What does serrated grating mean?
Quick answer
Serrated grating has notched (toothed) tops on the bearing bars to give extra grip underfoot. It is chosen for wet, oily or icy areas where slip resistance matters, at a small cost in surface smoothness.
The serrations are small teeth cut or punched into the top edge of each bearing bar, creating a rougher walking surface that channels liquid away and bites into shoe soles. Plain (smooth-top) grating is used where slip risk is low or a flush surface is needed.
Serrated grating slightly reduces the net top bearing area and adds a little cost, but for stairs, ramps and process areas with spillage it markedly improves safety and is often specified by code.
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