High-Performance Carbon Fiber Enhanced Boat Bunk Beams

CarbonBunks™ are the new, high-tech dry stack storage bunk beam solution that ends the continuous replacement of plain lumber boards. These beams are simply better for the boat, better for the customer, and better for your marina’s bottom line.

Pair of CarbonBunk carbon fiber enhanced bunk beams
Patent Pending

New. Better. Different.

CarbonBunks are engineered to outperform using advanced CarbonBar™ material that adds strength and rigidity with proprietary high-tech components that work together as a robust system packed with performance features and benefits for marinas.

CarbonBunk beam anatomy: top cap, engineered LVL core, side protection, CarbonBar reinforcement, bottom cap, end cap
Ground Stands
Boat on a CarbonBunks-equipped ground stand
Dry Stack Bunks
Marina dry stack storage rack with CarbonBunks
Service & Wash Stands
Boat on a service and wash stand
Stop Using Plain Lumber

Modernize Outdated Storage Infrastructure

Boat stored on a modernized dry stack storage rack

Upgrade your marina dry stack storage infrastructure to eliminate the hassle, problems, high cost and wasted labor of the continuous replacement of plain lumber boards with inferior coverings.

Weathered, cracked plain lumber bunk board

Plain lumber boards are a constant problem. They are cheap to buy but expensive to own, bad for business, wasteful, and unsustainable.

CarbonBunks are the smart choice if you are building a new dry storage building, installing an outdoor rack, revitalizing an existing facility, need robust beams for service racks — or want to stock a supply to replace plain boards as they fail.

Call us today at (833) 423-7726 to modernize your outdated storage infrastructure, discuss a new construction project, or place an order to stock CarbonBunks to replace plain lumber boards as they fail.
Preferred by Marina Pros

Proven Strength & Performance at Port 32 Marinas

“

They hit a home run out of the park with these carbon fiber enhanced bunk beams. It’s not just big boats that put stress on rack bunks; smaller boats can concentrate the load right in the middle of the span. These are innovative, durable, better than lumber boards and a real game changer for efficient marina operations.

— Matt Domke, General Manager, Port 32 Marinas
Superior in Every Respect

Product Benefits that Improve Marina Operations

Strong

Unidirectional carbon fiber composite increases load capacity by 50%, and reduces weight by 40%.

Durable

Protects from saltwater, harsh weather, UV rays, breakage, and abrasive debris trapped in carpet.

Failure Free

Eliminates warping, cupping, knots, splitting, rotting, insect damage, and hull scratches.

Installation Ready

Requires no cutting, routing, beveling or installation of carpet, PEM, or inferior plastic rails.

Looks Great

Upgrades facility appearance with a clean, high-tech profile; on-product marina branding available.

Long Lasting

Advanced material science and engineering eliminate all potential failure points to last indefinitely.

Safer

Reduces hazardous elevated work to improve staff safety, while protecting vessels to lower liability risks.

Sustainable

No old growth timber, uses less wood, made with recycled materials, less waste to landfills, and lower carbon emissions.

Less ExpensiveLasts indefinitely with a better ROI by eliminating the wasted money, time, and effort to constantly replace failed boards and worn-out carpet.
Validated Results

Comparative Strength Testing

Unidirectional carbon fiber composite is a highly advanced material used to add strength and reduce weight for many high-tech industries like aviation, automotive, aerospace, energy, and infrastructure.

Technical testing performance comparisons show why the increased strength with decreased deflection of CarbonBunks compared to plain lumber boards makes a big difference for daily performance and long-term durability.

Port 32 Marinas: the 53-foot, 43,500 lb HCB Sueños resting on a CarbonBunks-equipped rack
A treated lumber board split apart under load in the test press Vertical deflection test chart comparing CarbonBunk beams to treated lumber
50%
Stronger
40%
Lighter
40%
Less Deflection
The Right Beam for Each Bunk

Solution Fit & Cost Optimization

CF Span works with customers to evaluate detailed designs for dry stack storage systems including capacity, configuration, mounting methods, load limits for each level, berth lengths, and typical boats.

We utilize these specifications to fit the correct beam for each bunk to optimize the configuration for the entire facility and right-size costs.

We work with marina storage builders and operators to fit the right beams for ground stands and rack bunks at every level.
Schedule a meeting to discuss your project and review share design specifications to get the right performance fit and cost-optimized solution for your unique needs.

2026 Product Catalog

CarbonBunks
Dry Stack Storage Boat Bunk Beams
CarbonBunk 55 beam profile

CarbonBunk 55

2.5″ × 13″

LengthRetailIntro
16′$619$563
20′$773$698
24′$928$836
Max Load 55,000 lbs.
CarbonBunk 45 beam profile

CarbonBunk 45

2.5″ × 13″

LengthRetailIntro
16′$542$491
20′$677$611
24′$813$737
Max Load 45,000 lbs.
CarbonBunk 30 beam profile

CarbonBunk 30

1.75″ × 13″

LengthRetailIntro
14′$381$347
16′$436$395
20′$544$491
Max Load 30,000 lbs.
CarbonBunk 20 beam profile

CarbonBunk 20

1.75″ × 13″

LengthRetailIntro
14′$331$302
16′$378$341
20′$473$428
Max Load 20,000 lbs.
Wet Lift or Dry Stack Storage Boat Bunk Beams

CarbonBar enhanced on the bottom, great for wet lifts or dry stacks.

CarbonBunk Wet 20 beam profile

CarbonBunk Wet 20

2.5″ × 12″

Outperforms an actual or nominal 4″ × 12″ board.

LengthRetailIntro
12′$283$278
14′$330$323
16′$377$368
Max Load 20,000 lbs.
CarbonBunk Wet 15 beam profile

CarbonBunk Wet 15

2.5″ × 10″

Outperforms an actual or nominal 3″ × 12″ board.

LengthRetailIntro
12′$251$224
14′$293$266
16′$335$302
Max Load 15,000 lbs.

* Boat load recommendations are used to guide product selection. Shipping and taxes are not included. Custom lengths are available on request. Prices subject to change.

Let’s Connect

Ready when you are

Please call us at (833) 423-7726 if you have questions, need a quote, want to order, or wish to discuss your new project to get a performance-fit and cost-optimized proposal.

Become a Distributor

Join our team to stock, sell and supply beams in U.S. regional or international markets.

Disclaimer: The installation of CF Span, Inc. CarbonBunks™ products must be performed by a certified marina technician or structural contractor. Improper preparation or installation can compromise the integrity of the beam or storage rack, which could lead to vessel or property damage, or injury. The manufacturer and its distributors are not liable for any damages, injuries, or losses resulting from the installation, use, or misuse of CarbonBunks™. By purchasing and using this product, you agree to assume all risks associated with its installation, maintenance, and use.

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