[Davew]

On conservatory roofs that is. Why not use a cheap wfp from ebay - the type for caravan cleaning etc. and then use a hose with the customers water?

[Mike_G]

Because it will dry terrible

[Davew]

Mmm finish off with a squirt of pure? Or does ordinary water not eat through the green?

[Mike_G]

Finish off with pure would be perfect

[niceandclean]

I always clean with normal tap water on conservatories, if bad a bit of TFR, then once clean polish up with pure!

[Alex Gardiner]

I live in a soft water area so if I am doing a large conservatory roof I always use ordinary tap water.  If I am just doing a small roof I use pure.

[Londoner]

Most Conservatory roofs benefit from a bit of detergent and a good scrub. By the time the customer realises they could do with a clean they are covered in green algae and too far gone to use your wfp on.

A brush from B+Q or Halfords is fine and tap water is OK because the roof is opaque plastic and spots won't show.

[Trevor Knight]

We scrub with tap water normally connected to clients tap and then rinse with pure from our van.

Always seem to get good results and no complaints.