Use a tie down that wraps around the item and the rails.
How to attach something to roof of car.
Consider a roof rack.
With the third option crossbars with side rails you can secure an item to the side rails and run tie downs from front to back securing them to the crossbars.
On each side of the roof you ll see a rack that runs the length of the roof of the vehicle.
Avoid the scraping and gouging with fasteners from the perfect bungee which has an impressive array of cords with tough gentle hooks and loops of molded nylon and polyurethane.
If you have a roof rack the straps ropes can be looped around the side and cross rails.
Wood says side rails and crossbars are ideal but you can move whatever you you need to.
When you are tying things down to the roof of your vehicle each.
Step by step instructions for tying items to a car roof follow the directions that come with your products.
Tie down the boards lengthwise and widthwise similar to how you d secure a mattress.
Wrap lumber in a tarp to secure it and place a blanket down on the roof under the load to avoid scratching your vehicle s paint.
How to tie things to the roof of your car acquire ropes and straps.
Assess your rack situation.
When you have to tie something down to the roof of the car to a wall of the garage you sometimes need a bungee cord without a rough metal hook at either end.