Colorbond Roofing – To Steel or Not To Steel?

A new trend which has steadily grown in the last few years within the roofing industry is the good old sturdy and cost effective Metal Roof! Colorbond Roofing is the new black and all the rage with expert architects agreeing this simple, humble material can not only lift the aesthetics of your home but also add value and save you some dollars down the track. Peter from PJ Group has taken a closer look at this developing trend with all its pros and cons.

Some of the Advantages of Metal Roofs

We thought we’d discuss some of the advantages of having a metal roof, whilst the most common types of materials used are aluminium and steel:

  • Less maintenance required – though both tile and metal roofs generally have ridge capping, tile roofs need repair to ridge capping around every 10-15 years
  • Works well for low-pitched roof areas, different roof profiles to suit 5-10 degree pitches where tiles would not be suitable
  • New modern look
  • Not prone as prone to leaking as tile roofs, wind driven rain will get into roof cavity on tile roof unless there is sarking under the tiles, but very rare for that to be a problem with a metal roof, regardless of whether there is a blanket underneath or not

Multiple Metal Roof  Varieties Available

Gone are the days of metal roofs being limited to the unpleasant sight of corrugated iron. With a wide availability of colours, styles, textures and designs plus the advent of new technologies have all helped increase the use of steel roofing in both residential & commercial architecture.

The most recent innovation is the new Colorbond Matt product, to give you a less glossy look than the previous standard options.

Choose colours and different profiles, though sometimes efficiency outweighs aesthetics – example: you wouldn’t use corrugated sheets on a low-pitched roof, a Trimdek or Kliplok profile will perform better to help the water run down a low pitch.

For residential installation, the most popular sheet thickness is .42 BMT, however there is also the option of .48 BMT thicknesses which is preferable for areas with higher foot traffic or commercial installation.

Not all Colorbond steel is the same, some of the options available are:

  • Standard steel
  • Stainless steel
  • Ultra steel

The Stainless and Ultra Steel options are a preference for installation in coastal locations.

Long Life Expectancy

Metal roofs tend to have a long life expectancy ranging between 20 – 50 years which is similar to roof tiles, however over a 50 year period, the differences between the cost of maintenance is far less for metal than tiles. Blue Scope provides customised warranty documentation depending on the product used and surrounding factors of the property.

Fire Resistance

Another important aspect is that metal roofs are fire resistant which in turn makes them a safe option and a popular choice for industrial constructions. A recent study (Download Here) conducted by the CSIRO found that steel offers greater protection against fire compared to alternative materials due to its non combustibility. Colorbond Steel which is pre-painted and metalic coated performed the best under all exposure conditions including when under a strenuous 30 minute flame immersion.

Here’s some more information on fire resistance

Low Maintenance & Great for Long Term

The resistance of dampness, mildew, rots and rain make this a great option for low maintenance, which in the long term cuts down on costs as well.

Not much maintenance, older the roof gets, looks will deteriorate, if job done right, should last over 25 yrs, however, like a car, needs to be serviced – clean out gutters and valleys, walk on correctly, cleaning and checking depending on environment conditions. Silicone can wear and flashings may eventually need replacing.

Design Flexibility

With a plethora of colours plus a large range of textures and patterns available on the market is allowing architects the freedom to be innovative and creative, the benefit being: you may have a unique design which no one else has and adds value to your property.

The most recent innovation is the new Colorbond Matt product, to give you a less glossy look than the previous standard options.

Environmentally Friendly Colorbond Roofing

One of the great points is the sustainability and positive environmental impacts of metal roofs, the most common metal roofs available on the market are steel materials which have 90 to 95% recyclable materials not to mention some of the special coatings used in colorbond roofing help to reflect the extreme heat reducing energy costs associated with on air-conditioning.

Easy Installation

The installation process of metal roofs is easy and can in many cases be installed over existing roof structures which make this advantageous in many areas with frequent storms.

Replacing a standard residential house roof can take approx 3-4 working days, depending on the size of the house.

Rolls of the blanket/foil are easy to roll out on top of the roofing battens, whereas with tile the battens are laid on top of sarking. Metal sheets are fixed over the top of the blanket.

Some of the Disadvantages:

High Initial Costs

A quick google search for Colorbond will bring up a heap of results, with a general price range between $12 to $35 per meter. This can add up depending on the size of your project, however considering the low maintenance costs and high durability the long term benefits far outweigh the short term costs of installation.

Expansion & Contraction

One of the disadvantages of having a metal roof is hot weather which can cause expansion and contraction of metal roofs. If the proper texture isn’t used with good design elements and decent fastening systems put in place, heat can run havoc on your roof.

When going to the effort of replacing a roof, it’s the most advantageous time to install ceiling batts and a roofing blanket after the old roof has been removed. Queensland is subject to hot summers and warm spring months and good insulation helps to control heat and cold.

Noise Pollution

Some of the concerns many people have are the noise factor due to rain and hail, however these can be minimized by using materials like Roofing blankets which are excellent in keeping noise down, dampening the noise from rain or hail and come in a range of thicknesses, which in turn can have a secondary positive impact by controlling temperature.

Roofing blankets are excellent in keeping noise down, dampening the noise from rain or hail and come in a range of thickness.

There are many pros and a few cons to getting a metal roof designed and built for your next project, however with careful planning and consultation you can come up with a good strategy which will save you time and money in the long term. For a no obligation quote on what can be achieved and how we can help you call us on (07) 3809 4800