Upvc is marketed as maintenance free, but it does need cleaning, and with the majority of upvc being installed in the colour white this can become unsightly.
The weather causes much of the problems for upvc, leaving deposits of algae an unsightly green colour, guttering becoming blocked, filled with leaves and moss causes rainwater to overflow and again gives the upvc black streaks.
Then there is road traffic i.e. emissions giving your upvc a dull off white/grey look.
So, at some point in the lifetime of upvc it does need cleaning or a makeover, and you can be confident that here at Robin Hood Exterior Cleaning we can produce amazing results with our knowledge of cleaning techniques and chemicals.