Owens Corning Anti-CRAK HD 12 | 12mm AR Glass Fiber for GFRC and Concrete

Owens Corning Anti-CRAK HD 12

Professional-grade reinforcement. One less thing to source.

The right fiber can make better concrete without making your process more complicated. Owens Corning Anti-CRAK HD 12 is the same 12 mm alkali-resistant glass fiber we've trusted in our own concrete work for years, and now you can order it directly from Kodiak Pro.

Anti-CRAK HD 12 is a high-dispersion AR glass fiber engineered specifically for concrete reinforcement. Its 12 mm fibers disperse uniformly throughout the mix to help control plastic shrinkage cracking, improve flexural strength, and reinforce the concrete matrix with minimal impact on workability.

Why we use Anti-CRAK HD 12

• 12 mm alkali-resistant glass fiber engineered for concrete
• High zirconia content for long-term durability in cementitious environments
• Uniform dispersion throughout the concrete matrix
• Helps control plastic shrinkage cracking
• Improves flexural strength and overall concrete performance
• Low impact on workability
• Will not rust or stain
• Ideal for GFRC, concrete countertops, sinks, furniture, tile, and other decorative concrete

Owens Corning Anti-CRAK HD fibers are manufactured in compliance with ASTM C1666/C1666M and EN 15422, and under the recommendations of PCI and GRCA.

Add it to your mix order and essentially ship it free

Anti-CRAK HD 12 is available exclusively as an add-on to half pallet and full pallet orders of Maker Mix or RADmix.

The fiber bags ride on top of the pallet with your mix, so in most cases there is essentially no additional freight cost for the fibers.

That means no separate supplier, no second shipment, and no extra freight bill. Order your mix and fibers together, receive everything at once, and get back to casting concrete.

How much should you order?

For Maker Mix:
A full pallet requires a little over four 6 kg bags of Anti-CRAK HD 12. We recommend ordering 5 bags per full pallet to make sure you have enough material.

For RADmix:
We recommend ordering 15 bags of Anti-CRAK HD 12 per full pallet of RADmix.

Important Ordering Information

• Available only with half pallet or full pallet orders of Maker Mix or RADmix
• Not available as a standalone shipped product
• Fiber bags are placed on top of the mix pallet for consolidated freight
• In most cases, this means essentially no additional shipping cost for the fibers

Packaging

• Fiber length: 12 mm
• Bag weight: 6 kg (13.23 lb)
• Fiber type: Alkali-resistant AR glass
• Filament diameter: 14 microns
• Specific gravity: 2.68 g/cm3
• Tensile strength: Greater than 1,000 MPa
• Modulus of elasticity: 72 GPa