Floating docks are safe, easy to install, and have a longer lifespan than wood decks, making them an excellent choice for dock construction. When building your dock, you’ll need it to endure a demanding marine environment, withstand extreme temperature changes, and resist deterioration and UV rays.

The dock floats you choose are vital to your dock’s basic foundation; they should boost its structural integrity. The two main dock float designs are foam-filled and air-filled. While both types have pros and cons, let’s weigh foam-filled dock floats vs. air-filled options to determine which one is better for your dock project.

When Should I Use Air-Filled Dock Floats?

If you only need to replace part of your dock, extend it, or add more stability, air-filled dock floats will do the trick. They’re generally more lightweight than foam-filled to deliver flexibility on installation for a project like extending an existing dock. They also tend to be cost-effective.

Advantages of Air-filled Dock Floats

  • They’re lightweight: Air-filled dock floats are typically lighter than foam-filled floats, making them convenient to handle during installation and maintenance.
  • Ease of buoyancy control: Air-filled floats can be adjusted for buoyancy by adding or releasing air, allowing for some level of customization to accommodate varying loads or water conditions.
  • They’re budget-friendly: Generally, air-filled dock floats tend to be less expensive than foam-filled floats, making them a more budget-friendly option for some applications.
  • Minor repairs are straightforward: If damaged, air-filled floats can often be repaired relatively easily by patching small holes or leaks.

Disadvantages of Air-filled Dock Floats

  • Vulnerability to punctures: Air-filled floats are susceptible to punctures from sharp objects or impacts, leading to deflation and compromised buoyancy.
  • Less stability: Air-filled floats may provide less stability compared to foam-filled floats, especially in rough water conditions, as they can be more prone to tipping or rocking.
  • More maintenance requirements: Air-filled floats may require more frequent maintenance to ensure they remain properly inflated and functional over time.

When Should I Use Foam-Filled Dock Floats?

If you are building an entirely new structure, you’ll likely want to start with foam-filled floats.

Polyurethane, a closed-cell foam used for flotation, is strong, water-resistant, puncture-resilient, and doesn’t leach chemicals. While air-filled dock floats are lighter and cost less than foam, with air-filled components, you’ll need to ensure that what you’re buying stands the test of time and the impact of the elements.

Carolina Waterworks, Inc. is proud to offer top-of-the-line installed dock floats made of a thick-walled rotationally molded polyethylene shell that encapsulates expanded polystyrene. The thick polyethylene shell is impact-resistant and will also resist damage from marine life. The thick-walled plastic float case is packed with EPS (Empire Foam Solutions brand foam that is environmentally approved and exceeds all new government regulations. 

Our dock floats have maximum lift capacity for the waterfront, boaters, and marinas.

Advantages of Foam-Filled Dock Floats:

  • Durability: Foam-filled dock floats are generally more durable and resistant to punctures than air-filled floats, as they do not rely on air for buoyancy.
  • Ease of assembly: Foam-filled floats are easy to construct and transition from land to water.
  • Stability: Foam-filled floats often provide better stability, particularly in rough water conditions, as they have a more solid construction that helps to minimize rocking or tipping.
  • Low maintenance: Foam-filled floats typically require minimal maintenance since there is no need to monitor or adjust air levels.
  • Greater longevity: Foam-filled floats can have a longer lifespan compared to air-filled floats, as they are less susceptible to degradation from exposure to sunlight or fluctuating temperatures.

Cons of Foam-Filled

  • Heavier weight: Foam-filled dock floats are generally heavier than air-filled floats, making them more challenging to transport and install.
  • Limited buoyancy adjustment: Unlike air-filled floats, foam-filled floats do not offer the flexibility to adjust buoyancy levels according to specific requirements.
  • Higher initial investment: Foam-filled dock floats are often more expensive than air-filled floats, which may deter some budget-conscious buyers.

Comparing Foam Filled and Air Filled Dock Floats

If you have an existing structure to which you need to add buoyancy, consider adding air-filled floats to your current dock.

However, while they cost a little more, foam-filled dock floats are a better long-term investment in building an unsinkable dock with a sturdy, long-lasting base. They’re easy to assemble, UV and damage-resistant, and eco-friendly with no harmful chemicals.

Which Dock Float is Right for Me?

