Pure water has been through a reverse osmosis and de-ionisation filtration process to take out all the minerals and impurities. It is these minerals that leave spots and streaks on glass when cleaned with ordinary tap water. I filter my own water to ensure that the dissolved solids level is brought right down to zero.
Why use this method of window cleaning?
This method has many advantages over traditional window cleaning with a bucket and squeegee:
1) Better cleaning results Purified and de-ionised water actually attracts and absorbs dirt particles, cleaning more effectively with no need for detergents or chemicals. Traditional window cleaning leaves a detergent residue on your glass. Rainwater then reacts with this residue leaving spots. This does not happen with pure water, meaning your windows will stay cleaner for longer. With the pole method, the windows are scrubbed with a soft brush that has a trickle of pure water flowing through it. Then the windows are rinsed with the pure water. There is no need to squeegee the water away, as the pure water will dry naturally, leaving an impressive streak and spot free finish. Windows can be cleaned in all weathers with the pole method, maintaining the regularity of cleans.
2) Increased privacy, reduced disturbance The risk of damage to you property is virtually eliminated: No ladders lent against windows or gutters, or getting toppled onto your conservatory. No ladders in your flower beds or leaving holes in your lawn and no one up a ladder looking in your upstairs windows! 3) Better access Inaccessible windows, very high windows, conservatory roofs etc, can easily be cleaned with a water fed pole. Also this method is much safer for the window cleaner than cleaning up a ladder.