Make sure the glass is really clean - you'll be surprised at how dirty a new car can be.
It’s comes with a solvent to clear the glass with. I have a clay bar in case I need to get more dirt out after a good clean.
There tends to be sticker and crayon(?) marks. I wouldn't rely on just the included solvent. Might need more.
It will be washed first, I can then put a glass cleaner on there before doing the solvent clean. Should be enough? Gtechniq have some good guides usually so I’ll check that out too.
Karcher is ok, the outlet usually do packs with a patio cleaner attachment although ours slowly fell apart and I just use the jet now.
Pressure washers don't damages cars - not sure where you read that. Sure if you use the ultra powerful stone cleaning wand on the rubber of a car you might do some damage, but if you're sensible then you won't do any damage.
I think most people use a pressure washer of some description these days, particularly as you need it to operate a snow foam spray. Maybe don't go for the largest most powerful, but anything reasonable will do your patio and car. I have a Karcher K2, but I think in general Netfisk are recommended to be more reliable.
I have a Nilfisk and they do an Auto nozzle which gives you a nice wide spray for rinsing the car off and also reduces the pressure. I used to have a Karcher, but I can’t really compare them as the Karcher was a really old model.
I’ve york stone and it was ok for a few years but stones started to break bits off it and it’s now got to a point where it’s scrap. That said, probably got 7 years out of it doing a stone patio 15m x 10m, a few stone paths and a large wooden decking area.
Just as an aside, I had my car ceramic coated and in my experience it does make the washing so much simpler. Seems to stay cleaner too.
I apply shampoo with the foam gun too, so then 1 bucket to rinse is all that's required. I use Dodo Juice Born to be Mild, and just mix enough for a bucket full with enough water to fill the spray.
