COMPACTFLAT SN 2 is our rail-based mounting system for PV installations on flat roofs. It supports short-side and long-side clamping, three rail configurations, and south and east-west orientations; depending on the variant, the tilt angle can be set to 5 or 10 degrees. In addition to the versions for horizontally mounted modules, the SN 2 Q PLUS offers an east-west variant for portrait orientation. The system is designed for modules up to 2,500 × 1,310 millimeters and for high wind and snow loads. Wind tunnel tested and CE marked.

Whenever your project requires variations. COMPACTFLAT S is the compact rail system for standard layouts with few parts. SN FAST is optimized for speed, but is fixed at an east-west orientation of 10 degrees and a module width of 1,134 millimeters. S_BASE really shines when load-bearing capacity is limited and large module arrays are required. SN 2 is the system that bridges the gap: It covers south and east-west orientations, both clamping types, three rail configurations, and modules up to 2,500 × 1,310 millimeters—making it the ideal choice when a roof has multiple requirements at once or the module format differs from the standard.

Two clamping options can be freely combined with three rail configurations, plus south and east-west orientations. This provides a range of applications that would otherwise require multiple systems—while using virtually the same set of components. For your warehouse, this means fewer part numbers per project type covered; for the construction site, it means fewer parts to sort and a lower risk of mix-ups.

About the foot rocker. It comes pre-assembled and can be continuously adjusted to the angle that matches the respective module width—so you don’t have to set it up differently for each module format. Two grooves in the rocker accommodate either short-side or long-side clamping and simultaneously compensate for tolerances during assembly; spring elements hold the rocker in position while the module is being inserted. The system is designed to accommodate modules up to 2,500 × 1,310 millimeters.

Only one installer is needed to install the modules. This is made possible by pre-assembled components based on the plug-and-play principle and by the spring elements in the foot rocker, which hold the module in place during positioning. Alignment gauges measuring 2,500 and 1,980 millimeters are available for aligning the base rails.

When the insulation is soft or additional ballast needs to be installed. The 173-millimeter-wide base rail is fully covered with protection pads and distributes the support forces over a larger area. On roofs with soft insulation, such as Rockwool’s Durock, this allows for snow loads of up to 3.6 kN/m² to be supported. Ballast angle profiles support the ballast and can be continuously adjusted to the module length, allowing the system to be pre-assembled even without modules.

An anchor fastening may be considered if the structure is not to be secured in place exclusively by stone ballast or if the required ballast must be reduced. Depending on the anchor design, single-anchor fasteners can also be retrofitted alongside the standard rail. For double-anchor fasteners, three lengths and a reinforced version are available. The specific design required depends on the roof structure, loads, and project planning.

The base rail supports pre-mounted pads. Spacer pads compensate for unevenness or serve as additional drainage. The feet are structurally designed to withstand high snow and wind loads and accommodate different module widths via the foot rocker. The universal click clamps with integrated grounding pins are height-adjustable between 30 and 46 millimeters and can be snapped into place.

The product brochure is available for preliminary selection, the intake form for project preparation, and the bid template for the request for proposals. Variant-specific assembly instructions are provided for installation; the instructions for the variant actually planned are authoritative. In addition, there are documents for measuring the coefficient of static friction and for determining the design load and insulation pressure. Not sure which variant is right for your roof? Send us details on your roof structure, insulation, module type, and location via the inquiry form or to office@aerocompact.com.

About the WCL8-10 Wire Clamp and the Flexible Jumper Strip. The wire clamp establishes a conductive connection to integrate the system into the lightning protection system. The flexible jumper tape is used to establish equipotential bonding and ensure lightning current-carrying capacity within the system. The specific integration depends on the building’s lightning protection design.