Roofing materials are always a hot topic, and rightly so. Specifiers are seeking durable, effective and aesthetically pleasing roof’s that are also cost-effective. As such, zinc is often touted as an effective material, but in this feature, Adrian Whitefoot, Technical Services Manager at Kalzip, explains why aluminium may be the perfect solution above all else.

A more affordable roofing material?

Cost is something that simply cannot be overlooked when it comes to specifying for buildings, and in this area, aluminium is tough to compete with. Compared to zinc, aluminium is generally more affordable both in terms of material cost and installation expenses, making it a much more attractive option, particularly when installing multiple roofs, or roofs with a large surface area.



The lightweight nature of aluminium makes it a dream to work with during installation. Its low density simplifies transportation, reduces structural requirements, and eases the burden on the underlying building structure. This advantage not only streamlines the installation process but also opens up opportunities for installation on a wider range of structures. Aluminium roofs are a particularly suitable choice for retrofit projects where weight considerations are . We offer various thickness options: FalZinc 0.7mm/1.0mm and Kalzip AluPlusZinc.

Impressive Durability

Durability is a crucial factor when evaluating roofing materials, and aluminium excels in this domain. It boasts remarkable resistance to corrosion, ensuring that it withstands the test of time even in harsh environmental conditions – especially useful for projects in locations. Aluminium roofs offer excellent durability and can function as intended from  25 to 50 years and beyond, providing reliable protection and peace of mind. This longevity translates into cost savings over the roof’s lifespan, as fewer repairs and replacements are required.


Low Maintenance

Aluminium offers building managers a much lower level of maintenance requirements, unlike Zinc, which actually requires periodic inspections of the patina that zinc develops. The natural oxide layer that forms on the surface of aluminium acts as a protective barrier, preventing further oxidation and corrosion. This attribute not only saves time and effort but also minimises maintenance costs over the roof’s lifespan. Ultimately, a roof that offers hassle-free care means one less thing to worry about over the course of its lifetime.


Versatility and Design Flexibility

Aluminium’s malleability opens a world of design possibilities, making it an architect’s dream. Its flexibility allows for various roof configurations and complex designs. Whether it’s a curved roof, intricate detailing, or unique architectural styles, aluminium can be easily shaped and formed to meet the desired vision. This versatility ensures that aluminium roofs seamlessly integrate with the overall aesthetic of any structure. In fact, in a recent project from Kalzip, an aluminium roof resembling the shape of an avocado was achieved, complete with a central cut out to allow lighting over a grove below.


Energy Efficiency and Sustainability

Aluminium roofs contribute to energy efficiency and sustainability goals. Their reflective properties help reduce heat absorption, keeping the interior cooler and reducing the reliance on air conditioning systems. Additionally, aluminium is a recyclable material, making it an environmentally friendly choice. Recycled aluminium retains its original properties, reducing the need for virgin materials and conserving valuable resources. Beyond that, we offer a fully roof-integrated solar solution and a NatureRoof system to fulfil our sustainable product range.

Kalzip is one of the leading suppliers of aluminium building envelopes, producing roof and facade systems on state-of-the-art roll forming machines since 1968. To date, more than 100 million square metres of Kalzip profiled sheets have been installed worldwide.

Kalzip building systems meet the highest standards in terms of building physics and design for the realisation of roofs and facades which are both functional and visually fascinating. Discover the innovative and creative possibilities of Kalzip building envelopes and be inspired by the durable and versatile system solutions that Kalzip offers by visiting