Floors surfaces should be unbroken.
They should also be free of holes and obstructions likely to cause a person to trip or stumble.
Mats should not be placed in aisles and doorways (and other floor areas with high levels of pedestrian activity) unless they are fixed to the floor and have an edge sealing to minimise the risk of tripping. It is advisable to have a vertical edge that is less than 10mm high therefore mats should have a sloping border instead of a vertical edge.
Grated floors should have openings that are less than 40mm wide and less than 5,000 square millimetres in area.
Gaps between sections should not be more than 10mm in width, whatever their length.