Enclosed vs Open Trailers: A Comprehensive Comparison
- Brenda J
- Nov 20, 2024
- 6 min read
Updated: Nov 21, 2024
Key Takeaways:
Enclosed trailers offer superior protection from weather and theft
Open trailers are generally lighter and more fuel-efficient
Enclosed trailers typically have a longer lifespan due to better protection
Open trailers are more versatile for oversized or oddly-shaped loads
Enclosed trailers require less maintenance but are more expensive upfront
Introduction
G'day, mates! As a trailer expert with over 20 years in the business, I've seen my fair share of both enclosed and open trailers. Today, we're going to dive deep into the differences between these two popular trailer types. Whether you're a tradie looking to protect your tools or a weekend warrior hauling your toys, understanding these differences is crucial for making the right choice.

7×5 Fully Enclosed Trailer (Cargo / Luggage)
Fully Enclosed | Hot Dipped Galvanised
Construction Materials: Built to Last
When it comes to durability, the construction materials used in enclosed and open trailers play a big role.
Enclosed Trailers: These bad boys are typically made from heavy-duty materials like galvanized steel or aluminum. The walls and roof provide an extra layer of protection, and many models come with a protective coating to fight off rust and corrosion. I once had a customer who'd been using his enclosed trailer for 15 years in the harsh Outback conditions, and it still looked almost new!
Open Trailers: While open trailers are also built tough, they're more exposed to the elements. They're often made from steel or aluminum as well, but without the protective shell, they can be more susceptible to wear and tear over time.
Weather Protection: Battling the Elements
In Australia, we know a thing or two about extreme weather. Let's see how our trailer types stack up against Mother Nature's fury.
Enclosed Trailers: Think of these as your cargo's personal bodyguard against the weather. Rain, hail, scorching sun - your gear stays protected. I once transported a wedding cake 300km in 40°C heat using an enclosed trailer. It arrived at the reception looking perfect - try doing that with an open trailer!
Open Trailers: These trailers leave your cargo exposed to the elements. While this can be fine for weather-resistant items, it's not ideal for sensitive equipment or materials that can be damaged by moisture or UV rays.
Security Features: Keeping Your Gear Safe
Security is a major concern for many trailer owners. Let's see how our contenders measure up.
Enclosed Trailers: With lockable doors and a fully enclosed structure, these trailers offer top-notch security. Your gear is out of sight and protected from prying eyes and sticky fingers. One of my tradie customers used to lose a tool every other job site until he switched to an enclosed trailer. Problem solved!
Open Trailers: While you can secure items with tie-downs and tarps, open trailers are inherently less secure. Your cargo is visible and potentially accessible to thieves.

7×5 Fully Enclosed Trailer (Cargo / Luggage)
Fully Enclosed | Hot Dipped Galvanised
Versatility: One Size Fits All?
When it comes to versatility, both trailer types have their strengths.
Enclosed Trailers: These are like the Swiss Army knives of the trailer world. With customizable interiors, you can set them up for anything from tool storage to mobile workshops. I've even seen one converted into a mobile coffee shop!
Open Trailers: Open trailers shine when it comes to hauling oversized or oddly-shaped items. Need to transport a small excavator or a stack of long timber? An open trailer is your go-to choice.
Maintenance Requirements: Keeping Your Trailer Tip-Top
Nobody wants to spend all their free time maintaining their trailer. Let's see how our two types compare in the maintenance department.
Enclosed Trailers: While they require regular cleaning and checks, enclosed trailers generally need less frequent repairs related to structural integrity. The protective shell does a lot of the heavy lifting in terms of maintenance.
Open Trailers: These trailers may require more frequent inspections and maintenance due to their exposure to the elements. Rust and wear can set in more quickly if not properly cared for.
Longevity: The Long Haul
When you're investing in a trailer, you want it to last. Here's how enclosed and open trailers stack up in the long run.
Enclosed Trailers: Thanks to their robust construction and protective features, enclosed trailers often have a longer lifespan. With proper care, they can easily last 15-20 years or more.
Open Trailers: While open trailers can also have a long life with proper maintenance, their exposure to the elements can lead to quicker deterioration if not cared for properly.
Weight and Fuel Efficiency: The Light and Heavy of It
Weight is an important factor to consider, especially if you're towing frequently.
Enclosed Trailers: These trailers are generally heavier due to their additional structure. This can impact fuel efficiency and may require a more powerful towing vehicle.
Open Trailers: Open trailers are typically lighter, which can mean better fuel efficiency and easier towing, especially for smaller vehicles.

7×4 Fully Enclosed & Luggage Trailer (Cargo / Luggage)
Fully Enclosed | Hot Dipped Galvanised
Cost Considerations: Balancing the Budget
Let's talk dollars and cents - an important factor for any trailer purchase.
Enclosed Trailers: These generally come with a higher upfront cost due to their more complex construction and additional features. However, the added protection can mean lower costs in the long run for maintenance and potential cargo damage.
Open Trailers: Open trailers are usually more budget-friendly initially. They're simpler in design and require less material to construct. However, you might end up spending more on tarps, tie-downs, and potentially replacing weather-damaged items.
Aerodynamics: Smooth Sailing
Aerodynamics can play a role in your towing experience and fuel efficiency.
Enclosed Trailers: While heavier, enclosed trailers often have a more aerodynamic design, which can help offset some of the weight-related fuel efficiency issues.
Open Trailers: Open trailers can create more drag, especially when carrying items that stick up above the sides. This can impact fuel efficiency on longer trips.
Resale Value: Getting Your Money's Worth
When it's time to upgrade or sell, resale value becomes important.
Enclosed Trailers: These often hold their value better due to their durability and protective features. A well-maintained enclosed trailer can fetch a good price on the second-hand market.
Open Trailers: While still valuable, open trailers may depreciate faster due to their exposure to the elements and potential wear and tear.
Customization Options: Making It Your Own
Both trailer types offer customization options, but in different ways.
Enclosed Trailers: The sky's the limit with enclosed trailers. You can add shelving, workbenches, electrical systems, and more. I've seen enclosed trailers turned into mobile offices, workshops, and even tiny homes!
Open Trailers: While not as versatile in terms of interior customization, open trailers can be fitted with various accessories like toolboxes, bike racks, and specialized tie-down systems.
Conclusion: Making the Right Choice
In the end, the choice between an enclosed and open trailer comes down to your specific needs. If you're hauling valuable, weather-sensitive equipment or need extra security, an enclosed trailer is probably your best bet. If you frequently transport oversized items or prioritize fuel efficiency and lower upfront costs, an open trailer might be the way to go.
Remember, there's no one-size-fits-all solution. Consider your specific needs, budget, and long-term plans when making your decision. And don't forget - a well-maintained trailer, whether open or enclosed, will serve you well for years to come.
Frequently Asked Questions
Are enclosed trailers worth the extra cost? For many users, yes. The added security, weather protection, and longer lifespan often justify the higher initial investment.
Do I need a special license to tow an enclosed trailer? In most cases, no. However, always check your local regulations, especially for larger trailers.
Can I convert an open trailer to an enclosed one? While possible, it's often more cost-effective and reliable to purchase a purpose-built enclosed trailer.
How much more fuel will I use towing an enclosed trailer vs an open one? This varies depending on the specific trailers and your vehicle, but generally, you might see a 10-20% increase in fuel consumption with an enclosed trailer.
Can I use an enclosed trailer for camping? Absolutely! Many people convert enclosed trailers into comfortable camping setups.
Comments