What is trench drain grating?
Trench drain grating is the grating panel that sits over a drainage trench. Water enters through the openings, falls into the trench and is carried away, while the grate itself stays strong enough to walk, drive or work over.
Grate, grating and cover
- Grate / grating: emphasises the open, water-admitting surface.
- Cover: emphasises that it closes an opening; a cover may be solid or grated.
- A grated cover does both: it closes the opening and admits water.
- Usage varies by region and by industry; the function is the same.
Parts of a trench drain grate
- Grate panel: the load-carrying open surface.
- Frame: seats the grate and transfers load into the slab.
- Trench or channel body: carries the water away.
- Fixing or locking: holds the grate in place under traffic.
Materials and finish
- Galvanized carbon steel: the common general-purpose choice.
- Stainless steel: for corrosive or hygienic drainage.
- Surface: plain or serrated depending on slip risk.
Where it is used
- Industrial yards, loading bays and process areas
- Car parks, forecourts and access roads
- Food, beverage and washdown areas
- Landscape and public realm drainage
Trench Drain Grating FAQ
Is a grate the same as a cover?
A grate is a type of cover: an open one that admits water. A cover may also be solid.
Which material should I choose?
Galvanized steel for general use; stainless for corrosive or hygienic environments.
Plain or serrated?
Serrated where the surface is wet, oily or sloped; plain for dry, clean areas.




