(Quoted from Louie Calma, Technical Specialist at Arlon. Full article here.)
Printed graphics on walls are a great way to transform a plain blockade to an exciting, money-making and eye-catching display. Additionally, installing exterior wall graphics are still the best way to express creativity and generate another means of promotion.
Compared to interior walls, exterior walls present more challenges when it comes to the product selection and application techniques. For example, exterior walls can be made out of concrete, bricks or cinder blocks with finishes ranging from smooth to extremely textured. With this in mind, take note if the surface is primed, painted, sealed or has no coating at all.
Before you begin installing exterior wall graphics, we highly recommend watching our WrapItRight® video, “Testing an Exterior Wall for Media Compatibility.” It is crucial to choose the right media and determine if the wall can actually be wrapped.

Click here to read the full article from Arlon!