Steven Nuclean is safe on conny roofs its the only stuff I use now will even clean off litchin ( stiffer the brush the better ) you will prob still get odd stains that wont come off guttering but the shine is unbelievable . If you drip it onto windows it wont do any harm I even use it to clean windows trad and as an additive to wfp water .
So paulben, are you really saying Nuclean does not remove common tiger stripes found on a lot of old fascias etc and badly stained/discolured plastics then?
What does Smurf ? Iv tried a number of different products over the years but haven't found anything yet that will remove all
ingrained marks on upvc without polishing, Like Dazmond I charge to clean the fascia's but if I factored in extra time for
polishing out all the ingrained marks then I wouldn't get the job or get at a price worthwhile.
You can polish them from the ground ( pole fixi clamp and pad ) but its time consuming.
Then you have aluminium gutters and fascia's once they get corroded there's nothing you can do to remove the marks other than repaint.