Fiberglass Grating (FRP)get quote button

Fiberglass as a Grating Material

Fiberglass grating in polycast 600 channel

Fiberglass is a material that has been found very useful in some trench drain grating applications.  This strong, lightweight material is easily fabricated into grating for custom drain applications.  It’s chemical and corrosion resistance puts it in a class with stainless steel, while being more cost effective.  Think of using fiberglass grating in kennel drains, kitchen drains or drains exposed to salt water or coastal environments.

Where to use Fiberglass Grates:
Duragrid custom fiberglass grating

Have you had cast iron grates stolen or corroded due to caustic conditions?

Try replacing those areas with high load capacity fiberglass grating.  Whether you need a large open area for fast draining or tight grate openings for ADA surfaces, Trench Drain Systems offers custom fiberglass products for your drainage application.

Fiberglass grating w/o gritted surface 1inchMolded Fiberglass

Fiberglass grating can be molded into large sheets for later fabrication into smaller, custom shapes.  Mesh grating is made by laying fiber reinforcing materials in grid work shaped mold and bonding them with polyester or vinyl ester resins.  Other resins are available for special applications.  The molded product is ground to the desired thickness and flatness.  Slip resistant coatings are applied to the surface at this time, if required.  Trench Drain Systems offers the following molded fiberglass grating products.

MicroMesh molded fiberglass grating
Micro-mesh

A molded fiberglass with ¾ inch opens built on a 1.5" x 1.5" frame.  It comes in 1" and 1.5" thicknesses.  Micro-mesh can be made with or without a slip resistant coating.  Open area for Micro-mesh is 44%.  The weight is 2.9 lbs per square foot for the 1" thick mesh and 4.5 lbs per square foot for the 1.5" thick mesh.  Micro-mesh is available in light gray and dark gray.

Polycast 600
Square Mesh Grating

Molded mesh grating is one of the most common types of fiberglass grating.  It is available in a 1", 1.5" and 2" square mesh.  Thicknesses vary from ½" to 2".  And, resin types can be varied to meet your corrosion and fire resistant needs.  For standard trench drain applications, polyester resins are used most often.  Open areas for mesh grating range from 58% – 87%.

High Load Capacity molded fiberglass mesh
High Load Capacity (HLC)

High load capacity molded grating is commonly used in applications where heavy loads (such as fork truck traffic) are encountered in corrosive environments.  Also, HLC grating has been used in areas where cast iron grates are prone to theft, as they have no metal scrap value.  HLC mesh (1" x 2") is made with high strength vinyl ester resins and come in 1.5" and 2" thicknesses.  Non-slip surface coatings are available." Open area is 48%.  Grating weights are 6.2 and 8.4 pounds per square foot, respectively.

Get a quote now on Fiberglass Grating for your Project! Request Quote Now

Pultruded Fiberglass gratingPultruded Fiberglass

Pultrusion is a fiberglass forming process whereby reinforcing fibers are pulled through an extrusion die while vinyl ester polymer resins are extruded under pressure.  The act of “pulling” fiber while “extruding” resin leads to the term “pultrusion”.  Fiberglass shapes made by this process come in long, continuous shapes.  In the case of fiberglass grating, the shapes have cross-section akin to rectangular bars, tees and I’s.  To make bar grating, these long bars are assemble parallel to each other and connected by structural cross members (known as tie bars) on 6" spacing.  A non-slip coating is applied to the grating after assembly.

Trench Drain Systems offers the following pultruded grates and frames for sale in your custom size.
Standard I Bar fiberglass grating
I-Bar Grating

Available in 1" and 1.5" heights, I-Bar load bar spacing is on 1", 1.5" and 2" spacing, which also defines the open area of the grating.  I-Bar grating that have load bars on a 1" spacing (I4010 and I4015) are ADA approved with 40% open area." I-Bar grating is available in polyester resin (yellow) and vinyl ester resin (dark gray).

T-Bar fiberglass grating
T-Bar Grating

This type of bar grating is especially good for pedestrian surfaces that need to be ADA approved.  It is available in 1", 1.5" and 2" bar thicknesses.  Open area is mostly under 40%.  T-Bar grating is available in 12% open area with a fine slip resistant coating that is used in water parks and boat dock decking.

HI5815 Fiberglass bar grating
High Strength I-Bar Grating

I-Bar grating is available for use in applications where heavy loads will be experienced.  Available in 47% and 58% open area (1.19" and 1.5" bar spacing), high load capacity bar grating is made in 1", 1.5", 2.0" and 3" thicknesses.  Slip resistant coatings are a standard feature for this product.

Y Embed frame and M-Clip hold down for fiberglass grating

Fiberglass Frames and Clip Assemblies

The pultrusion process is also used to manufacture fiberglass frames.  Trench Drain Systems offers two frame styles to use with your grating.  Stainless steel clips are also available to secure your grates when installed.

Get a quote now on Fiberglass Grating for your Project! Request Quote Now
Stainless Trench Drains
Zurn Trench Drain
Polycast Trench Drain
TrenchDrainGrates.com banner