Hello I'm considering purchasing a pure water window cleaning system. The system pumps pure deionised water (<5 parts per million Total Dissolved Solids) through a telescopic pole to a brush which is then used to scrub window glass and window frame. It can also be used to clean other areas of the building exterior e.g. cladding. The water is applied liberally to the surface to be cleaned and I am concerned that the water may damage the customers building e.g. window frames, window hinges, seals, cladding, brickwork etc. Is this a valid concern ? thank you in advance, craig_mcd

David Your response has been very helpful to me. thank you again, Craig McDermott

You live in a luxurious environment to have such good clean water with TDS of 5 ppm C.V.Srinivasan India august 07