It s best to use a thinner piece of rope and go through an open door and then shut the doors on top of it.
How to tie a doors to a roof rack.
Use ratchet or cam straps to tie the roof rack through the doors not the windows.
To safely tie an item to your car s roof start with all the windows down except the driver s window.
On each side of the roof you ll see a rack that runs the length of the roof of the vehicle.
Next pull the long end of the strap under the crossbar on the.
Rusticdavid woodworklessons woodworkingforbeginners david shows how to tie wood boards and sheets of plywood safely and securely to your cars roof rack dav.
Open all four doors and locate the crossbars and rubber cushioned feet in the recommended locations.
In the case of a naked roof you should be looping the rope through the car through the doors not the windows and around the object on the roof and a towel or blanket should be used to protect the roof of your car from the object.
Wood says side rails and crossbars are ideal but you can move whatever you you need to without them.
If you have side rails and crossbars the straps can be looped around those.
Use a tie down that wraps around the item and the rails.
Then swing the locking lever down to secure the clamp to the roof.
You should avoid going through an open window though.
First loop the strap under the roof rack s crossbar and drape the loose ends over your oblong load i e.
You won t be able to open the other doors once the rope is tied through the open windows.
Roof racks have been known to fail at high speeds with lots of updraft so take the extra precaution of tying the roof rack down to the roof of the vehicle as well.