Selecting the ideal dock floats for your waterfront involves considering a variety of key factors to ensure durability, safety, and suitability to your specific needs, including:

  • Location and climate: extreme weather requires more durable and resilient foam-filled dock floats for harsh conditions
  • Water conditions: air-filled dock floats work best for calm freshwater, whereas foam-filled floats shine in rougher saltwater due to their robustness and better puncture resistance.
  • Dock usage: foam-filled floats, with higher buoyancy and stability, are ideal for docks expected to support heavy loads or high foot traffic, whether for personal recreation or commercial operations.

Dock Float Sizes Available at Carolina Waterworks:

  • 12″ Dock Floats: Perfect for smaller, personal docks with light to moderate usage.
  • 16″ Dock Floats: Ideal for medium-sized docks that accommodate recreational boats.
  • 18″ Dock Floats: Suitable for larger recreational areas or small commercial docks.
  • 20″ Dock Floats: Designed for heavy-duty usage, supporting larger boats or commercial operations.
  • 24″ Dock Floats: The best choice for the most demanding applications, offering the highest buoyancy and stability.

Let Carolina Waterworks, Inc. Help You Choose the Right Dock Float for Your Needs

Whether replacing an existing dock that’s breaking down and dangerous or building a floating dock for the first time, you’ll need dock floats you can trust. Foam-filled dock floats stand out because they do more than just float; they’re crafted to last through storms and still waters alike.

Carolina Waterworks, Inc. is your seasoned and trusted brand partner, helping you maximize your time on the water and minimize the related effort and expense. We are a privately owned manufacturing company with over 30 years of experience in the marine industry. We bring you the best in dock floats, commercial/residential gangways, floating docks, buoys, and Safe Haven drive-on boat and jet ski lifts.

As innovators with the highest quality standards, we provide marine products that are safe and easy to use with minimal upkeep. Call us today for quality marine products and expert water life guidance.  

Which is the better choice – a floating dock or a stationary dock? Carolina Waterworks believes that only YOU have the answer, based on your individual boating needs and environment. To find that answer, and to make a smart buying decision, it is helpful to consider the features of each dock style and see how they align with your priorities. Carolina Waterworks is here to help!

Floating Dock or Stationary Dock: An Introduction

Boat docks, made of various materials such as aluminum, wood, or composites, are placed along banks or shores to help boaters and swimmers make the transition from water to land, and vice versa.

Docks are constructed in two modes: floating and stationary. Stationary docks rest on vertical pilings driven into the lake, river, or ocean floor. Floating docks are buoyed by airtight cubes or drums below the decking, called dock floats. Floating docks are held in place by lines or cables that connect the dock to the shore or the floor or bed of the body of water.

Boaters must choose between constructing a floating dock or a stationary dock on their property. Boating professionals, enthusiasts, and your neighbors along the lake will all offer their opinions, but the decision should be based on your real-world considerations, such as the following.

Consider Your Location: Depth and Traffic

Is your body of water shallow or deep? Or does it fluctuate between the two? A stationary dock can be installed to meet shallow or deep conditions. Water that is too deep can present a problem, however, in that the pilings required begin to get pricey in terms of materials and labor. Water of fluctuating depth can also bring challenges for a stationary dock. When the water level drops, a stationary dock can necessitate a longer climb for boaters and swimmers. When the water rises your dock may be submerged, which results in muddy cleanup and potential damage to any electrical components.

High, low, or in between, a floating dock will adjust with the changing water level. This offers convenient and consistent ingress and egress for the boater and swimmer. However, if the water level drops low enough, the weight of your floating dock could cause stress on your floats if they contact the lake or riverbed. Water that rises too high may cause excess tension on the lines securing your floating dock in place.

Finally, consider the boating traffic. How busy is your waterway? More boats mean more wake, even if they obey the speed limit. The floating dock may pitch and rock, while the stationary dock will barely feel the effect. The same caution also applies in the case of storms and other bad weather.

In short, you may find that a stationary deck is better suited to shallower and more consistent water levels and is less affected by boating traffic. A floating deck may be better for deeper or fluctuating water levels with lighter traffic.

Installation, Maintenance, and Cost

In deeper water, a floating dock could be the less costly option because you will forgo the expense of installing pilings in favor of buoyant dock floats. However, dock floats carry their own costs. Deck size (square footage), materials used, and your expected load will determine the size and number of floats you must purchase for optimum safety.

