To repair roof boxes on a car, start by cleaning the box thoroughly and assessing the damage. Depending on the issue, you might need to fix cracks with adhesive or tape, replace broken parts, or tighten any loose fixtures to ensure a secure fit.
How to Repair Roof Boxes in a Car?
Owning a car is always a superior experience, isn’t it?! There’s no doubt about it! You’ll always feel an extra adventurous feeling by having a car. However, as they get older, things get change significantly. One of the changes can appear in the car’s roof boxes. Further, it can damage over time. But, you can fix it by yourself if you know some basic rules of the vehicle.
Car roof boxes are positioned on the roofs of the automotive and used for storage. Besides, they are exposed to the ingredients and residues. For this reason, their condition vandalizes with time. By following some moves, you can okay them quickly.
In this article, we’ll talk about how to repair roof boxes in the car – some easy steps. Let’s go –
Car Roof Box Repair – Some Simple Steps to fix it
What’s your take on repairing a car’s roof box? Is it too complicated a task?! Absolutely not! The equipment needed for repairing jobs is available in hardware stores. Therefore, you don’t have to take the extra burden on it. Now, let’s check out the procedures for fixing the roof box in the car –
Step 1 – Sand the Place
Find out the crack inside of the car’s roof box. Then, start sanding the whole place around it. But, which element should you use? Our recommendation is coarse-grit sandpaper. The fiberglass will adhere closely to this thing.
Step 2 – Cleanse the Place Properly
It is necessary to cleanse the whole place properly with clean water or alcohol. Otherwise, you can’t expect a strong bond with the roof box.
Step 3 – Heat the Thing!
It’s time to heat up! Allow the propane torch to get over the surface. When the flame can touch the surface, it will erode the area and remarkably enhance the overall adhesion. Therefore, the adhesive’s adhesion improves outstandingly and gets a special coating.
Step 4 – Mix the Epoxy
Now, it’s the mixing time of the epoxy. However, make sure that the percentage is exactly the package suggested. A small batch of epoxy is enough. Then, you have to mix it accordingly. Keep the mixed ingredient on a disposable paper plate.
Step 5 – Apply the Epoxy
Apply a small amount of epoxy to the sanded area of the roof box. After that, place some lightweight fiberglass fabric over the rift. Henceforth, it will be best if you can remove the air bubble from the fiberglass. This is how it can work properly.
Step 6 – Repeating the Procedure
Take another batch of fiberglass and repeat the whole procedure with epoxy one more time. After putting the fiberglass fabric in the wet adhesive, spread the entire thing with a spreader thoroughly. Nevertheless, don’t rush while doing it. Otherwise, things could go wrong.
On the other hand, if there are more layers, keep redoing the process.
Besides, take time to cure for around 10-12 hours. To finish it in a sophisticated way, you can consider painting.
Warning Message – While mixing the epoxy, better wear gloves in your hands. Epoxy can be dangerous to the skin and taking precautions is necessary.
How to Resist the Roof Box Leak in the Car?
There are various reasons that roof boxes can get leaked. To prevent it, you can take some practical measurements. Let’s check out –
- Rust is the common enemy of a vehicle. The rust and corrosion can cause massive damage to the roof box in the car. Therefore, you should clean it regularly.
- The roof area needs to be painted periodically. Yes, cleaning is essential. But, keep remember that just cleaning isn’t enough for your roadster’s roof box. As a result, polishing is a must. This is how a car’s roof box can get protection from rain, snow, extreme heat, and other natural threats.
- Be careful when installing a roof box. Sometimes, the box fails to fit inside of the car correctly. For this reason, substantial damage can happen to the box. So, beware of this and establish the box accurately inside a vehicle.
Some Important Roof Box Safety Tips
A road trip is always enjoyable. But, being stuck in a car for hours with little room for movement can bring an unpleasant situation. That’s why loading up a roof box with belongings can help immensely. Nevertheless, adding a load to the top of the car could be risky.
Therefore, here’s something you have to know before making your entry into the road –
Weight
During making a plan on rooftop packing, it’s better to know the weight limit of the rooftop and vehicle. Do you have to pack a lot of belongings? Hmm. So, knowing the weight could ensure that you’re on a correct path. Remember that being overweight could lead to a severe accident.
Balance
A well-packed roof box generally increases the center of gravity of the car. For this reason, the vehicle can wobble at high speeds. As a result, there’s a big chance the load can fall into it and cause unimaginable problems while driving. So, a balance is needed.
Ensure that the box is well-balanced while it carries your properties.
Installing in the Box
Sometimes, cars come with a roof box. But, if the vehicle doesn’t come with it, you have to purchase and install the product. Moreover, you have to ensure that the box perfectly fits the car. Generally, the roof box comes with a connecting point. Besides, you can join this point with the car.
