Stair Tread Panels


Fiberglass Reinforced Plastic stair tread geometry is conveniently designed for cutting common stair step sizes with little or no waste material.

Cutting guide channels are provided at 6-inch intervals for quick error-free sizing of stair steps.

In addition to superior corrosion resistance, UltraGrate Fiberglass Grating Stair Treads provide strength, durability, and ease of fabrication and maintenance for an economical and practical structural product.

FRP Stair Tread Panel Geometry:

  • Stair Tread panel size: 120” x 22.75”
  • Stair Tread thickness: 1.5”
  • Stair Tread bearing bar spacing: 1.5”
  • Stair Tread cutting guide spacing: 6.0”

Common FRP Stair Step Cuts:

  • 24” Wide Steps: 10 Stair Steps / Stair Tread Panel**
  • 30” Wide Steps: 8 Stair Steps / Stair Tread Panel**
  • 36” Wide Steps: 6 Stair Steps / Stair Tread Panel
  • 42-54” Wide Steps: 6 Stair Steps / Stair Tread Panel
  • 60” Wide Steps: 4 Stair Steps / Stair Tread Panel**

** No Waste Material

Typical Deflection Properties for FRP Stair Tread Panels:

Properties based on concentrated load deflection applied at the midpoint of the tread, centered on the nosing to simulate a football.

For more information, see our chemical resistance guide, installation notes, and details on fabrication of fiberglass grating in our  Fiberglass Grating Options Brochure.

In addition to our Fiberglass grating, we offer a complete line of standard structural pultrusions to complete your FRP grating project.

Our FRP grating products are produced using only the best available quality processes. Learn more by viewing our:


At Liberty Pultrusions you can:

We are committed to servicing our customers’ needs by providing superior customer support, aggressive pricing, fast delivery and the highest quality pultrusion products available.

Contact us today!