Its been a week of putting a 1x2x3 board on it with weights and it still wants to curl up. I don’t want to use duct tape. I have to move it to mop so fastening it the floor is out. It is commercial grade and idk why it wont relax on the ends.
(This is a stock picture of the same mat.)
Heavy objects on the corners.
If they’re the rubbery kind, you can also put them out in the sun until they’re more pliable than they are at room temp and keep the corners pressed down so it ends up staying that way even after cooling down and you no longer need anything holding it down.