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Fiberglas™ Rebar

Stronger, Lighter And More Durable

Setting the bar in Concrete Reinforcement

Leave the rust, weight and price uncertainty of traditional steel behind for a superior alternative to concrete reinforcement. Designed with DOTs, Engineers and Contractors in mind: stronger, lighter, more durable and competitively priced – Fiberglas™ Rebar by Owens Corning is setting a new bar in concrete reinforcement.

Fiberglas™ Rebar vs. Steel

Fiberglass Rebar – also known as FRP, GFRP or Composite Rebar – is a more durable, proven and successful reinforcing alternative to heavy, corrosive steel.


2X the tensile strength compared to steel

More Durable
More Durable

Impervious to corrosion, longer service life


75% lighter than steel; ease of handling, labor and freight savings

Cost Competitive
Cost Competitive

Competitive and consistent pricing.

Non Conductive
Non Conductive

Electrical isolator and thermal insulator


LIGHTER. STRONGER. SMARTER REINFORCEMENT. Concrete cracks, water seeps in and corrosion of internal reinforcing steel causes concrete structure failure. Owens Corning® MATEENBAR™ Fiberglas™ Rebar is a proven, successful alternative reinforcement that provides longer service life in a wide variety of applications.

Aslan 100
  • Bridge Construction
  • Marine Structures
  • Tunnel Boring / Soft Eye
  • Rail
  • Electrical Isolation
  • Historical Preservation
  • Architectural
  • Balconies

Fiberglas™ Dowel Bars Fiberglas™ Dowel Bars For Load Transfer

Dowel Bars are used as a load transfer device between joints in concrete slabs. They provide a mechanical connection between slabs but allow for horizontal contraction and expansion of the slab itself. This results in lower deflections at the joints and reduced slab stresses. Owens Corning® Fiberglas™ Dowel Bars will not rust or corrode, meet shear capacity ASTM and ACI requirements and may reduce fatigue stresses in the surrounding concrete, due to the lower stiffness of the fiberglass dowels. These bars are also transparent and are frequently used in high-speed toll collection areas near inductance sensors.

Aslan 600
  • Joined Rigid Pavement
  • Automatic & Wire Guided Vehicle Areas
  • Posts, Canals & Desalination
  • Dowel Bar Retrofits
  • High-Speed Tolling Areas
  • Concrete exposed to Marine Chlorides


Owens Corning® PINKBAR® Fiberglas™ Rebar represents a compelling alternative to steel reinforcements for temperature crack control. 75% less weight resulting in 50% labor savings means winning on first cost compared to black steel rebar!

Fiberglas™ Rebar for flatwork

PINKBAR® Fiberglas™ Rebar is intended for nonstructural slab on ground applications:

  • Driveways
  • Sidewalks
  • Pool Decks
  • Basement Floors
  • Basement Walls
  • Footings
  • Concrete Masonry
  • ICF Construction
  • Parking Slabs
  • Warehouse Floors
  • Agricultural Slabs
  • Loading Docks
  • Architectural Precast
  • Truck Aprons
  • Pour Back Slabs
*PINKBAR® Fiberglas™ Rebar is not intended for use as reinforcement for high load-bearing applications: bridges, parking garages, foundation and basement walls, balconies, or CRCP for heavy state highways – in these instances, please use Owens Corning® MATEENBAR™ Fiberglas™ Rebar.


Estimate how much rebar you'll need and how much you could save with PINKBAR® Fiberglas™ Rebar on weight, trips from truck to job site, time, labor and material with our handy estimator.

Projects Sustainable, Innovative Rebar Solutions

Halls River Bridge

This initiative was led by the FDOT and includes members of academia, consulting engineers, and the Fiberglass Rebar (FRP/GFRP) suppliers and manufacturing community. Corrosion and extreme weather can lead to the collapse of conventional steel reinforced concrete. The Halls River bridge deployment is an example of how and why DOTs and engineers are choosing to reinforce structures such as bridge decks, piles, beams, seawalls and traffic railings that demand durability, strength and safety.

Project Examples
Floodway Bridge, Monitoba
Floodway Bridge, Monitoba
Brandon Bridge, Manitoba
Brandon Bridge, Manitoba
Emma Park Bridge Utah DOT
Emma Park Bridge Utah DOT
Penobscot Bridge, Maine DOT
Penobscot Bridge, Maine DOT
Electronics & Small Appliances
Boone County Bridge, Missouri DOT
Electronics & Small Appliances
Sierrita De La Cruz Bridge, Texas DOT
100 Bridge decks Built

Request a Quote

Contact an Engineer

How To

Product List & Guides

To learn more about how you can use composite rebar – see below for a comprehensive list of Owens Corning composite rebar products and links to country specific design guidelines.

American Concrete Institute

ACI 440.1 R

A comprehensive “Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars.”

Learn More


Bridge design guidelines for implementation of GFRP rebar in decks and railings in the United States.

Learn More

CSA S806 & S-6

Canadian bridge code requirements, specs, guides and reports using FRP bars.

Learn More


Technical report of FRP reinforcement in RC structures in Europe.

Learn More

Frequently Asked Questions

Fiberglas™ Rebar is a reinforcing material intended to be used in concrete to replace traditional steel type reinforcement. Made from fiberglass rovings to give the material it’s strength, and a vinyl ester resin to ensure its long life, Fiberglas™ Rebar has been used for over 20 years with excellent results.

The term GFRP/FRP stands for Glass Fiber Reinforced Polymer and is the same material as Fiberglas™ Rebar.

