Secure against rain and storms, and designed for quick and error-free installation, the latest mounting solutions enable faster mounting of solar modules on pitched roofs without compromising roof integrity.
K2 Systems – new ideas for solar mounting (video)
For installers, mounting PV on pitched roofs is routine, but regulations are tightening to ensure watertightness and roof protection. Cutting roof tiles in place is now prohibited on pitches of 15 degrees or less – a move welcomed by many, given the mess and hassle that is often involved in such tasks.
Delta panel and metal tile innovations
Roof replacement panels are now widely used for pitched roofs. SL Rack’s new Delta panel, launched at Intersolar, is tailored for folded tiles and works with common profiles such as the Frankfurt pan. It features an integrated, height-adjustable roof hook and rear metal plate, allowing attachment with a single screw. “This saves time compared to our Alpha model,” says Ludwig M. Schletter, SL Rack’s Business Development lead. The design helps compensate for uneven surfaces and offers the same flexibility as the company’s universal aluminium replacement plate.
Smarter clamping and faster rail installation
SL Rack has also revamped its metal roof tile and clamp range. The new metal tile anchors to the rafter and is available in multiple sizes. Its improved clamp features a larger screw head for speed and stability: “The larger head ensures that the clamp no longer twists or buckles so easily during installation,” says Schletter. The modified angle between the push-on plate and clamp body keeps the module in place and allows for easier movement along the rail before tightening.
Solar Investors Guide – mounting on trickier terrain
Trapezoidal roof fasteners
For trapezoidal sheet metal roofs, SL Rack’s Trapez 6 clamp streamlines rail mounting. Made from EPDM, it self-seals around the screw and absorbs thermal expansion. Trapez 6 is UV-resistant by default and can be paired with a metal cover for extra protection in exposed settings.
Clip and adapter solutions for metal and imitation tiles
K2 Systems has introduced a new adapter for installing on sheet metal tiles, common in northern and eastern Europe. “Hanger bolts aren’t ideal in these cases as they can compromise the seal,” says Lars Kreemke, K2’s Head of Inside Sales. The new EPDM adapter sits beneath K2’s Basicclip and provides a watertight seal, tailored to curved tile profiles. The system’s Flex Adapter compensates for pitch differences up to eight degrees and can be used with barrel and standing seam roofs.
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Direct-to-sheet mounting enables both horizontal and vertical module placement, and the solution suits corrugated metal roofs as well. Overlapping imitation tiles, often causing unevenness, are addressed by the Flex Adapter’s ability to level out the rail.
Anchoring for flat and membrane roofs
Novotegra’s solution for slightly pitched or flat roofs with bitumen or membrane sealing enables direct attachment using established anchor plates. “Anchor plates are available for screwing, gluing or welding onto membranes,” says Alexander Pfeifer, Technical Product Manager at Novotegra. Their C-rail attaches directly, with anchor plates replacing roof hooks.
Digital planning streamlines installation
Novotegra’s Solar-Planit tool maps out exactly how many anchors are needed, factoring in certified values from plate manufacturers. Installers can then order precisely what’s required, supporting efficient and watertight installations. Pfeifer emphasises that for best results, roofers should install anchor plates before PV work begins.
K2 Systems expands Insertionrail system for trapezoidal sheet roofs
Mounting tech is advancing quickly to meet tougher rules and installer needs. If current momentum is anything to go by, the next generation of smarter solutions won’t be far behind! (TF)
