A roof box is a great way to add extra storage space to your vehicle. However, there are a few things to keep in mind when using a roof box. Here are 15 common mistakes people make when using a roof box.

1. Not securing the roof box to the roof
One of the most common mistakes people make when using a roof box is not securing it properly to the roof. Make sure to use the proper straps and tie-downs to secure the roof box to your vehicle.

2. Not packing the roof box properly
Another mistake people make is not packing the roof box properly. Be sure to evenly distribute the weight in the roof box and do not overload it.

3. Not checking for clearance
Before you head out on the road, be sure to check for clearance. Make sure the roof box does not extend too far over the edge of your vehicle and that it does not block your view.

4. Not opening and closing the roof box properly
Be sure to open and close the roof box properly. Do not force it open or closed, and be sure the latch is securely closed before driving.

5. Not securing the contents of the roof box
Make sure to secure the contents of the roof box so they do not shift while you are driving. Use straps or netting to keep the contents in place.

6. Not cleaning the roof box regularly
Be sure to clean the roof box regularly to prevent dirt and debris from building up.

7. Not checking the roof box for damage
Before each use, be sure to check the roof box for any damage. If there is any damage, Do not use the roof box until it has been repaired.

8. Not using the proper roof box for your vehicle
Be sure to select the proper roof box for your vehicle. Make sure the roof box is the right size and has the proper attachment system for your vehicle.

9. Not using the roof box in the proper weather conditions
Be sure to check the weather conditions before using the roof box. If the weather is too windy or rainy, it is not safe to use the roof box.

10. Not removing the roof box when not in use
If you are not using the roof box, be sure to remove it from your vehicle. Do not leave the roof box on your vehicle when it is not in use.

11. Not storing the roof box properly
When you are not using the roof box, be sure to store it in a dry, safe place. Do not leave the roof box outside where it can be damaged by the weather.

12. Not covering the roof box when not in use
Be sure to cover the roof box when it is not in use. This will protect the roof box from the elements and keep it clean.

13. Not securing the cover on the roof box
Make sure the cover is securely fastened to the roof box so it does not blow off while you are driving.

14. Not using the roof box for the intended purpose
Do not use the roof box for anything other than its intended purpose. Do not stand on the roof box or use it as a seat

15. Not following the manufacturer's instructions
Be sure to read and follow the manufacturer's instructions for the roof box. Do not use the roof box in a way that is not intended by the manufacturer.

In conclusion, many people make the mistakes they didn’t even realise they were making when using a roof box but at the end of the day they are very valuable tools for storage and transportation.