A stationary dock requires the installation of pilings. These can be costly (especially the deeper you go), typically require professional installation, and sometimes entail environmental red tape due to their more permanent nature.

Another advantage of a floating dock is that installation and maintenance can be much more DIY-friendly than the stationary dock. On the other hand, a stationary dock can last longer with fewer maintenance issues. In fact, some estimates place the lifespan of a floating dock at around 20-30 years, while a stationary dock may last 25-35 years.

Floating Dock or Stationary Dock: Lifestyle Considerations

Finally, think about the ways you and your family interact with the water. Are you a retired couple mainly interested in fishing or an easy circuit around the lake? Or will your dock be full of kids and grandkids, swimming and riding jet skis? Will your boat be in the water all season, or will you haul it out from time to time?

Some less experienced boaters, or people with balance issues, can find it difficult to ingress and egress from a bobbing boat to a bobbing floating dock, and vice versa. As noted previously, a low water level can make your stationary dock harder to reach for younger and older swimmers. As for putting in and hauling out boats and toys, many boaters prefer to drive their craft up onto a boat lift. Most stationary docks can accommodate the addition of a boat lift, while some floating docks cannot.

Are you considering adding a dock to your property, but aren’t sure if a floating dock or stationary dock is the way to go? Begin by making an honest assessment of your location, your budget, and your boating lifestyle. Figure out how a dock will fit your family, not the other way around. Then take your questions and concerns to a qualified dock professional.

Dock Dilemma? Call Carolina Waterworks!

Carolina Waterworks is a quality manufacturer of dock floats, commercial and residential gangways, floating docks, buoys, and Safe Haven drive-on boat and jet ski lifts. We have over 30 years of experience in the marine industry and our docks have been the answer to countless questions raised by boaters looking to enhance their boating experience. We can do the same for you, so contact us today!

Commercial and Residential ramps from Carolina Waterworks feature rugged construction and finely sculpted design. We fabricate them from durable marine-grade aluminum that is corrosion-resistant and requires minimal maintenance. Carolina Waterworks offers a range of decking options, lengths, and widths, and are available in stock or custom sizes. They will arrive at your location complete and ready to install with rollers and a polymer-coated hinge pin.

Ramps from Carolina Waterworks come in various widths and lengths for your convenience whether it is for commercial or residential use.

Ramp Surface Options from Carolina Waterworks

Our ramps are also available in various surface options, including:       

Ramps with Aluminum Decking:

More durable than wood, and at a fraction of the weight of steel, aluminum-deck ramps define long-lasting convenience. Installation and maintenance are quick and easy, as is removal at the end of the season – or when nasty weather threatens.

Ramps with Ipe Decking:

Forget all your fears about wood decking because Ipe (EE-pay) is the tropical king of wood density and hardness! This exotic hardwood species grows tall and strong in the forests of South and Central America. And with its rich coloring and fine to medium texture, Ipe is not just tough and durable (and naturally slip-resistant), but it is also easy on the eye!

Ramps with Poly Decking:

Carolina Waterworks ramps with poly decking are extremely durable and will resist the effects of sun and wear, such as rotting, molding, splitting, twisting, warping, and drooping. Its synthetic non-porous construction is extremely water-resistant. And it will stand up to the kinds of abuse boaters will throw at it, including food stains, chlorine, alcohol, and tanning lotion.

Ramps with Composite Decking

Carolina Waterworks ramps with composite decking will maintain their color without continual repainting and sealing. They maintain their structural integrity without warping or splintering. In addition, because the contents of composite decking consist partly of recycled plastic materials, it earns high marks for sustainability.        

The Carolina Waterworks Promise

At Carolina Waterworks, Inc. we are committed to helping you maximize your time spent on the water and minimize the related effort and expense. Through constant innovations and high quality standards, we provide marine products that are safe, easy to use, and low maintenance. Want to learn more about commercial and residential ramps? Contact Carolina Waterworks today!

Who We Are

Carolina Waterworks is a quality manufacturer of dock floats, commercial/residential gangways, floating docks, buoys, and Safe Haven drive-on boat and jet ski lifts.

We are a privately owned company with over 30 years of experience in the marine industry.

Learn More