The reliable way to hire a tradesperson

Is there such a thing as an anti slip, anti mould, waterproof wet room floor paint that won’t chip?

I just wondered if you can replace just one spot on ur carpet since there’s a stain or do you need to replace the whole thing.

I just wanted advise as you know from my bedroom socket I took spur to install 3 outdoor socket to my balcony so the spur goes from my bedroom socket to the junction box goes 2 outdoor socket plugged in 3 fridges. Other last socket goes to the shed and connected fuse amp plus inside the shed has light and outside floodlight connected fuse spur. My question is do I need RCD fuse spur instead of the junction box? As you know now days there is lot of fire is happening. Cables is 2.5 and protected by conduict. Three outdoor socket installed and of the socket outdoor RCD socket but do I need fuse spur? If you can kindly advise me Thanks