My upvvc has ingrained stains from bird droppings. I have removed the superficial mess but don't know how to get the ingrained stain out. Can you help?
http://www.dgsupplyline.co.uk/results.php?category_id=5&sub_category_id=87&range_id=272
See website above
A SPONGE PRODUCT 'the ERADICATOR' claims to raise all stains on upvc (costs under £5)
kikkby, October 2005
Try 'Bar Keepers Friend' available at most supermarkets (Sainsbury's) Apply with damp cloth (its a white powder).
Dont be afraid to rub hard as will not damage surface. Also good for stained plastic sinks/worktops.