Usually, when I haul plywood I place a couple of 2x4s over the rack* then add plywood on top and strap the entire package down. I've never had a problem but it's less than ideal. * The rack is curved from driver to passenger side to contour to the roof...meaning anything flat only contacts the rack in the center.

Does anyone know of any add-ons or modifications I can make to more securely and easily haul a few sheets of plywood and drywall?

Thanks!

 

To be honest, I think what you've been doing with the 2x4s is probably the best way. I would probably screw some blocks (or a shorter length of 2x4 to the bottom of them to keep them from sliding sideways off the rack, but other than that..

 

Thanks Tom. Good idea on the blocks. I saw a couple of YouTubes with something similar. Now, somewhat (overly) obsessed, I'm designing something that would be my dream quick-attach fixture for hauling sheet material....in the event I don't downgrade my Jimmy to a more practical pickup truck. I'll post it if it becomes reality (unlikely!!).

 

I would suggest running your straps through the cab and not relying on the actual roof rack to support the force of the wind pulling up on the plywood when you drive. There's not a lot of meat holding the roof racks to the roof ask me how I know lol!

 

Good point. I saw a picture of a kayak attached to a roof rack that pulled the rack off the car.

 

tentatively
just quite how do you know?

 

Been using a THULE kayak roof mount which mounts on the door sill in the front. This extends the rack and adds another point.
rexmburns advice is solid. Done that before and ran the strap through the aft door. And/or keep the speed down.