Hi
I have few carpet cleaning machines (prochm steam pro max) but non of it works well with a floor & grout cleaning tool. I mean, it does work but very good.
Is there a minimum power required to break the dirt on the grout?
Thank you
[/QUOTE Any portable would do much better job than 70 years old lady sitting on kitchen floor cleaning grout lines with something that resembles a toothbrush.
Seriously, you didn't mentioned what psi are you working with. I've seen tile&grout spinners working just fine with 450-500 psi. Is it ideal?
No, it isn't, but with right chemistry, agitation and heat, you'll get satisfactory results. You know, the man behind machine factor.
The reason that you're not getting good results is sitting most likely in your " powerful " 100, 200 psi pump....
I hope that helps.