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FRP | Fiber-Reinforced Polymer



Your Full-Solution Partner for FRP Composite Strengthening Systems™

Simpson Strong-Tie Composite Strengthening Systems (CSS) provide efficient fiber reinforced polymer (FRP) solutions for the structural reinforcement and strengthening of concrete, masonry and timber structures in need of repair or upgrade.

What is FRP? Composite Strengthening Systems Overview

Fiber-reinforced polymer (FRP) systems are simply defined as high-strength and lightweight reinforcements created by combining carbon (CFRP) or E-glass fibers with a polymer material. The performance characteristics of FRP strengthening have become increasingly popular in construction and retrofit applications, specifically in aging, damaged or overloaded concrete structures.

FRP Advantages

Steel plate bonding, concrete section enlargement and steel jacketing have been the renovation methods of choice for decades, yet corrosion, bond degradation and installation difficulty, time, and cost are consistent challenges to overcome, and the resultant retrofit generally adds weight, reduces usable space, clearance, or both.

FRP Strengthening Applications

The primary benefit of FRP systems versus traditional retrofit methods is that significant flexural, axial or shear strength gains can be realized with an easy-to-apply composite that does not add significant weight or mass to the structure. Many times it is the most economical choice given the reduced prep and labor costs and may be installed without taking the structure out of service.

Repair and Strengthening of Concrete Structures                 

Composite Strengthening Systems may be used to increase the strength of slabs, slab openings, beams, walls, new wall openings, columns, silos, chimneys, piles and pier caps. FRP may be applied to strengthen reinforced concrete and pre-stressed/post-tensioned concrete, steel, masonry and timber.

Complimentary FRP Design Services for Engineers & Designers

Leverage our expertise to help with your fiber reinforced polymer strengthening designs. Our experienced technical representatives and licensed professional engineers provide complimentary design services and field support – serving as your partner during the entire project cycle.

A Source for FRP Contractors

FRP contractors count on reliable manufacturing sources for their projects. Simpson Strong-Tie's manufacturing capacity means fast turnaround time of FRP and FRP-related materials for projects.

Request More Info

For complete information regarding specific products suitable to your unique situation or condition, contact us or call (800) 999-5099 to speak with a local technical representative or engineer.

FRP Resources

New 44 oz. Carbon Fiber Fabric

The thickest and strongest FRP on the market, our 44 oz. fabric has an innovative flat weave with a fiberglass cord that allows saturant to absorb more efficiently. Backed by our expert engineering and design support, your concrete restoration projects will be stronger and more reliable than ever.

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FRP Best Practices Series

FRP Webinars

In this free webinar series we dive into some very important considerations including the latest industry standards, material properties and key governing limits when designing with FRP.

Watch Advanced FRP Design Principles Now Watch FRP Strengthening Design Fundamentals Now

CSS Training Center

CSS Training Center
CSS Training Center

Certified Contractor Network

Certified Restoration Contractors

Contractors need an edge in the highly competitive restoration market. The Simpson Strong-Tie Certified Restoration Contractor Network provides valuable tools and benefits to help you grow and enhance your business.

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CSS Flier

Download the CSS flier F-R-CSS16

A flier designed to assist in the specification and installation of Composite Strengthening Systems, including fabrics, precured laminates and complementary products.

Download F-R-CSS16 Spanish Flier F-R-CSS16SP Order by Mail