Stability Comes from Quality Cast Parts

Is your dock actually built for long-lasting stability?

Many dock parts are stamped or extruded. The problem with these parts is that they tend to bend, slip, or break; this causes instability, especially with bottom plates and crossarm clamps. Alumi-Span uses cast parts, which don’t flex over time like stamped or extruded parts. Using cast parts for your dock eliminates a big instability issue.

Why the Lakebed Matters

The bottom of the post has to sit on something solid. On firm sand or gravel, a post can sit directly on the bottom plates. But on soft, mucky, or silty bottoms, you need more bearing surface. That's where permanent dock bases come in.

• Permanent augers screw into the bottom like a giant corkscrew, anchoring the post in place so it can't shift, even in soft sediment or current.
• Mud boards spread the post's weight over a wider footprint, so the post doesn't sink into soft bottom over time.

For a dock you plan to leave in year-round, an anchored base is worth the extra effort. For seasonal docks, a mud board or well-seated post can be plenty; the key is knowing what your bottom is made of before you set the first section.

Learn more in our latest article.

Need to Know how to Build a Boat Dock?

Alumi-Span has been building docks since 1956, and we sell everything down to the nuts and bolts, so you can upgrade your existing dock piece by piece instead of starting over.  

If you need instructions on how to build a boat dock, or if you’re just not sure what your dock needs, give us a call at 855-523-2444 or click here to submit a contact form — we’re more than happy to help you match the right parts to your dock.

Stability Starts Below the Deck

Does your dock feel loose or unstable?

Every dock section you walk on transfers its weight to a handful of support points: the posts. Those posts carry the load down to the lakebed, and the crossarms spread the load between them so no single post is doing all the work. When this system is sound, your dock stays level and doesn't bounce or sway underfoot. When it isn't, you feel it in every step — and over time, a wobbly dock puts stress on the connections and deck sections a
bove it.

The good news: you don't have to replace the whole dock to fix the problem. Most stability issues are solved at the support level.

Start with the Right Posts

Posts are the backbone of the dock, so size matters. Alumi-Span's standard is 2" OD aluminum dock posts, which they recommend for all new applications. They're lighter and last longer than the older 1.9" OD posts found on many existing docks. If you're building new, go with 2". If you're retrofitting an older dock, measure carefully before ordering, because the two sizes don't mix.

Aluminum posts are the best choice for a few reasons: they won't rot like wood, they resist corrosion better than steel, and they are lighter for pulling in and out season after season. Many Alumi-Span docks are still in service after more than 50 years, and that longevity starts with the posts.

Don't Forget the Crossarms

Posts hold the dock up, but crossarms and platform trusses hold the posts together. They tie adjacent posts into a rigid frame, which is what keeps the whole structure from racking or twisting when a wave hits or when someone steps on the edge of the deck. If your dock has always felt a little "loose," missing or undersized crossarms are often the culprit.

Learn more in our latest article.

Need to Know how to Build a Boat Dock?

Alumi-Span has been building docks since 1956, and we sell everything down to the nuts and bolts, so you can upgrade your existing dock piece by piece instead of starting over.  

If you need instructions on how to build a boat dock, or if you’re just not sure what your dock needs, give us a call at 855-523-2444 or click here to submit a contact form — we’re more than happy to help you match the right parts to your dock.

How to Turn Your Dock into the Perfect Gathering Space

A dock can be much more than a place to tie up your boat. With thoughtful planning, it can become the
center of summer entertainment—a place where family and friends gather to enjoy meals, relax by the water, and make lasting memories.

Most people think of a dock as a place to tie up your boat. As much as a dock is useful for that purpose, many people fail to imagine the possibilities you can do with your dock. With careful planning, you can turn your dock into a gathering place on the water. This can be a space where memories are made with the people you love. 

When you design your party dock, you should think about how you are going to use the space for gatherings. Having a wide platform gives people their own space, this makes relaxing on the dock comfortable. You should think about designated areas for swimming, fishing, or launching kayaks to maximize the docks use. Adding features like a swim ladder, dock lighting, or shaded seating can also make your dock more enjoyable from sunrise to sunset.

Why Make a Party Dock?

You might ask yourself, what’s the purpose of a party dock? Having a gathering space on your dock is a comfortable way to relax and unwind on nice summer days. Taking the boat out is a fun way to enjoy summer however that takes work. You have to start your boat, untie it from your dock, check to make sure you have all your lights and that everyone on board is safe. With a party dock, the only work you need to do is pull up a chair! Sometimes we want to enjoy the water without doing all of that work. A party dock is an easier and more comfortable way to enjoy the water. 

Read more in our latest article.

Ready Design Your New Dock? 

Whether you're gathering with family for a holiday weekend, enjoying coffee by the water each morning, or hosting neighbors for an evening on the lake, a thoughtfully designed dock becomes an extension of your home. A party dock isn’t just a gathering space, it’s an investment. 

We've been helping waterfront property owners create durable, customizable aluminum dock systems since 1956. Our American-made docks are built to withstand Michigan's climate while providing the flexibility homeowners need to design spaces that fit their lifestyle. Click here to use our boat dock design tool to plan your perfect dock.

If you're exploring Michigan dock designs, we'd love to help you design a dock that's built for entertaining, relaxation, and years of unforgettable memories. Call 855-523-2444 or submit a contact form here to get started!

5 Features Every Party Dock Should Have

Having a dock that can support social gatherings enhances your life on the water. Hosting friends and
family on your dock should be a point of pride. Your party dock will always be there for you to relax on, especially if you don’t feel like taking out the boat. 

