[ian1965]

I have got to give a quote for a car showroom insides, I will be doing it trad way but what do you recommend is the best cleaning liquid? Thanks in advance

[woody1]

fairy

[cozy]

Use the same as what you use outside mate.

[dai]

Try a dash of dish washer rinse aid with your usual liquid, just as much slide without the suds.
This mix is brilliant for anyone using a single pass tool like the old Wagtail combi or back flip.

[Frankybadboy]

gg4/gg3 with out doubt

use on all me shops.

[Sir Squeaky]

Vaseline. 

Oh sorry, you meant windows... Fairy definitely.

[Mr Bungalow]

I have got to give a quote for a car showroom insides, I will be doing it trad way but what do you recommend is the best cleaning liquid? Thanks in advance

If you want to clean them using traditional methods, the best thing to do would be to mix some purified water with some unger liquid perfect for leaving no smears as the pure water aids the evapourasion process on the glass.

Hope this helps.

Regards.