Fortress in an innovative manufacture of composite products for the reinforcement of concrete structures. Our Carbon Fiber & Kevlar® products have been used in thousands of commercial and residential projects around the world including interstate bridges, commercial buildings, residential foundations, and much more. Our patented ICC Certified innovation called "Re:Grid" is at the heart of many of our products. It's pre-cured unidirectional carbon fiber, open grid design allows for both unprecedented tensile and bonding strength.