In case you have no idea how much weight your plywood sheet is a sheet of inch plywood is approximately 100.
Tying lumber to roof rack.
Not only that but the cost of a roof rack is easily 5 10 times more expensive than a one day truck rental.
With anything you plan on tying down you ll need three preferably four solid points of contact stability.
Ask for help from friends if.
If you have an suv and need to haul lumber often a trailer would be a better option than a roof rack.
On a roof rack step 1.
Then i use the nylon web tie downs i ve got in the photos of below.
Secure it to the roof rack.
Adam davis dec 10 15 at 15 03.
Oh and remember to.
Remember to place a distance of about 3 to 3 foot in between.
The second option is the side racks.
On each side of the roof you ll see a rack that runs the length of the roof of the vehicle.
For infrequent use though truck rental is a better option.
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.
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.