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Level 3 Reinforcement


Green Umbrella® Fiber MacX™ is a variable dose, high impact resistant, wear-resistant, secondary reinforcement concrete fiber uniquely designed to enhance durability, fatigue, and flexural strength and performance. Providing isotropic, three-dimensional, stick fiber reinforcement with a strength comparable to WWM or light rebar without the potential for failure due to alkali or corrosion. The even dispersion promotes impermeable concrete that is resistant to concrete cracking due to fatigue. Secondary reinforcement with equal strength to Welded Wire Mats (WWM) – FiberMacX reinforces without the need for large mats or light rebar materials, labor and installation, as well as potential vapor barrier damage due to puncture. The elimination of standard wire mats or rebar eliminates potential future failure due to corrosion. Place and finish crews no longer have to maintain steel reinforcement across a complete grade or deck, eliminating the need for re-tying bars or re-setting chairs. Attack crack formation and reinforce the concrete matrix with doses starting at 3lb per c/y with 4x the other products’ macro fiber count.

The next generation of reinforcement

Green Umbrella & FiberMacX

Green Umbrella™ FiberMacX mechanically locks in the fresh concrete matrix, controlling cracking.

FiberMacX is a secondary reinforcement that replaces wire mesh and light rebar. It eliminates permanent weakening of the concrete caused by crack formations. FiberMacX is durable, fatigue resistant with added flexural toughness and impact resistance.

It Improves your bottom line.
FiberMacX displaces evenly. It doesn’t clump or protrude, making it transparent in the mix, meaning it does not affect the final look , including when polished or dyed.

Cut Your Labor

Reinforcement in the mix.

Comparable to adding wire mesh mat and rebar into the concrete mixer… Instead of spending hours tying metal and mesh reinforcement on the ground, FiberMacX is reinforcement within the mix.

Cut Your Downtime

Repair time dramatically reduced.

The need to return to cracks and repair them is dramatically reduced/eliminated. After the pour and finish, a project moves forward without needing to set aside time for repairs such as punctured vapor barriers, cracking due to mat misplacement or plastic cracking.

Cut Your Environmental Impact

Materials reduced.

Less manufactured materials are needed. For example, the amount of large, heavy metal mats and rebar is reduced, meaning less industrial waste and transportation pollution.





Compression Tests of Concrete Cylinders

Isotropic reinforcement means fiber reinforced concrete is stronger from top to bottom.

Fiber Reinforced Concrete

  • Top 62% 62%
  • Middle 75% 75%
  • Bottom 87.5% 87.5%

Conventional Concrete

  • Top 25% 25%
  • Middle 50% 50%
  • Bottom 87.5% 87.5%


Green Umbrella FiberMacX is a uniquely designed concrete fiber that can be used as a powerful reinforcement. FiberMacX can be used as a replacement for wire mesh and light rebar.

Features and Benefits


• Enhanced durability, fatigue and flexural performance
• Provides secondary reinforcement with equal strength to WWM and light rebar
• Three dimensional reinforcement to prohibit cracking
• Alkali resistant & non-corrosive
• Reduced in place cost
• High impact resistance and wear resistance
• 4x Macro fiber count
• Excellent finishability

Additional Features & Benefits

• FiberMacX added to concrete mechanically locks in the fresh concrete matrix, controlling cracking.

• FiberMacX provides secondary reinforcement which helps eliminate crack formation that causes permanent weakening of the resultant concrete.
• With FiberMacX, concrete is less permeable, has a smooth surface, is highly impact resistant and improves your Bottom Line.
•Replaces 6 x 6, W1.4 x W1.4 (8 gauge welded wire fabric) and in some cases rebar
•Increased fiber-count and improved residual strength

Design with Isotropic Fiber and

Avoid Any Shift in Reinforcement

Learn more about our products

Product Download

FiberMacX Technical Data Sheet
FiberMacX Safety Data Sheet

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