Metal roofing systems are increasingly specified for both residential and commercial applications due to their longevity, the extended period between replacements, low maintenance requirements and aesthetic appeal.
However, there is more to them than meets the eye. Metal roofing company, Safintra, points out some of the most frequently overlooked aspects of metal roofing:
Unique forming methods allow intricately designed metal roofing profiles such as the Saflok™ concealed fix range or the Newlok standing seam range.
The benefit is that concealed fix systems are interlocked onto a clip, affixed to the purlins with good quality fasteners, offering beauty and weather-tightness. These are lightweight, easily transportable and simple to install.
Depending on various factors, including pitch, wind zones and terrain, some profiles are more suited to certain applications than others. For example, concealed fix is ideal for application on industrial and commercial buildings due to suitability for low-pitched roofs, ensuring a leak-proof surface, low-maintenance solution. For roofs with a higher pitch or for side cladding, pierced-fix profiles may be a better solution.
Material choices and costs
Metal roofs can be made in a wide variety of materials, with the local favourite being turn-of-the-century galvanised material. The downside of this choice is that it can rapidly corrode, especially when exposed to coastal or high-alkaline environments.
Aluminium zinc, in turn, offers superior corrosion resistance and stays cooler due to excellent heat reflectivity, thereby reducing the cost of cooling and heating in a building, but it is marginally more expensive.
Aluminium, which is higher on the cost scale than other materials, offers the best corrosion protection, particularly in salt-spray coastal environments.
Rheinzink®, a high-purity zinc with defined additions of titanium and copper, is extremely corrosion-resistant and offers a service life of 80 to 100 years. This option is also at the higher spectrum of the pricing scale.
All pierced and concealed fix profiles are available with a range of standard and custom flashings and closures in matching colours. Vents and louvres are also available to complement the building aesthetics.
Steel adds to green credentials
Steel is the most recycled material on earth. The entire value chain, recent regulations, as well as built environment professionals themselves, are creating a greater consciousness of reducing the carbon footprint during construction and through the disposal of materials. It is therefore becoming increasingly important for everyone involved in the building process to recycle materials, minimise waste and reduce water waste during and after construction.
Safintra is part of the Safal Group, the biggest metal roofing company in Africa, and has over 25 years of metal roofing experience in the South African market, with seven branches in Johannesburg, Durban, Cape Town, Polokwane, Nelspruit, Port Elizabeth and Bloemfontein.
Tel: 011 323 6300
Captions Main Image:
The deep pans of the Saflok™ 410 provides excellent water run off, even at a relatively low building pitch at On the dot