Tie down the boards lengthwise and widthwise similar to how you d secure a mattress.
How to attach something to roof of car.
If you have a roof rack the straps ropes can be looped around the side and cross rails.
How to tie things to the roof of your car acquire ropes and straps.
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.
Consider a roof rack.
Step by step instructions for tying items to a car roof follow the directions that come with your products.
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.
When you are tying things down to the roof of your vehicle each.
Wood says side rails and crossbars are ideal but you can move whatever you you need to.
Buy a small sheet of dark gray or black plastic at a hobby shop and cut out about a 6 inch square.
Wood recommends a webbing strap with a fastening buckle that doesn t use a ratcheting system.
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.
Use a tie down that wraps around the item and the rails.