If you are planning a commercial build in the near future, roofing is something to consider, and aside from asphalt, you can either choose a metal roof or use a composite material. If you take a look at some of the industrial zones near where you live, you will notice that aluminium and galvanised steel are very much in evidence, and for good reason, as metal roofing stands the test of time.

Metal Roofing

With the vast majority of industrial roofing in Perth being aluminium, there are many reasons why metal roofing makes for an excellent choice. Firstly, it is designed to last a long time, so expect a warranty of 20-25 years if you opt for a metal roof, plus it is corrosion resistant and virtually maintenance free. If you search online for a local metal roofing contractor, they would be happy to pay you a site visit and discuss the many options, and with aluminium roofing, you have a very attractive finish, which is very important for any commercial premises.

Composite Roofing

There are several composites that are well-suited for commercial roofing, which include the following:

  • EDPM Roofing – Known simply as rubber roofing, the technical term is ‘ethylene propylene diene monomer’, which is one of the cheapest forms of roofing available today. The downside with rubber roofing is that it doesn’t have the aesthetic appeal that metal roofing does, and as it comes in black, it absorbs the heat, which isn’t ideal. Furthermore, the surface is easy to penetrate, and a worker with the wrong shoes could puncture the skin, and if that goes unnoticed, damage could occur.
  • TPO Roofing – Thermoplastic polyolefin roofing is another popular composite roofing material to consider, and the white colour helps to reflect the heat way from the roof, keeping the interior cooler in the hot season. TPO roofing can be installed in several ways; it can be directly fastened to the roof deck, or stuck down using an industrial grade adhesive. The major advantage of TPO is that the joins are heat-welded, making for a watertight finish, and as far as downsides go, there are a few. The quality might vary from contractor to contractor, plus TPO is not fire rated, which might cause some concerns, and as this membrane is still being developed, it might not be at its best at this stage.
  • PVC Roofing – This in a relatively new product that is fast becoming popular among Australian business owners, with two sheets of PVC that have a thin membrane of polyester in between. There are additives to make the material UV resistant, and the edges are heat-welded to ensure a watertight finish. The downside is this material can become very brittle in cold temperatures, plus the surface can easily be ruptured with a sharp instrument.
  • Spray Polyurethane Foam –SPF as it is known, this spray-on composite has several advantages, namely it is very light and when applied, it expands in an instant to around 30 times its normal size, which gets into those hard-to-reach places, creating a good seal. The roof should be covered with an acrylic roof covering, which acts as a seal, and a reflective top coat can save a lot of energy.

It make sense to carefully examine all of the pros and cons of a roofing material before making any decisions.