Cleaning a roof cargo box might not seem like a big deal, but getting it wrong can mess up your gear and the box itself. Over time, dirt, grime, and even UV damage can wear down the surface of your roof box, reducing its lifespan and making it look bad. If you’re carrying luggage on long trips, it’s even more crucial to keep things clean and working well. Here’s how you can make sure your roof cargo box stays in top condition.
Why Regular Cleaning Matters
If you don’t clean your roof box, debris can settle into small cracks or scratches, which eventually leads to permanent damage. Mold and mildew can also grow on it, especially if you leave it wet after a trip. These boxes are exposed to harsh elements, such as salt from the roads during the winter and bird droppings, which can be acidic and degrade the box material over time.
According to an article on a leading maintenance forum, “Bird droppings and tree sap can actually cause discoloration on your roof cargo box if not cleaned off promptly. They leave behind residues that can permanently stain.”
Gather Your Cleaning Tools
You don’t need special equipment to clean a cargo box, but a few basic items will make the job easier. Some of the things you’ll need:
- Mild soap or automotive cleaner
- Soft sponge or microfiber cloth
- Bucket of warm water
- Old toothbrush for scrubbing small areas
- Plastic protectant spray (optional)
- Soft-bristled brush
Make sure to avoid abrasive brushes or harsh chemicals as these can scratch the surface of the box. If you can, use a cleaning product designed specifically for plastic materials, as most roof boxes are made from ABS or similar plastics.
Step-by-Step Cleaning Process
1. Remove the Box from the Roof
It might seem like extra work, but taking the cargo box off your car makes the cleaning job much easier. When it’s off the roof, you can clean it from all angles and avoid damaging your car’s paint in the process. Lay it down on a flat surface and make sure you can move around it freely.
2. Rinse the Box Thoroughly
Start by rinsing the entire box with clean water. This will remove any loose dirt, debris, or leaves that could scratch the surface when you begin scrubbing. If you live in an area with hard water, try to use filtered water or rinse off the excess water quickly to avoid any mineral build-up on the box.
3. Wash with a Mild Soap Solution
Mix a small amount of mild detergent with warm water in a bucket. Apply this with a soft sponge or microfiber cloth. Clean in circular motions to avoid streaking. For stubborn stains like bird droppings or dried mud, use an old toothbrush or soft-bristled brush to gently scrub them off.
Important Tip: “Avoid using dish soap as it can dry out the plastic,” recommends a leading roof box manufacturer. Stick to mild car soap or a solution made for plastics.
4. Rinse Off the Soap
Once you’ve washed all areas, rinse the box with clean water. Make sure you remove all soap residue. Leftover soap can dry up and leave marks, which will be hard to remove later.
5. Dry the Cargo Box
Let the box air dry completely, or use a clean microfiber towel to speed up the process. Water spots can form if left to dry naturally, especially in direct sunlight, so drying it with a towel may give a better result.
How to Deal With Stains and Tough Grime
If there’s still grime after a basic wash, you’ll need to go in a bit deeper. For things like tree sap or oil stains, use a specific cleaner made for plastic. Don’t use solvent-based cleaners as these can weaken the material over time.
For mildew or mold, mix a solution of water and white vinegar and apply it to the affected area. Let it sit for a few minutes, then scrub with a soft cloth. This method is effective for removing spores and preventing new ones from forming.
Applying Protective Coating
After cleaning, you can apply a plastic protectant to help keep the box looking new. These sprays not only enhance the appearance but also add a layer of UV protection, preventing the plastic from fading. Brands like 303 Aerospace Protectant are highly recommended by professional detailers. Make sure to follow the instructions carefully when applying.
One user on a well-known auto forum mentioned, “I’ve been using plastic protectants for years on my roof box, and it still looks great after several long trips.”
Tips for Preventing Future Dirt Build-up
- Regularly Clean: Make it a habit to clean the box after each long trip, especially if you’ve been driving through rough weather or dirty roads.
- Store Indoors: If possible, store your cargo box indoors when not in use. This keeps it away from weather damage, dust, and dirt.
- Cover the Box: If outdoor storage is the only option, consider investing in a cover for your roof cargo box. A simple tarp can make a big difference in protecting it from UV rays, rain, and snow.
Common Mistakes to Avoid
Many people make the mistake of using high-pressure washers or power tools to clean their roof boxes. This might seem like a faster option, but it can force water into the seals or damage the surface. Stick to manual cleaning methods.
Also, never use ammonia-based cleaners, which can break down the plastic. According to a plastics expert group, “Ammonia-based cleaners have been shown to cause microscopic cracks in ABS plastics over time, leading to structural weakness.”
Conclusion
Maintaining your roof cargo box doesn’t need to be a hard task, but doing it right ensures you’re getting the most out of it. Regularly cleaning and storing it properly can help extend its life, prevent damage, and keep your gear protected. With a few simple tools and the right steps, your roof cargo box will stay in good condition for many trips to come.
For more detailed cleaning solutions, check your cargo box’s manufacturer manual or visit trusted forums and resources to get real-time updates from users who have tackled similar problems.
