VEVOR Garage Floor Mat, 157.48 x 59.05 inch PVC Garage Flooring Roll, Non-slip Diamond Texture, 64.58 sq.ft Covering Space, Garage Mats for Under Cars, for Gyms Boats Car Trailer, Silver

You can use all-purpose glue or latex glue with good viscosity to fix it.

You you check with a handyman at a local hardware store.

They are heavier than they look. They don't move while sweeping them. They move a little bit with use, but are easy to put back in place.

You could but I think it would be very slippery if it was really wet .. it’s quite durable

It is flame retardant.