One of the largest contributors to our failing infrastructure is corrosion of reinforcement in concrete. This results in shortened lifespans for concrete, higher repair costs, and can present safety issues.

Fiberglas™ Rebar is a completely non-metallic material that removes rust from the equation. With nothing to corrode, Fiberglas™ Rebar offers a longer lasting solution that is price competitive with steel. It is also electro and magnetically inert, making it ideal for sensitive areas.

Fiberglass should be used in environments where corrosion is an issue and other rust-inhibiting measures are being considered. Fiberglas™ Rebar is also ideal in areas where no metal is allowed to be present for various reasons. Some examples of prime candidates for Fiberglas™ Rebar:

  • Bridge decks near marine environments or exposed to de-icing salts
  • Seawalls
  • Ports & Harbors
  • MRI Rooms
  • Wastewater Treatment Plants
  • Historical Rehabilitation
  • And Many More…

Fiberglas™ Rebar tends to cost about the same as epoxy coated rebar, but does not have the same price volatility as steel. It is significantly cheaper than Stainless Steel, MMFX, and other steel reinforcing options.

Fiberglas™ Rebar tends to be about double that of steel in tension. However, it does have a lower modulus of elasticity which can drive different design requirements.

Yes, Fiberglas™ Rebar absolutely can and is being used to replace steel in many structures of all shapes and sizes. However, this does not mean it can or should be used as a direct replacement. Oftentimes, depending on the demands, you may need a bit more or less Fiberglas™ Rebar. Typically, our designed are dictated by serviceability and crack widths.

To help with the implementation of Fiberglas™ Rebar, Owens Corning has engineers on staff to help ensure a safe and efficient design and layout for your project. Some of the more important tools that we and others use in making you project a success include:

  • ASTM D7957 – State of the art material specification
  • ACI 440.1R – Reinforced Concrete design guide for Fiberglas™ Rebar
  • ACI 440.5R – Specifications for construction with FRP bars
  • CSA S806 – Canadian design guide for Fiberglas™ Rebar
  • AASHTO LFRP Bridge Design Guide Specification for GFRP Reinforced Concrete Bridge(s)

At 1/4th the weight of steel, the weight of Fiberglas™ Rebar is a big positive! Some ways in which this can work to your advantage:

  • Speed of placement. Lighter weight results in more productivity, which could cut your install time by over 50% depending on the complexity.
  • Safety. Carrying lighter loads can reduce injures and result in less fatigue, and it poses less of a threat if dropped.
  • Shipping costs are likely to be a source of savings on some projects due to being able to ship more material on every truck.
  • The lighter weight will result in a lighter concrete structure, which may be beneficial in some applications.

Tying the Material:
Fiberglas™ Rebar can be tied similar to steel bars, and a plastic-coated tie wire is most common. In applications where no metal is allowed, nylon zip ties are an option.

Lap Splices:
Lap splices are done in the same manner as steel and can be tied to steel as well. The length required may vary, so it is best to confirm the correct value prior to placement.

Although it is a durable material, some care should be taken just as it should with any material. Handle as you would epoxy coated rebar and avoid dragging the material or physically damaging it.

Fiberglas™ Rebar is a very easy to cut material and can be cut with a variety of different saws. The recommendation would be to use a circular saw with a diamond tipped blade, but reciprocating saws with a blade for cutting metal will work for individual bars. Do NOT attempt to shear or torch the bar, as this will damage it and render it unusable.

All bends must be made in the factory and field bending is NOT allowed. We can work directly with you to make sure you get exactly what you need. We can manufacture the majority of your standard steel shapes as drawn. In some cases, we may break a larger, more complex shape down into multiple smaller pieces to meet your needs.

Straight bar is available ranging from #2 to #13 bar, while bent bar is available from #2 to #8

Our Fiberglas™ Rebar is acquired in a similar fashion to how you would buy your steel. We can take your bar list or drawings and convert it into a quote for you, and upon receipt of a purchase order we would begin fabrication. If requested, we can come up with our own bar list and will also help to optimize your project.

While we do have some distributors, we do most of our work direct. And if we do have a distributor in your region, we will gladly point you in their direction. If you have a specific material supplier you prefer to work through, we would gladly work directly with them to your benefit.

If you wish to purchase all of your rebar of any type from one source, we often work with and maintain a good working relationship with steel suppliers and manufacturers. As with distributors, we would gladly work with them to your benefit.

Unlike with steel, we do NOT sell on a price per pound basis. Rather, we sell on a linear foot basis.

Depending on the size of your project, the lead time may vary. In general, we can ship a truckload of material per week if it needs to be manufactured from scratch. Remember, at 1/4th the weight of steel, one truckload of Fiberglas™ Rebar would be equivalent in footage to four truckloads of steel!

From orders that pull from stock, lead times tend to be about business days to ship.

The average lead time on a standard project with some bends is 3-5 days.

We stock #2-#8 bar in 20’ lengths and have a minimal amount of 40’ bars available as well.

We also maintain stock on standard 90 degree bent shapes for #3, #4, #5, and #6 bar.

Talk to an Expert Your Owens Corning Experts

We know your business is important - which is why we have hand selected team members with knowledge specific to your needs. For immediate assistance, reach out to our experts below and we'll be in touch with you.

Mikhail Vorobiev

North America Fiberglass Rebar

Contact Mikhail
Ashish Gandhi

PINKBAR Fiberglas Rebar Sales

Contact Ashish
Douglas Gremel

Global Fiberglass Rebar

Contact Douglas