The K2 MultiRail High mounting system is a one-piece elevated solution with a height of 100mm, specifically designed to improve rear ventilation on metal roofs. K2 Systems says that increasing the distance between the modules and the metal roof surface improves airflow and reduces module temperatures, which can translate into higher annual energy yield.
German PV mounting specialist K2 systems has introduced a new mounting solution designed for trapezoidal and corrugated roofs.
The new product, known as K2 MultiRail High, is a one-piece mounting solution made of aluminum with a height of 100 mm. It is designed for direct mounting in horizontal module direction and is available in two versions: the MultiRail High for trapezoidal sheet and MultiRail High CSM for corrugated sheet roofs.
A statement from the company explains that in regions with high ambient temperatures, PV systems installed on trapezoidal and corrugated roofs often require a greater distance between the modules and the roof surface.
By creating a larger air gap between the roof and the modules, the MultiRail High is designed to improve airflow, support natural convection and contribute to lowering the temperature at the rear of the module. K2 Systems says this reduces temperature-related efficiency losses and therefore increases annual yield gains, while also providing additional installation space for components such as microinverters or optimizers.
“In markets with high ambient temperatures, we repeatedly see a need for improved rear ventilation on metal roofs,” explains Dieter Hardock, Head of Product Management at K2 Systems. “With the MultiRail High we offer a structurally simple solution that creates extra space and keeps the installation streamlined.”
The product is 150mm long and is fixed directly to the roof using four thread forming sheet metal screws. In addition, it has an EPDM seal that guarantees reliable watertightness at the mounting points. The company says the one-piece design helps significantly reduce installation time compared to using a combination of base rails and height adapters.
The MultiRail High is an extension of K2’s existing portfolio, which already offers a solution to increase the support surface of the module via the MiniRail 60, specially designed for sheet steel roofs. The company adds that the RailUp solution remains available and can be used with all K2 rails.
K2’s latest product launch follows the introduction of two new pitched roof mounting components, the SingleHook 3S Light and InsertionRail 2.0, announced last July.
This content is copyrighted and may not be reused. If you would like to collaborate with us and reuse some of our content, please contact: editors@pv-magazine.com.
