Street banners are a mystery it seems, or they were until we got in the game. I have seen dozens of different “engineered” methods to finish a banner hanging over a street.
Most of these methods are either too weak or ridiculously over engineered. But there is a better way, all you have to do is take the wind-load off the banner material and transfer it to something stronger like seatbelt webbing. Oh and you really have to avoid using rope and grommets, they are evil when it comes to street banners.
Here’s how it’s done:
○ Finish the banner with a webbing reinforced hem. 2" wide webbing is preferred.
○ Attach metal D-rings to the webbing on all four corners of the banner.
○ Attach aircraft cable to the D-ring and fasten to pole or structure.
That’s it, it’s that simple. By doing this you are taking the load off the banner which on a good day could withstand a couple hundred pounds of load and transferring it to the webbing which will take anywhere from 500 to 2000 Lbs before it breaks.