FRP Rebar – Frequently Asked Questions (UltraRebar)

What is FRP rebar and why use it?

FRP (Fiber Reinforced Polymer) rebar is a non-metallic, corrosion-resistant alternative to
steel rebar.
It’s ideal for applications exposed to moisture, salts, or chemicals and offers:

• No rust or corrosion
• Lightweight handling (75% lighter than steel)
• High tensile strength
• Non-magnetic, non-conductive properties

Where can FRP rebars be used?

FRP rebars are suitable for:

• Slabs-on-grade
• Foundation footings and walls
• Driveways, sidewalks, and patios
• Retaining walls, seawalls, culverts
• Wastewater treatment, coastal, or chemical zones

Always check with your engineer to confirm FRP is acceptable for your specific structural
application.

How do I cut FRP rebars?

Do not shear cut FRP bars — it will damage the fibers and compromise strength.
Use a diamond blade saw for best results. A carbide blade saw is a workable alternative if
needed.

How should I chair FRP rebars?

Use the same chairs as steel rebar, but since FRP is slightly more flexible, you may need
additional supports to keep spacing and cover consistent.

How do I tie FRP rebars?

You can use:

• Standard tie wire, just like with steel
• Plastic clips, such as the Snapper System from Encore Fasteners
  (https://encorefasteners.com/product/snappers-fasteners/)
• Nylon zip ties as a quick, fully non-metallic option when clips are not available

Can I bend FRP rebars in the field?

No. FRP bars must be factory bent. They cannot be bent cold or with heat — doing so will
break the fibers and invalidate structural integrity.

How should FRP rebars be stored on-site?

• Keep off the ground to stay clean and avoid contact with mud or debris
• Stack flat and avoid tight bends or crushing
• Per ACI guidelines, do not expose to UV longer than 4 months
• If longer storage is expected, tarp the bars or store them in a shaded area

Do I need special training or tools to install FRP rebars?

No. Crews familiar with steel rebar can use FRP with little to no adjustment. Just remember:

• – Don’t bend them
• – Cut with saws only
• – Use more chairs if needed

Are there any limitations or codes I should know about?

Yes. While FRP is approved in many DOTs and recognized by ACI (440.1R and 440.6), it is
not for prestressed applications and requires different development lengths.
Always confirm engineering specs and local code acceptance.

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