K2 mounting kit for flat roof - 10 panels

On a flat roof you cannot drill through the roofing without risking leaks, so the panels sit on a frame held in place by its own weight. The kit gathers into a single set the K2 parts needed for ten panels: the rails the modules rest on, the supports that raise them to an angle, the clamps and the rubber pads that protect the waterproofing. Nothing pierces the membrane - the structure is stabilised by ballast, that is by concrete slabs or bricks placed in the supports.

Ten modules mean, as a guide, an installation of about 4-6 kWp, the typical size for a house or for an apartment with its own terrace. The set is based on K2 Dome 6 components: BasicRail 22 rails, Dome SD front supports, Dome Peak elevation elements in the 10 or 15 degree version, DomeClamp clamps for 30-50 mm frames, MK2 sliding nuts, M8x20 stainless steel bolts and EPDM Dome Mat S pads under the support points. Being made of aluminium and stainless steel, the structure requires no maintenance and produces no galvanic corrosion in contact with the aluminium frames of the panels. It can be installed on bitumen, synthetic membrane, concrete, trapezoidal sheet metal or green roof.

Components made of EN AW-6063 T66 aluminium, stainless steel and EPDM; the K2 Dome 6 system, in the 6.10 and 6.15 versions, holds general technical approval abZ no. Z-14.4-916. The exact configuration - tilt angle, number of wind deflectors, quantity of ballast, Dome Porter or SpeedPorter support type - is established for each project, depending on the module size, the wind and snow zone, the building height and the load-bearing capacity of the roof. The sizing and the structural calculation report are issued in the K2 Base application; the product warranty for original components is 12 years, extendable to 20 years through K2 Base and K2 DocuApp.

Who it suits

Suitable for the flat roof of an apartment block, house or commercial building where the waterproofing cannot be perforated and an installation of about 4-6 kWp with components delivered as a set is wanted.

Terms explained

• Ballasted structure: The support is not bolted into the roof, but held in place by a weight laid over it - usually concrete slabs.
• kWp: The maximum power of the installation under ideal sun conditions; 4-6 kWp is the usual size for a home.
• Galvanic corrosion: The damage that occurs when two different metals touch in the presence of water; it is avoided by using aluminium and stainless steel next to the aluminium frames of the panels.

Technical specifications

Recommended applications

• Residential photovoltaic installations of about 4-6 kWp on the flat roof of an apartment block or house
• System extensions on commercial flat roofs
• Projects where the waterproofing cannot be perforated
• Fast installation, with all the necessary K2 components delivered in a single set

Warranty

12 years K2 Systems product warranty for original components, extendable to 20 years through sizing in K2 Base and documentation in K2 DocuApp

Technical details

Generic product — standard specifications

The kit is a ballasted structure set configured on the components of the K2 Dome 6 system, sized for mounting 10 photovoltaic modules on a flat roof. Such a set usually contains the BasicRail 22 carrier rails, the Dome SD front support elements and the Dome Peak elevation elements (in the 10 or 15 degree version), the DomeClamp 30-50 mm mid and end clamps, the MK2 sliding nuts, the M8x20 stainless steel bolts and the EPDM Dome Mat S protection pads that protect the waterproofing.

The mounting principle is that of the Dome 6 system: the structure does not perforate the roof covering, but is stabilised by ballast (concrete slabs or bricks) placed on the Dome Porter / SpeedPorter supports. The metal components are made of EN AW-6063 T66 aluminium and stainless steel, so the set requires no maintenance and presents no risk of galvanic corrosion in contact with the aluminium frames of the panels.

The exact composition of the kit (tilt angle, number of wind deflectors, quantity of ballast, type of ballast support) must be established for each individual project, depending on the module size, the wind and snow zone, the building height and the load-bearing capacity of the roof. K2 provides the K2 Base sizing application, which also issues the structural calculation report; the Dome 6 system holds general technical approval abZ no. Z-14.4-916.