how to clean old polycarbonate roof% very dark stains near the wall?

From another Old geezer.
Wickes good idea leaflet states polycarbonate sheeting should only be cleaned with water and mild detergent applied with clean sponge and soft cloth.


I use my jet washer set for shampoo and rub over with very soft broom. Then jet rinse at low setting. If you haven't a jet washer you can get attachments for a hose that takes detergent.
Don't use abrasive creams. If stained check out at Wickes conservatory sales see if they can advise.

Charlie
March 2010