But, if the point can’t be attached to the car’s roof, it will cause a massive problematic situation. To skip such an unwanted condition, you can take advice from an auto professional.
How to Repair Roof Boxes in the Car? – FAQs
Can the roof box damage my car?
If you can set the box accurately as per the suggestion of the manufacturing company, you won’t face a problem and there’s no chance that the box could damage your car.
What is the best place for a roof box in a car?
Try to distribute the weight equally as possible you can. If you feel that the load is much heavier, you can keep some more oversized items in the backseat of your vehicle. On top of that, you have to ensure adequate airflow around the box. Therefore, the box should stay closer to the back of the car rather than in front.
Final Thoughts
So, this is our discussion on how to repair the roof boxes in the car – some easy steps. Although these formulas are pretty effective for repairing roof boxes, you can consult with a professional if enormous damage occurs. However, we think prevention is the best measurement when it comes to leaking.
Thank you for reading! Until next time, goodbye!
-our editorial board has reviewed this article and has been approved for publication according to our editorial policy.
Best Seller List of Roof Cargo Boxes:
- 18 cubic foot (510 L) internal cargo capacity
- Made from durable UV-resistant ABS material
- Rear opening for easy access away from traffic
- Tool-free mounting hardware for easy installation and removal
- Includes key and lock to secure contents in the box, and the box to your rack
- Fits SportRack Rack Systems, square bars, round bars and most factory racks (check fit guide)
- Dimensions (LxWxH): 63 x 38 x 19 in / 160 x 96.5 x 48 cm
- Min-Max Crossbars Spacing: 23 5/8 - 29 3/4 in (60 - 75.5 cm)
- Max Weight Capacity: 100 pounds (45 kg)
- Secure Travel Solution with Locking Rooftop Cargo Box: Travel confidently knowing your gear is safe! Our rooftop cargo box features a secure locking system (includes two keys) and robust straps, providing peace of mind against theft during weekend getaways or long road trips.
- Effortless Rooftop Cargo Box Installation: Enjoy a quick and hassle-free setup! This rooftop cargo box comes complete with all necessary components and clear instructions, allowing you to spend less time installing and more time adventuring. Experience ultimate convenience without compromising quality.
- Aerodynamic Rooftop Cargo Box Design: Experience a smoother, quieter ride! Engineered with an aerodynamic shape, this rooftop cargo box significantly cuts wind resistance and noise. The result? Improved fuel efficiency and a more enjoyable journey for you and your passengers.
- Spacious 19.4 cu ft Rooftop Cargo Box Capacity: Maximize your storage! Offering a generous 14 cubic feet of space and a 165 lbs weight capacity, this rooftop cargo box provides ample room for all your travel essentials, luggage, or outdoor gear – perfect for families and adventure seekers.
- Universal Fit Rooftop Cargo Box for Cars & SUVs: The ultimate travel companion for most vehicles! Designed for versatile compatibility, this rooftop cargo box fits a wide range of cars and SUVs. Simply check your roof rack compatibility before purchase to enjoy secure, added storage on any drive.
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 11 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 14-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 53" L x 34" W x 15" H | Capacity: 11 Cubic Feet and up to 110 LBS. Package includes [1] 53 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- DUAL-SIDE OPENING FOR EASY ACCESS: Dual-side opening design allows you to open it from either the driver side or the passenger side, which brings more convenience for loading and unloading. (NOTE: There is protective film on the lid. Please peel off the film before use.)
- FAIR CAPACITY: With 13.4 cubic feet maximum storage capacity and 150lbs loading capacity, the roof cargo carrier can allow for more space in your car. What’s more, its streamlined design will reduce drag and noise during driving.
- LOCKING SYSTEM FOR SAFETY: It is designed with locks on both sides and comes with keys for protecting your valuables. And the stiffeners at the bottom of the roof cargo box strengthen its stability.
- EASY TO INSTALL: It is simple in structure and light in weight (approximately 24.25lbs). It won’t be difficult for you to lift it and install it to your car. And it can work with most vehicles with crossbars, such as car, suv, van, etc. Applicable Cross Bar: Max. Width 2.36”. Max. distance between bottom holes for installation: 40.94”. Min. distance between bottom holes for installation: 15.35”.
- QUALITY MATERIAL FOR DURABILITY & BETTER PROTECTION: Made from ABS material for long-lasting use. And it can protect your luggage or equipment from being exposed to sun, rain or dust. And it is protected with 3-Year Warranty.
- Secure Travel Solution with Locking Rooftop Cargo Box: Travel confidently knowing your gear is safe! Our rooftop cargo box features a secure locking system (includes two keys) and robust straps, providing peace of mind against theft during weekend getaways or long road trips.
