Secure it to the roof rack.
Tying lumber to roof rack.
With anything you plan on tying down you ll need three preferably four solid points of contact stability.
I use 4 hand clamps at the corners to hold the plywood to the 2 x 4 s.
Here i have the bicycle s handlebars firmly planted on the roof rack s cross bar in the.
On a roof rack step 1.
Not only that but the cost of a roof rack is easily 5 10 times more expensive than a one day truck rental.
If you have an suv and need to haul lumber often a trailer would be a better option than a roof rack.
For plywood i put two 2 x 4 s on the roof rack and place the plywood on top of those to stiffen the plywood otherwise it flops up and down at highway speeds.
Adam davis dec 10 15 at 15 03.
Remember to place a distance of about 3 to 3 foot in between.
Use a tie down that wraps around the item and the rails.
For infrequent use though truck rental is a better option.
On each side of the roof you ll see a rack that runs the length of the roof of the vehicle.
In case you have no idea how much weight your plywood sheet is a sheet of inch plywood is approximately 100.
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.
Then i use the nylon web tie downs i ve got in the photos of below.