Most people are opting for roller shutters on their windows. This is because they are designed to roll down a window, fitting across and along the frame snugly. This not only provides added security, but also doubles up as a form of interior design, since roller shutters look good. Being incredibly strong, shutters they cannot be easily pried away from the window. This is one of the ways they deter intruders and potential robbers. Sometimes, even the sight of shutters makes would be invaders change their minds.
The beauty of roller shutters, apart from being pretty and functional, is that they can be both manually and electrically operated. Manually operated shutters use a winder or some other form of similar mechanism, while the electric ones are automated and close or open at the push of a button. The electronic ones work through a small motor that is powered by either electricity or solar.
Another reason as to why shutters are so popular is the versatility in design. They are made in such a way that the slats are either joined very close together or can be deigned to open, to the levels you desire. When the shutters are open, they hide away in a slim protective casing called a cassette. They are also available in a variety of colours, which you can coordinate with the paintwork on your gutters, fences or even window trims.
But what are they made of?
To understand this, we have to look at the various components of the roller shutters individually. Sometimes, the material may be the same throughout, but other times, different materials may be used. Here is a look at some of the main shutter components and what they are made from:
These are made mainly from steel and aluminium, since they are required to be extra strong. They can either be multi wall or singles, depending on the usage and the space to be inserted. Perforated lath shutters for instance are very popular with mall shops, since they are a cost effective way for adding to the security of the shop against break-ins.
This is a steel or aluminium tube. It is supported on each end by an end plate. This tube is an essential part of the roller shutter, since it is what the shutters move on when opening and closing.
The primary job of this component is to protect the roller assembly. It therefore needs to be light, while remaining strong enough to make sure the components stay secure. As such, the shutter box is made either from light formed steel or aluminium; these are light strong and very durable metals.
There are two common types of springs. The spring wire, also called a torsion spring, is made from spring wire material. They come in an assortment of gauges, depending on the size and usage of the shutters. The most common gauges are 0, 2, 3, 4, and 5, and the gauge size increases with the size of the shutter.
There is also a flat spring. This is typically made from hardened steel that is coils. The tempered steel is graded, with common grades for instance being C67, CK67, and SAE1070 among others.
This is sometimes referred to as a guard track, depending on the manufacturer. Their job is to retain the shutter curtain. They are made either from steel or aluminium. To reduce rattles, rubbing strips and draught strips can be added to the guard rail.
Bottom Lath and Lock
The bottom lath matches the lath and is typically made either from aluminium, steel, or PVC. There are rubber tubes added to reduce the draught when the shutters are in motion.
Another main component is a lock. It secures the shutter in place, preventing it either from dropping suddenly when up or being opened by people with malicious intent when closed. Shutters are usually locked either with a bullet lock or a shutter lock that has arms. These arms lock the shutter to the frame.