Question about Kärcher T-Racer T 5

Thanks to the adjustable pressure, the T-Racer can also be used on "more sensitive" hard surfaces. In my case, for example, on WPC (wood-plastic composite) decking boards without any damage or changes.

I use it to clean outdoor tiles. But when you talk about porous tiles, do you mean outside or inside?

Rather not. They will be like sanded down afterwards.