hi i working traditional and customer paying extra for it cos i said it will take a few cleans to get on top of it all and will get them better next time. the colour has faded but is mainly like black scale and want to get them as good as i can.
You could use TFR but you would need to rinse for longer as it goes a bit like fairy and bubbles up.
will give the pvc cleaner a try thanks lads for any advice. there some good geezers on here
one thing confuses me about using solvents on upvc and its this ..... If the solvent is too strong wont it take the protective surface off ?