- Effortless Rooftop Cargo Box Installation: Enjoy a quick and hassle-free setup! This rooftop cargo box comes complete with all necessary components and clear instructions, allowing you to spend less time installing and more time adventuring. Experience ultimate convenience without compromising quality.
- Aerodynamic Rooftop Cargo Box Design: Experience a smoother, quieter ride! Engineered with an aerodynamic shape, this rooftop cargo box significantly cuts wind resistance and noise. The result? Improved fuel efficiency and a more enjoyable journey for you and your passengers.
- Spacious 17 cu ft Rooftop Cargo Box Capacity: Maximize your storage! Offering a generous 17 cubic feet of space and a 165 lbs weight capacity, this rooftop cargo box provides ample room for all your travel essentials, luggage, or outdoor gear – perfect for families and adventure seekers.
- Universal Fit Rooftop Cargo Box for Cars & SUVs: The ultimate travel companion for most vehicles! Designed for versatile compatibility, this rooftop cargo box fits a wide range of cars and SUVs. Simply check your roof rack compatibility before purchase to enjoy secure, added storage on any drive.
- Vehicle Compatibility - Designed to attach to vehicles with cross bars only, making it compatible with cars, SUVs, and vans.
- Solid Construction Design - Built with UV-protected, weather-resistant, impact-resistant ABS plastic with a black textured finish, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Spacious Capacity - Offers 13 cubic feet of internal storage with dimensions of 56" L x 32.6" W x 15.3" H. The 14-inch wide opening easily accommodates bulky items like luggage, sports gear, or camping equipment, with a maximum capacity of 110 lbs when weight is evenly distributed for safe transport.
- Secure Locking System - Includes a security locking system with keys to keep cargo safe and locked during transit. The box opens from both sides and stays open until closed, providing convenient access while ensuring your belongings remain protected and tamper-proof on the road.
- Easy Installation - With 4 X ABS plastic mounting brackets, no tool assembly & installation. Ideal for road trips, outdoor adventures, or extra storage needs, this 100% brand new box enhances your vehicle's capacity with a performance-oriented, custom fitment.
- A simple, durable roof box built for commuting, day trips, and weekend escapes
- 450 litres of cargo space and a 75 kg load capacity for luggage, gear, skis and snowboards. Secure, tool-free system with a torque indicator that clicks when safely attached. Confirms closure for added peace of mind. Access your gear easily from either side of the vehicle
- Streamlined shape designed to suit a wide variety of modern vehicles
- Made from hardwearing ASA-ABS plastic that resists sun, scratches, and weather
- Full trunk access with minimal risk of contact with the cargo box, thanks to its forward position on the vehicle roof
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 12.7 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 13.5-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 55" L x 34.5" W x 14" H | Capacity: 12.7 Cubic Feet and up to 110 LBS. Package includes [1] 55 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- 【UNIVERSAL】This Hard Shell Rooftop Cargo Box fits for vehicles with cross bars only, no tool assembly & installation. Increases vehicle cargo space without impeding on passenger comfort
- 【LARGE CAPACITY】Rooftop cargo box provides 13 cubic feet of additional storage space. The maximum storage capacity of 110lbs when evenly distributed. And it can be opened up to 14" wide to store bulky items
- 【ROBUST DESIGN】Constructed of rugged, impact-resistant ABS material with black textured finish for long-lasting durability, able to protect your contents from exposure to the inclement weather
- 【SECURITY LOCKING SYSTEM】Comes with security locking system and keys to secure valuables in the box; Double side opening for easy loading and unloading. It can open from the side and stays open til you close it
- 【SPECIFICATION】Capacity: 13 Cubic Feet Internal Storage | Max Capacity Distributed: 110lbs | Overall Dimensions: 56.3" L x 36.8" W x 16.25" H | Surface Finish: Black Textured Finish
- 【DURABLE CONSTRUCTION】Crafted from high-quality ABS material, the hard shell rooftop cargo box ensures long-lasting durability. Its waterproof and UV-resistant design protects luggage from various weather conditions, making it ideal for road trips. The aerodynamic shape also reduces fuel consumption and noise for a smoother ride
- 【UNIVERSAL FIT】Compatible with all vehicles equipped with a roof rack, including cars, vans, and SUVs. Prior to purchase, please verify compatibility by checking the roof rack fitting guidelines
- 【CONVENIENT DUAL-SIDED OPENING】The dual-sided opening system allows easy access from both sides of the cargo box. Includes 2 keys and 2 straps for added security. Ensure one side is locked when opening the other side
- 【RELIABLE WARRANTY】Roof cargo carrier is committed to delivering high-quality products and meeting customer expectations. Enjoy a one-year warranty for added peace of mind. For any inquiries, our team is available to assist you within 24 hours
Last Update : 2026-07-19
