4 web ratchet straps in a pair of x formations to hold down the board to the cross bars.
How to attach wood to a roof rack.
Remember to place a distance of about 3 to 3 foot in between.
To attach the metal braces to these blocks i cut a section out of each side of the blocking a curved fashion using the same method of incremental 1 8 cuts using the table saw fence.
My car with 4 x8 mdf board on the roof rack.
Second trip 16 2 x4 x6 boards on my roof rack.
What types of tie downs work best.
Use a tie down that wraps around the item and the rails.
To attach the four saddles to the rails i again used blocks of oak similar in size to the roof rack blocks.
It will be adjustable to a range of angles depending on the shape of the kayak bottom.
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.
Makes it a lot harder for the winds to lift it up.
In case you have no idea how much weight your plywood sheet is a sheet of inch plywood is approximately 100.
Rusticdavid woodworklessons woodworkingforbeginners david shows how to tie wood boards and sheets of plywood safely and securely to your cars roof rack dav.
Secure it to the roof rack.
A pair of 20 web ratchets used as a fail safe in case the board slides to the rear of the vehicle.
On each side of the roof you ll see a rack that runs the length of the roof of the vehicle.
I transport 4x8 plywood on my roof racks i usually run a couple of 2x4s under the roof racks the full length of the ply and strap to those at the front and back as well as strapping to the actual roof racks.
My car with roof rack with cross bars installed.