# S-5! launches the PVKIT 3.0 rail-less mounting system for metal roofs

- Published: 2026-11-06 15:20 UTC
- Section: Power & Energy › Energy
- Tags: S-5! PVKIT 3.0, rail-less solar mounting, metal roof solar installation, module-level power electronics, DirectAttach mounting
- URL: https://realtech.media/news/rt-755a99ea0db95eb311c2e2ef_s_5_launches/

**The commercial hardware enables direct-attach solar module mounting with an optional 50 mm clearance gap for roof electronics.**

![S-5! launches the PVKIT 3.0 rail-less mounting system for metal roofs](https://sgzwpqqelzmajkcubgkl.supabase.co/storage/v1/object/public/rt-media/2026/11/c8808f9249748274.jpg)
*Architectsea, Wikimedia Commons, CC BY-SA 3.0*

US manufacturer S-5! has unveiled the PVKIT 3.0, a height-adjustable, rail-less solar mounting system designed specifically for metal roofs, according to pv-magazine.com [1]. The commercial solution addresses the spatial requirements of rooftop photovoltaic installations that incorporate module-level power electronics (MLPE), such as power optimizers and microinverters, alongside complex cable management networks [1].

## Clearance options and direct attachment

The PVKIT 3.0 functions as a direct-attach hardware system when paired with the company's proprietary metal clamps and brackets [1]. For standing-seam and concealed-fastener roofs, the installation process maintains roof integrity via non-penetrating mechanical attachments [1]. The manufacturer introduced two operational configurations: a standard profile for flush installation close to the roof deck, and an elevated profile that introduces a fixed 50 mm clearance beneath the array [1].

According to technical specifications published by S-5!, frame compatibility varies depending on the chosen configuration [1]. The standard setup accepts solar module frame thicknesses between 28 mm and 35 mm [1]. The elevated configuration with the 50 mm clearance accepts panel frames ranging from 25 mm to 35 mm, providing room for under-module airflow and hardware placement [1].

## Mechanical properties and logistics

The direct-attach approach eliminates conventional mounting rails entirely, removing the need for on-site metal cutting during deployment [1]. The manufacturer states that the design reduces total mounting system weight, physical volume, and manufacturing carbon footprint by up to 85% compared to traditional rail installations [1]. The engineering layout also reduces point load distribution onto the underlying roof structure by 25% [1].

To simplify electrical integration and physical installation, the assemblies are delivered pre-assembled and require a single tool for roof attachment [1]. Electrical bonding between adjacent aluminum frames relies on integrated stainless steel grounding teeth, which establish continuity directly through the module coatings [1]. The company ships the hardware with corrosion-resistant components backed by a lifetime warranty [1].

## Sources

1. [pv-magazine.com](https://www.pv-magazine.com/2026/11/06/s-5-presents-height-adjustable-mounting-system-for-pv-modules-on-metal-roofs)

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Source: RealTech, realtech.media — https://realtech.media/news/rt-755a99ea0db95eb311c2e2ef_s_5_launches/