Floor Gratings

Floor gratings are made using metal in a grid pattern to provide traction and allow for water drainage over an opening. The grid pattern can be formed by metal bars, small openings, or holes punched into a larger piece of metal.

Gratings are common in industrial and commercial facilities and are used in production plants and on sidewalks where liquid or debris may be present. The increased tread of a floor grating helps to improve safety by preventing water buildup or allowing a walking surface to become slippery.

Floor grating can also be used in general applications as barriers or building material. Because grating is strong and lightweight, it’s popular for many different uses. It’s not uncommon for municipal and federal laws to require different types of facilities to use floor grating on walkways or in areas where there is a potential for fluid leakage.

To allow for airflow in a building, grating may be integrated into the ventilation system. Beyond functions such as these, grating can be used to provide shade, be a handrail support, act as decoration, or function as an ornamental screen.

Depending on the application, floor grating can be made in many different thicknesses, dimensions and patterns. The pattern that is used helps to determine how the liquid will flow and how much traction the grating will offer. Ovals, diamonds, and squares are common patterns.

Floor grates are usually made using strong metals like steel, aluminum, iron, or stainless steel. These can be galvanized to offer further protection against corrosion and chemicals that may be present in the environment. To galvanize grating, manufacturers hot-dip pieces in a layer of protective zinc oxide.Read More…

Leading Manufacturers

Metals, Inc.

Oakwood Village, OH | 800-492-7304

Grating Pacific, Inc.

Los Alamitos, CA | 800-321-4314

DFW Grating, Inc.

Dallas, TX | 866-819-0033

Interstate Gratings, LLC

Lindon, UT | 888-499-8494


To reduce waste, manufacturers sometimes use expanded metal which has been made of metal sheets expanded into predetermined sizes. In perforated metal, a hole pattern is created using a punch or press. A fiberglass grating is lightweight and slip-free. It is also immune to rust and fire.

The pattern that is chosen for a floor grating is based on its strength properties and the architectural needs of the application. The percentage of area on the grid that is open to water and light is also a critical factor.

Heavy-duty gratings are welded or created with pressure-locked bars. Floor grates like this are less likely to warp over long periods of time.

Grating is sometimes used for stair treads, in which case the metal chosen for manufacturing is usually perforated or expanded. This design prevents people from slipping on the stairs and does not allow for mud, water, or other materials to build up.

Trench grates can be found in industrial facilities and even on city sidewalks. These long and narrow grates act as a drain that people can walk across while still giving workers an access point to pipes and systems underneath.

Gratings Informational Video