Fiberglass Reinforced Plastic (FRP) for Signs by KAL-LITE

High-performance FRP panels and fiberglass reinforced plastic sheets ideal for sign substrates — weather-resistant, lightweight, printable, and built to last outdoors.

From Sheet to Shape — Faster

KAL-LITE’s new CNC router delivers custom FRP signage without the wait. We now offer custom shapes, lettering, and exact cut-to-size panels — all crafted in-house for faster turnaround and consistent quality.

No middlemen. No extra cost for cutting. Just durable, weather-resistant FRP panels shaped exactly to your specs and ready to install.

What You’ll Get:

Custom cuts and complex shapes
Clean, accurate edges every time
Consistent quality from prototype to production
Shorter lead times, all under one roof

Your vision deserves more than standard panels — it deserves Kal-Lite precision.

experts in flat-sheet FRP

Fiberglass Reinforced Plastic (FRP) Sign Substrates

There is a reason why they call a sign, a sign. It signifies something important about where you are or who you are.

If it is a sign for your business, then quality and presentation is crucial. If it is sign for vital information, then the message can’t be obscured by fading or cracking.

With its superior performance characteristics, (low) cost-effective, and easy workability – FRP sign substrates have become an ideal material for signage that won’t fade, crack, or fail. And with custom colors and cuts, you’ll always have precisely the look you need.

Whether you are representing a business or getting a message across: FRP sign substrates from Kal-Lite is the smart, dependable choice.

Where Ease Meets Longevity

Why the Sign Industry Prefers FRP Panels & Substrates from KAL-LITE

Flat Sheet FRP Available in Many Sizes

Standard Thickness: .090″ | .120″ | .135”
Standard Widths: 48″ and 60″
Custom Widths available: from 11″ – 60″
Lengths: Standard lengths include 8′, 9′, 10′, and 12′
Custom Lengths available: Custom length sheets (call for more information)

Flat Sheet FRP Available in Many Colors
Depending on how much light you would like to transmit through your sign, Kal-Lite provides opaque options as well as varying degrees of translucency (think backlit street signs).

Flat Sheet FRP Is Extremely Easy to Maintain
Because it is constructed of a single non-porous sheet, FRP is easily cleaned, more durable, and more resistant to the elements.

FRP Is Lightweight
Because of its light weight, FRP is the fabricating substrate of choice for sign professionals around the world

Here is your sign

Four Reasons to Choose FRP Panels for Sign Applications

Our Flat Sheet FRP Is Incredibly Durable

In addition to being non-conductive, our flat sheet FRP is resistant to impacts, scratches, corrosives, acids, fading, and more.

Our Flat Sheet FRP Provides Easy Adherence

Our Flat Sheet FRP can be receptive to paint, ink, vinyl, glue, adhesives, and reflective overlay materials.

Color Variety and Finishes Are a Snap

As always, the Kal-Lite Division has the ability to provide color options that give you all the options you need when manufacturing your products

Our Flat Sheet FRP is Easy To Work With

Because of its construction, flat sheet FRP is easily screened, painted, routed, cut, glued, and/ or drilled. This makes fabrication easy for any signage professional. For the end-user, it is incredibly easy to clean and maintain.