It is commonplace for shops and businesses to put up a rollerblind when they leave the premises unoccupied, and the reason is that these are extremely secure. An aluminium or steel shutter can roll up in no time at all and be locked to shield a shop window from damage or office buildings from vandalism. Roller doors or shutters also have their use in the residential area as well as commercial. If you are lucky enough to own a second home, roller doors or shutters are ideal to seal it when you are away.
Even in your primary home you may find a use for roller doors, especially on a garage, an outhouse, or games room, for the same reason that they provide great security and convenience. Unlike conventional doors that open outwards, roller doors go up and over a drum so that they take up hardly any space on the ground giving you easy access to your garage without obstruction. Added advantages are that most are attractive, weather resistant, long-lasting, and virtually maintenance free, needing maybe just occasional lubrication.