A simple ratchet strap works best.
How to strap mattress to roof rack.
Learn how to safely secure items to your car s roof racks.
If you do put it on the roof of your vehicle have a strap run from front to back as well as from side to side.
Buy sturdy rope nylon or polyester based.
Ratcheting straps are much less likely to fail when moving a bulky item like a mattress.
When it comes to sporting goods it s worthwhile to invest in custom built roof equipment leanse says like a dedicated rack for bicycles snowboards kayaks or surfboards.
Cover the entire load with a tarp or netting to prevent things from falling out.
Pull the rope tight so there is no extra slack.
Mattresses are large bulky and can pick up resistance from the wind.
The second option is the side racks.
If you have a roof rack the straps ropes can be looped around the side and cross rails.
Still there is a basic method to follow when tying a mattress to the roof of a car.
After the mattress is secure in the plastic place the mattress on the roof.
I would say follow a similar process to what ryan said but i would not recommend using rope.
Stack items evenly across the roof and in the center of the doors.
Consider a roof rack.
Tie down the boards lengthwise and widthwise similar to how you d secure a mattress.
Use a tie down that wraps around the item and the rails.
Once the rope is tightly placed on the mattress open all.
This will stress any knot no matter how securely tied.
On each side of the roof you ll see a rack that runs the length of the roof of the vehicle.
Put a piece of rope on the roof of the car that goes from back bumper to front bumper.
Center the mattress in the middle and put the rope over the length of the mattress.
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.
Make sure your ro.
Put the mattress on top of the car and rope so that it goes length wise with the length of the car see pics above.
I came across a guy on the highway that only had a strap going across.
Secure the front end of the mattress and then the other end of the mattress.
Lighter goes lower place heavier items on top of lighter items.
Racv s ernest litera shares some practical tips on roof rack safety loading.