Inspection cover and flooring

[houseofzane]

Hi I have a lean too at the side of my house. Has upvc windows and doors and a flat roof. It’s a narrow corridor. We use it almost like a utility room with a tumble dryer and shoe storage. It has an old concrete slab floor with an inspection cover for a drain from our toilet.
I was thinking of changing the inspection cover for a recessed one so I could use resin aggregate and put a new floor in. From what I understand you cannot just swap out the cover you need to change the tray as well?
I’m just trying to make it look a bit nicer in there or should I put down something like rubber matting that could be taken up if access required. Appreciate any help or suggestions

 

[foxhole]

You could over board with timber and cut a hatch in it then you can put down any flooring .