[roburt]

hi every one i have just got a wfp system but  i was ask by a custy if it would remove some black stain off his sill can i use detergent and what sort does any one no as im new to the wfp. thanks for looking.

[cat9921]

If they are stained then you are going to need something else then WFP to remove it, Some one on here could give you a better answer but I find JIF <------ I think it was called JIF is OK for getting black stains off plastic

Adders

[Stephen Dwyer]

I doubt that the wfp would remove the stain.  Your best bet would probably be to buy a window frame/pvc cleaning liquid.  It comes in a spray bottle and the liquid is a pink colour. 

[Mr Bungalow]

Hello Roburt,

The best way to remove any type of black marks usually, is to use a good quality upvc cream cleaner, such as soudal and use a good quality non-scratching scourer; once it has been removed polish the treated area with a good quality wax furniture polish.

Hope this helps.

Regards.