If you are ordering your banner with grommets, the best way to hang it is to put some tension on the grommets so the banner is pulled tight and hangs flat. If you are using banner hanging hardware to hang the banner without grommets, follow the instructions that came with your hardware. We sell banner hanging systems that are inexpensive, make for a great looking hanging display, and don't require any special finishing on the banner.
If your banner is being installed in a display, see the installation instructions for the model you are using. Be sure to choose the correct finishing options to match the type of banner display you have. For example, if you are using an X-banner stand, you will need grommets in the corners of the banner. If you are unsure, tell us in the Special Instructions what display you have so we can make sure the finishing is correct for that specific purpose.
For outdoor use, grommets are the preferred method to attach a banner to just about any surface. It's even more important to keep outdoor banners under tension, because if there is too much slack in the banner, it can whip around in the wind, and the force that generates will tear up the banner or rip out the grommets, no matter how strong the banner material is. We recommend either attaching the banner with something that gives, such as bungee cords, or checking the banner at regular intervals to adjust the tension and keep it tight. Since bungee cords stretch, you can put the banner under tension and it will be able to flex in the wind without coming loose.
For more installations against a wall, such as on the side of a building, you can use screws or bolts with washers through all the grommets, but again, make sure the banner is pulled fairly tight. This type of installation can last for quite a while because the banner is protected by the wall from wind, but you must be sure to take the slack out of the banner. We also have a banner frame system designed to be attached to a wall or the side of a truck that holds the banner smooth and tight, and lets you change the banner fairly easily when necessary. With a system like this, a banner can last for 3 years or more outside since it can't be damaged by wind. Contact us for more information on this banner frame system.