Roller doors are types of doors which consist of slats hinged together to form a flat surface like a curtain. When opening a roller door, raise the slats from the bottom after unlocking the fasteners and the slats will be pulled up by mechanised springs up. In the case of large doors, they are motorised to make work easier when opening and closing the doors. Here are some things to know before you install a new garage roller door.
Parts of a roller door
- Slats: these are roll-formed steel; they can be single or multi-walled. Either way, they can be hollow or insulated in design. They can also be in the form of stainless steel or aluminium.
- Roller: made of steel and supported from either end by a plate.
- Shutter box: an aluminium extrusion like a box designed to shield shutter’s inner components
- Shutter spring: a torsion spring made from spring wire, this is what pulls up the slats when closing the door to save you efforts, there is another type of spring called flat spring which is made from hardened steel strip-like, for example, C67, SAE1070, Ck67, etc.
- Guide rail: this is a steel or aluminium that is meant to retain the shutter curtain in between the opening. It could be weather-sealed to improve product life and reduce vibrations.
- Bottom slat: this may be steel or aluminium or even PVC that matches the rest of the shutter curtain. A safety edge can be added in the form of rubber or weather seal to reduce draught.
- Lock: lock is used to secure the slats in place. It can be bullet lock or slide lock used to manually secure the curtain slats. Slim locks can be installed within the last slat. It should have bars that lock the shutter firmly on to the guide rail.
Advantages of roller doors
- Protection against burglar: they are firm and hard to difficult to break into if you don’t have access keys.
- Protection against whirlwind: it provides opaque protection against wild wind.
- Rain protection: no rain enters into the inside of a building closed using the roller doors
- Protection against fire: everything else will burn up except the roller doors. In the fire outbreak from the entrance, the fire will be shielded from burning through.
- Used to protect other doors: you can use roller doors in front of wooden doors or glass doors to protect them from physical breakages.
Where to use roller doors
- Doors for vans
- Garage yards
- Hardware shops
- School gates
- Prisons wards
- General shops
- Windows in high story buildings
Types of roller doors
There are several roller door types as listed below:
- Built-on roller shutter doors: shutter-box fixed on to the exterior facade of the building
- Built-in roller shutter-doors: shutter-box built-in to the lintel above the window
- Integrated roller shutter: combined as a single unit
- Roller shutter with tilting louvres: shutters with laths and tilts
- Manual: it has gear drive from the shutter that will allow you to easily pull up or down
- Manual tape: opened by lifting or lowering the handle
- Spring Assist: the spring will pull up the rollers when you pull up a little, the spring assist takes over to the toll
- Motorised/electric: fitted with a tabular motor or electric.
Roller doors are the most sophisticated method of preventing unauthorised access to stores, buildings, supermarkets, etc. If you consider shopping for one, I assure you will get the best fit just around here in Newcastle.