sorry to be a pain ...another question..... walls above conservatorys?? will the hypo damage the conservatory roof?
should I keep rinsing the roof every 5 mins as I work ?
Will be absolutely fine mate, just rinse down after.
Sometimes, and it is only sometimes, the upvc can turn a bit yellow in places, but, and it’s a big but, that only happens if the upvc is very old and starting go slightly chalky. The yellowing will disappear over a few hours though.
A bit like when you clean frames that are old, and you get that milky looking water coming down the window. It’s just old.
Don’t worry about the seals, they won’t suffer any issues with a 2-3% mix. The exposure isn’t long enough or frequent enough to cause damage.
Of course, always inspect the roof first, to see if it’s in good enough shape to handle the mix. Ultimately though, I can’t think of one time that I’ve had to say no to a job through worry of damage .
Just do the basics:
Move plant pots
Move any garden furniture
Wet any shrubs or grass before starting.
Thoroughly rinse.
Thoroughly rinse/drench any effected grass/shrubs after.
Be honest with the customer that the mix can cause damage to shrubs. To cover your self!
