The only reason I TFR and then snow foam is to give a longer dwell time especially when the car / van / Lorry is really dirty.I'd usually TFR, rinse then snowfoam.
A wee video I made today showing both the products and technique working really well
What kind of sprayer are you using to apply the TFR @Big Pimp
The range is a tidy piece of kit. But on more important matters you have some work to do my friend lol
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I actually use a mains powered 'fence sprayer' kind of thing that I found up at work! I found it about a year ago, serviced it and it's been working like a charm since!
I use a hoselock pump spray 5l bottle and it's great for tfr and also ultra gloss, they are fantastic and with the bend on them they can easily spray under the arches.