Cargo boxes allow you to transport many essentials on the roof of your car, and they’re perfect for anyone who likes to go camping, skiing, or swimming frequently. But since the boxes are exposed to the outdoor elements, you’re probably wondering if they’re waterproof.
Cargo boxes are usually not waterproof. They are often labeled as water-resistant, meaning they can withstand water to a certain degree. However, water resistance isn’t a guarantee that your items within the box will remain fully dry, but they won’t be drenched.
This article will discuss the water resistance of cargo boxes in more detail and list a couple of cargo boxes for your things, so keep reading to learn more!
Can Items Get Wet in a Cargo Box?
Items can sometimes get wet in a cargo box. It’s essential to read product descriptions and reviews before purchasing because some boxes will be better than others at keeping water out.
Since many cargo boxes are water resistant, they offer very minimal protection, and while they can stop water from getting in, it’s not a guarantee.
One of the main ways water can get into a cargo box is through gaps if you don’t close the lid securely. There may also be gaps where there are screws or other things, in which case there’s not much you can do.
If you’re worried about items getting wet in a cargo box, consider wrapping or covering them in a waterproof material for an extra layer of protection.
You can avoid this extra layer if you’re not expecting heavy rains by purchasing durable, good-quality, and water-resistant cargo boxes that are currently on the market.
3 Best Water-Resistant Cargo Boxes
If you’re interested in buying a new water-resistant cargo box but aren’t sure which one to choose, I’ve compiled a list of the 3 best ones below. So, be sure to check them all out if you don’t know where to start!
Best Overall: Thule Force XT Sport Roof Box
The Thule Force XT Sport Roof Box has a dual-side opening, so it’s easily accessible no matter which side you’re on. It is not waterproof, but according to the Thule website, all their cargo boxes are weather resistant, meaning they can handle light precipitation without water getting into the box.
This is standard for many cargo boxes, so it’s nothing to be concerned about. Additionally, this cargo box fits a wide variety of vehicles and mounts easily. Since it’s a hard case, it’s easy to clean and more likely to keep water away (as opposed to a soft cargo box).
Some water may get in through the clasps on this cargo box, mainly if it’s a heavy rainshower, but you can use waterproof tape to block it out.
Best for Gear Capacity: Yakima CBX 18 Roof Box
The Yakima CBX 18 Roof Box has a sleek design, perfect if you want something functional and stylish.
Although it’s on the pricier side, this roof box should last many years and is water-resistant. The box generally keeps the rain out, some water may get in if there is heavy rain or if it rains for long periods. If there is a lot of rain or snow forecast on your trip, it’s best to protect everything with a waterproof cover in the cargo box.
With a gear capacity of 510 liters (135 gallons), this Yakima roof box can hold a lot and is perfect for a group of people (up to five individuals).
Like the Thule Force XT box, the Yakima one also has a dual-side opening, so you can easily access your equipment even if parked at a wall.
Best for Long Items: Thule Motion XT Alpine Roof Box
The Thule Motion XT Alpine Roof Box is another excellent water-resistant choice, particularly if you have long equipment like skis and snowboards because it has a length of 7 foot 10.6 inches (2.4 meters)!
And even with long items in the box, there will likely be space left over for other things. Additionally, it’s easy to mount to the car and makes a clicking noise once correctly installed, making the entire installation process highly efficient.
The cargo box has a glossy finish, making it modern and attractive. And despite its length, it won’t get in the way of your trunk, so you don’t have to worry about fidgeting with it or taking it off to open the trunk door.
Like all Thule cargo boxes, this one is water-resistant rather than waterproof, so you may need to cover your equipment if there is a chance of heavy rain or snow. But you should have little to no issues in light precipitation.
How To Stop Water Getting Into a Cargo Box
As you now know, most cargo boxes (including those from Thule and Yakima) are water-resistant, so they can withstand specific amounts of precipitation. However, you might notice your equipment gets wet even when using an expensive cargo box.
Here are some things you can do to prevent water from getting in.
- Ensure you have the correct cargo box. Before purchasing your cargo box, read the product description to see if it has any water resistance.
- Use waterproof tape to cover gaps. Sometimes, there could be gaps in your cargo box (particularly where there are clasps or screws), which is where water can get in.
- Use a waterproof cover as an additional layer of protection. Although it isn’t ideal because of the added bulk, it will undoubtedly keep your equipment dry.
It’s also good to install a roof rack, as this will raise your cargo box, meaning water can drain easier. It also ensures the weight can be carried efficiently. Some cars have built-in rails, but these are often not strong or tall enough to allow water drainage.
Roof racks can also hold rooftop tents, so it might be worth installing one if you like to camp often.
Since cargo boxes are waterproof, you can go through a car wash with them, but it is not advised. Check out my in-depth guide to learn about the dangers of going through the carwash with a cargo box, and the alternatives.
Conclusion
Cargo boxes are usually not waterproof, but most are water-resistant. If there is light precipitation, the cargo box should remain dry inside. But in heavy rain or snow, expect some water to get in.
Consider covering your equipment with waterproof material to ensure it stays dry in harsh weather conditions.