Anytime you're hosting family gatherings, enjoying a quiet evening by the water, or spending weekends with friends, the right dock can make all the difference. Having the essentials is your first step to a great party dock.

Consider including these five features in your party dock:

• A Spacious Platform – Give guests plenty of room to relax, socialize, and move around comfortably.
• Comfortable Seating – Benches or weather-resistant outdoor furniture create a welcoming place to gather.
• Shade Options – Umbrellas or canopies help keep everyone cool during warm summer days.
• Safe Access – Non-slip surfaces, ladders, and proper lighting make your dock safer for family and guests.
• Room for Recreation – Design your dock with space for swimming, fishing, paddleboards, or tying up your boat.

A thoughtfully planned dock should balance entertainment, functionality, and durability. With a modular aluminum dock system, it's easy to customize your layout and expand it over time as your needs change.

Read more in our latest article.

Ready Design Your New Dock? 

Whether you're gathering with family for a holiday weekend, enjoying coffee by the water each morning, or hosting neighbors for an evening on the lake, a thoughtfully designed dock becomes an extension of your home. A party dock isn’t just a gathering space, it’s an investment. 

We've been helping waterfront property owners create durable, customizable aluminum dock systems since 1956. Our American-made docks are built to withstand Michigan's climate while providing the flexibility homeowners need to design spaces that fit their lifestyle. Click here to use our boat dock design tool to plan your perfect dock.

If you're exploring Michigan dock designs, we'd love to help you design a dock that's built for entertaining, relaxation, and years of unforgettable memories. Call 855-523-2444 or submit a contact form here to get started!

Dog-Friendly Boat Dock Accessories

If your dogs love the water as much as you do, making sure your dock is canine-friendly should be a top
priority. Here are three essential accessories that will help make your dock safe for four-legged family members:

Dock End Bumpers – Cover open dock ends with bumpers to prevent accidental slips into the water. They come in a range of colors, so you can add a little personality while keeping your pup safe.

Stairs – Give your dog a safe way to get in and out of the water. Made in the USA for strength and durability, dock stairs are a must-have for any dog-friendly setup.

Safety Corners – Smooth out sharp transitions with corner sections that let your dog move from the dock to platforms without jumping over open gaps, reducing the risk of injury.

Learn more in our latest article.

Ready to Design a Dog-Friendly Michigan Boat Dock?

Whether you're building from scratch or upgrading an existing dock, we'll help you and your pup enjoy the lake to the fullest this season! Click here to use our boat dock design tool to plan your perfect Michigan dock. Have questions or want to place an order? Call 855-523-2444 or submit a contact form here.

Dog-Friendly Dock Building Materials

Before you head out for a day on the lake with your four-legged copilot, here's what you need to know
about dog-safe building materials:

Wood Decking – We hand-select premium lumber during construction, making sure boards are smooth and free of splinters and holes so your dog's paws stay comfortable.

Vinyl & Aluminum Decking – Both options feature built-in tread patterns that provide traction even when wet — no slippery surfaces, but still gentle on paws.

Faux Wood Decking – A maintenance-free option with powder-coated finish and added traction, perfect for dogs of all ages and activity levels.

Quality Cast Parts – Our cast aluminum components are built to resist bending, breaking, and slipping — even with the most enthusiastic dogs on board.

Quality Decking Materials – We use structural-grade aluminum, extruded vinyl, and premium lumber. No cracks, bends, or warping under the weight of excited dogs running and jumping.

Quality Build – Every dock section is built with thick-walled aluminum center beams and side stringers, and weight-tested to ensure safety for the whole family (four-legged members included).

Learn more in our latest article.

Ready to Design a Dog-Friendly Michigan Boat Dock?

Whether you're building from scratch or upgrading an existing dock, we'll help you and your pup enjoy the lake to the fullest this season! Click here to use our boat dock design tool to plan your perfect Michigan dock. Have questions or want to place an order? Call 855-523-2444 or submit a contact form here.

The Advantages of American-Made Boat Docks

A boat dock is an investment in your waterfront property and your family's enjoyment of the lake. When
evaluating dock options, consider the benefits of choosing a dock manufactured in the United States:

Quality Materials

American manufacturers are often known for using high-quality materials designed to withstand demanding conditions. Stronger components and better craftsmanship can help extend the life of your dock while reducing maintenance needs.

Better Customer Support

When your dock is built by a domestic manufacturer, it's typically easier to obtain replacement boat dock parts, accessories, and technical assistance. Instead of dealing with overseas suppliers and long shipping delays, you can often get the support you need quickly and efficiently.

Long-Term Value

While some imported docks may offer a lower upfront cost, a well-built American dock often provides better long-term value through durability, reliability, and reduced maintenance requirements. This means that ultimately, it costs LESS than an imported dock that needs constant repairs or replacements. 

Supporting American Workers

Purchasing American-made products helps support manufacturing jobs and family-owned businesses that continue to invest in innovation, quality, and customer service. Alumi-Span Docks is one of those family-owned businesses!

Learn more in our latest article.

Choose Michigan-Made Boat Dock Parts

As you celebrate the month of Independence Day on the water this year, take a moment to appreciate the value of products made right here in America!

Whether you're upgrading an existing dock, replacing worn-out sections, or planning a completely new dock system, choosing American-made Alumi-Span products can provide lasting value for your waterfront property.

If you’re ready to place an order, or even if you just have a question, call 855-523-2444 or submit a contact form here.