Fiberglass is a cost effective material when it comes to grating. This strong, lightweight material is easily fabricated into grating for custom drain applications. Its corrosion and chemical resistance puts it in a class with stainless steel, while being more economical. Consider using fiberglass grating in kennel drains, kitchen drains or drains exposed to salt water/coastal environments.
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.
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.