Digital printed media onto pvc coated up and over garage doors

[Robert Lambie]

There are “lots” of reasons these types of vinyl applications fail, and it is often a combination of several things.
i.e. you could have the perfect material for the job, but the application or finishing method is wrong.
More often than not, cleaning and prepping the surface isn’t done 100%.
You also have to consider the weather and temperature during and 72 hours after the application, as this is a key time for the material to create its initial bond to the surface.
Even the perfect application with the correct material can fail if the trimming and finishing aren’t correct, because these types of doors have moving joining parts, where rubbing, friction, grease, and dirt quickly build up. Areas like this, where two slats meet, must be trimmed back a minimum of 2mm on each side of the join. It may not look as good as a nice butt-join, but it will far outweigh the life expectancy of the film if it’s not trimmed back.
To make matters worse, many modern coated metals have repellents in the material to help prevent general dirt and grime build-up, but also paint and solvent markers, marking the surface due to graffiti.
These repellents can have adverse reactions to the vinyl, trying to bond to the surface.

I am not trying to throw negatives at you, I am just pointing out some reasons failures can happen.

In short, extra time spent cleaning and prepping the surface, on a dry, moderately warm day, is the best condition. Heat the material after the application with plenty of attention to the joints and moving parts.
A decent polymeric or cast film is advised and maybe speak to your supplier to see what type of higher-bonding adhesives your film is available in, if you think that the bonding surface might be the reason.
All this said, I have done a fair amount of roller shutter door wraps on industrial units, shops and literally thousands of truck roller shutter doors, over the past 35 years, and all have been standard polymeric or cast vinyl, depending on the irregularity of the surface.