bit more thick skinned.

[Helen]

  How do you guys rinse that then.

Hard to explain in words but try this.
Put a pencil between your 2 palms and roll it. Now do the same thing with the wfp making sure that you hit every bit of the glass left to right then move down slightly and carry on spraying all the way down the pane.
This way you be assured of rinsing every bit of the glass with the dirt going down each of the individual channels.
Hope that makes sense boys.

[Clive McDonald]

very funny.

[Londoner]

OK so why on leaded windows do some squares sheet and others bead on the same window. I can't be the only person to notice this.

Am I ?

Also Rain Water you are right. Spots don't come from pure water they have to come from some form of contamination. Maybe we could have a spots topic soon to discuss the subject properly.

[NWH]

Old leaded windows are put together in individual squares thats why when you used to clean them with scrims etc they rattle,the glass is cut into the squares and fitted into the lead.The glass is cut randomly so one peice could be hydrophillic and one peice could be hydrophobic so theres the reason why some sheets and some beads.

[Clive McDonald]

At least someones talking to me Vince.

I feel a bit bad about having a go at Jeff B because he is one of the nicest and most helpfull people on here. He must have the huff because he hasn't come back.

Anyway, if I can be permitted to have another go at Jeff is it a coincidence that he often mentions that he uses very little water. Perhaps he doesn't rinse properly?

People with high flow rates have fewer problems. That's why back packs are not proper eqiupment(imo).

NWH, load of rubbish.

[NWH]

Measure the flow rate on the backpack on setting 1 or 2,i bet it`s no different to the flow rate you would use on the vanmount on a day to day basis.You obviously don`t have a clue as regards water usage.

[Clive McDonald]

There's a corellation between water usage and spots.People who use the least water generally have the most spots.
Then they think up daft reasons to account for it. Like In leaded glass some bits were put in upside down.