If you want to install a stainless steel wire balustrade, then you have to choose a grade of wire to string between your posts. Typically, people use 7x7 or 1x19 grades for this purpose.
While both of these wires are more or less the same size, they have different properties. Which one should you choose?
Do You Need Extra Strength?
Both 7x7 and 1x19 wire ropes are very strong. In most cases, either will string up balustrading more than adequately. However, if you want your wires to be extra strong, your best bet is to go for 1x19 wires. These products are made from thicker strands of wire. The end result is a more rigid wire with added strength. It won't bend or stretch, and it is far harder to break.
Do You Need Some Flexibility?
In some cases, you want balustrading wiring to have some give in it. For example, you may need the wire to bend or to follow an angled line. Or, you may plan to swage your balustrade by hand rather than by using a hydraulic fixing tool. In this instance, a 7x7 wire is probably your best option. This wire is made up of 49 different strands of thinner wire twisted in sets of 7. It is less rigid than a 1x19 alternative.
This increased flexibility gives the wire a bit of give. It can bend a little more so you can crimp it. You can also install it by hand. A 1x19 product won't bend without kinking, and you usually need to install it with a hydraulic tool.
Are You Bothered About Finish?
While both of these wires are about the same size, they don't look exactly the same. A 7x7 wire is made up of more strands of wire. It has more twists in it. A 1x19 product has a more even construction and looks sleeker. While cosmetics aren't an issue for everyone, some people do prefer a neater look on their balustrading. In this case, going for a 1x19 wire may suit you better cosmetically.
Are You on a Budget?
If you don't have any other factors that affect your choice of wire, then cost may come into play. 1x19 wiring is slightly more expensive than a 7x7 alternative. So, you could save some money by choosing the lower grade option.
For more information on wire grades and how to install them, ask your stainless steel balustrading supplier for advice.