In Australia, roofing supplies normally fall into one of two prospects: concrete roof tiles; or corrugated steel roofing with a bonded paint end (identified in Australia as Colorbond, or CB). Which possibility is greatest on your scenario? Each will maintain the climate out, so weigh up the components beneath earlier than you determine.
A Bit of Historical past: The idea of bonding paint to a galvanized base originated in Chicago, and was additional developed in Australia right into a product that has exceptional corrosion resistance and is aesthetically fascinating: Colorbond©. It is available in many customary colors and is immune to the weather. Whereas a galvanized corrugated roof may final 20 years, a Colorbond roof would have a 50 yr life or longer.
Terra cotta tiles are additionally an possibility; they actually final perpetually. Assume archaeological dig. There are examples of terracotta roofing which have been round for 1000s of years. Nevertheless it’s about double the worth of a concrete tile roof.
For our functions, we are going to evaluate concrete roof tiles and Colorbond roofing, and can concentrate on Melbourne situations. Each merchandise do an admirable job at what they’re designed for (retaining the climate out). Concrete roof tiles have been utilized in Melbourne for at the least 75 years and there are a lot of homes in older suburbs equivalent to Heidelberg and Camberwell that also have their authentic concrete tile roofs commercial roofing.
Why would you choose one product over one other? It comes down to private style, way of life, just a few different components… and COST.
Architectural Advantage: This can be a private matter. Colorbond has a contemporary fashionable look with clear traces. Nevertheless, there are a lot of concrete roof tile profiles that give a unique architectural consequence than a typical half-pipe tile. For a small addition in worth, you possibly can (for example) choose a flat shingle type. There are additionally many colors in concrete roof tiles.
Noise: This is a crucial consideration. Insulation and ceiling however, you’ll hear rain on a Colorbond roof. Whereas we would suppose of raindrops falling on a steel roof as a nice sound, it may be disturbing to some individuals, particularly in heavy downpours. Tile roofs are a lot quieter.
Water Assortment: If you wish to gather roof water in a tank for family use, Colorbond is the best choice. You’ll harvest extra water as a result of concrete tiles have a degree of absorbency. Additionally they have a tendency to retain grime, mud and so forth which washes into the water tank. Throughout the latest 10 yr drought in Melbourne, house house owners have been inspired to gather rain water for family use. This influenced the demand for Colorbond roofing.
Weight: Colorbond is a fraction of the load of a concrete tile roof (10% to be exact!) So your roof framing may be a lot lighter. Additionally, a Colorbond roof isn’t any heavier moist than dry. A concrete tile roof will soak up water earlier than it runs off, so a moist tile roof is heavier and engineering specs want to permit for this.
Rodents: It’s easier to make a Colorbond roof pest-proof by nature of the best way the product is put in.
Bushfire: Melbourne is a metropolis adversely affected by summer season bushfires. If you’re constructing within the outlying fire-prone areas, BAL (Bushfire Assault Stage) laws will make it in your curiosity to decide on a Colorbond roof, as they’re simpler to seal in opposition to exterior ember assault.
Resilience: Should you want individuals to climb in your roof for upkeep causes, Colorbond is extra resilient. Nevertheless, if you should penetrate the roof (for example for a vent or air-con) this will likely be costlier with CB.
Eaves or Veranda. If in case you have intensive verandas or eaves, a Colorbond roof will likely be extra fascinating as a result of of its lighter weight. With verandas you desire a shallower roof pitch, and this could solely be achieved by some type of sheet roofing. Usually roof tiles should not beneficial on a roof pitch of lower than 20 levels. And since Colorbond is a descendant of old style corrugated metal, this delivers the standard Australian veranda look.
Price: Concrete tiles are over 20% cheaper than Colorbond, which is why greater than 90% of houses in-built Melbourne have a concrete tile roof. The promoting may need you suppose that CB is as low cost as tiles, however this isn’t the case. Designers generally want Colorbond. One shopper paid to have plans drawn up by a designer. When in search of quotes, they have been horrified to see hundreds of additional for a Colorbond roof, after they really most well-liked a standard tile roof.