Rooftops and aluminum as the material of the future

The choice of roofing material is influenced by the location of the property. Although the Czech Republic belongs to a temperate climate zone, the average snow load value here is between 56 – 160 kg of snow per m2, which corresponds to a layer of wet snow that is 14 – 40 cm thick. In mountainous areas, it is obviously much more. Building regulations must also be respected. These set, for example, the minimum roof slope or the number and composition of safety elements.

Aluminum – the material of the future

Prefa Pinical

Aluminum has been widely used in the shipping, aviation, and automotive industries for over a hundred years due to its durability, stability, and other advantages. The fact that it is increasingly finding applications in the area of roofing materials is not a coincidence, but a reaction to the growing demands for quality, economy, and safety.

Aluminum roofs are low maintenance. They are also frost-resistant, corrosion-resistant, and do not crack even in extreme weather conditions. The Prefa aluminum roof is strong and durable, yet weighs only 2.3 – 2.6 kg/m2, which is just a fraction of the weight of regular clay or concrete tiles (approximately 35 – 55 kg/m2). It can withstand a load of 800 kg per m2, resist wind gusts of up to 235 km/h, and thanks to the installation method, interlocking folded tiles can be installed with a slope as low as 12° (flat sheets even from 5°). This is why aluminum roofs are increasingly used in alpine areas, where they withstand extreme weather conditions much better than traditional roofing materials.



Surface Innovation
As the environment keeps changing, the load from UV radiation, large temperature fluctuations, strong winds, acid rain, high amounts of precipitation, and chemically aggressive atmospheres increases. For these conditions, Prefa has created a surface treatment for roofing with the name P.10. The innovation lies in the treatment of interlocking tiles, interlocking shingles, and interlocking slates through high-quality and durable two-layer firing of paint in twenty work steps, using a method called Coil-Coating. Additionally, the painted layer is eco-friendly, as it contains no heavy metals. The new surface provides even better protection against UV radiation than other materials.

Prefa Falzonal

The construction of a roof, for example, made from aluminum interlocking tiles, is, therefore, the result of a technologically quite demanding production process. However, aluminum is a practical, lightweight, and cost-effective material with a very long lifespan. www.prefa.com