• concrete bowed walls supported with carbon fiber

    Fortress 4000 Epoxy for Carbon Fiber

    Concrete Reinforcement

    NextStar is your specialist in Carbon Fiber for poured concrete and block walls. Carbon fiber is an excellent choice for bowed or walls that need extra strength. Easy to apply and stronger than steel.

  • Fortress 4000 Epoxy and structural applications

    Certified and Tested Carbon fiber

    Quality Supply

    NextStar concrete crack repair products are of the highest quality along with tested and proven Fortress products with ICC certification.

  • carbon fiber concrete wall kits

    D.I.Y Foundation Carbon Wall

    Carbon Fiber Fabric

    NextStar easy-to-use carbon fiber fabric reinforcement kits that can also be used on irregular shapes.

  • Carbon fiber wall straps fabric for concrete

    Carbon Fiber Staples for Walls and Floors

    Staples & Stitches

    Fortress carbon fiber staples are a preferred product for angle cracking used on foundation walls and concrete swimming pools. They have been used for many years with proven results.

  • Concrete reinforcement carbon fiber staples and stitching dogs

    Reinforcement of Concrete with


    Carbon Fiber Stitching and staples are a cost-effective solution to prevent re-cracking of concrete floors and is a preferred solution before any floor coatings are applied.

Fortress 4000 Carbon Guard Epoxy
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Carbon Fiber Epoxy Fortress 4000 450ml with Mixer
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Carbon Fiber Epoxy Fortress 4000 450ml with Mixer
Item Name:

Carbon Fiber Epoxy Fortress 4000 450ml with Mixer

Item #:NX99100
$44.00 USD
 Quantity:  Update QtyAdd to Shopping cart

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Hi Mod Gel 4000 fortress Epoxy for Carbon fiber and Anchoring.

D E S C R I P T I O N :
450 ML total volume 300x150ml cartridge with static mixer for standard size 2:1 dispensing tool. Can be dispensed with a standard application tool with small a cartridge adapter.

The Fortress 4000 epoxy is a specially designed true gel. It borrows marine technology bonding capabilities for carbon fiber, which is one of the hardest substrates to bond to. It combines a viscosity of paste and the wetting capacity of a low viscosity resin. It will cure in the presence of water, even underwater. It is manufactured in a process that provides minimal air entrapment.

  • When combined with vacuum clamping laminate can have less than 1% air entrapment
  • Will not sag on a vertical or overhead application
  • 100% solids no VOC's (volatile organic substances)
  • High tensile and shear capabilities
  •  Ambient cure
  •  Color coded for proper metering
  •  Designed to be fairly ductile to transfer load to FRP
  •  Less than 5% air entrapment


Common Applications

Anchor bolts

Carbon fiber and Kevlar reinforcement bonding to concrete

Use as extra high strength epoxy paste

Use Fortress 4000 adhesive to bond carbon fiber to itself and other materials such as concrete, metal, wood, and many plastics. Fortress 4000 adhesive is highly recommended as a "tack coat" for applying epoxy resin-saturated reinforcement materials to a vertical and overhead substrate such as concrete or steel in seismic retrofit and structural areas upgrades.

Fortress 4000 /Carbon Guard 4000 is a toughened, high-temperature structural epoxy adhesive designed to bond Carbon Fiber to concrete and other materials. It is a two-phase (toughened) epoxy resin produced using an elastomer with a flexible epoxy resin backbone for maximum stress and Fatigue resistance. Fortress 4000 bonds with an immediate high tack consistency and offers a quick cure. 4000 may be applied at ambient temperatures ranging from 55°F (13°C) to 100°F (38°C). The working life at 77° F (25° C) is 60 minutes (working time increases with lower ambient temperatures), with Full cure occurring between 12 - 16 hours depending on the ambient temperature.

Unlike most epoxy adhesives, 4000 adhesive cured at ambient temperatures provides heat
resistance well in excess of most engineering limits with an HDT of 105° C (220°F ). The material mixes at 100:35 by weight (resin to hardener). The convenient color-coded components form a uniform color when properly mixed. Fortress 4000 adhesive is designed for high production meter/mix ram dispensing, and it offers speedy application rates, although highly thixotropic. 4000 adhesive is solvent-free and 100% solids.


Fortress 4000 adhesive is formulated to improve the bond between the epoxy adhesive and cured carbon fiber laminate. This formulation technique results in increased physical properties due to better surface wetting and increased bond strength to carbon fiber. In effect, the greatest significance of Fortress 4000 is the retention of these physical properties after exposure to heat, water and cycle fatigue, and adverse environmental reagents such as salt spray, acid rain, etc. This technology offers the fabricator not only a superior adhesive today, but more importantly, increased product life and long-term durability.


All surfaces should be mechanically abraded, or, in the case of fiberglass 1aminate(s), the use of peel ply on the bonding surfaces is acceptable. All dust, grease, and standing water must be removed prior to the application of Fortress 4000 Adhesive.


  • Gel at ambient + 8hours at 120°F
  • Gel at ambient + 6hours at 160°F
  • Gel at ambient + 7days at ambient

Packaging:Fortress 4000 Adhesive is available in 450ml Tubesets




Hi Mod Gel 4000 Fortress Epoxy for carbon fiber and anchoring. Toughened high strength epoxy used with carbon fiber staples and kevlar grid straps 450 ML dual tube.
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