Flat Roof

PV mounting systems for use on flat roofs avoiding penetrations to the roof.

    FixGrid Pro

    FixGrid Pro is a modular flat-roof ballasted mounting system suitable for both South facing and East-West orientation. The angle of inclination is easily adjusted using just a few components.

    • Ballast optimization and reduction through improved aerodynamics
    • Flexible and time-saving planning and assembly
    • Compatible with module clamps from the ProLine series
    • Tool-free assembly of the heightening elements
    • Modules can be mounted portrait or landscape and clamped either on the short or long side
    • Possible module inclination of 5/10/15 degrees, independent of module clamping, orientation, and size
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    Note: The required ballast is determined using the Schletter configuration tool. This can vary greatly with flat roof systems.

    As standard, concrete blocks are used as ballast and are distributed on the base rails; ballast +rails can be used for extra ballast blocks or gravel troughs can be used for additional requirements.



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    The FixGrid kit ballasted flat roof mounting combines simple and fast assembly with a capability of withstanding high wind and snow loads, making it even suitable for places exposed to extreme weather.

    The high level of pre-assembly means less manual labour at the construction site to install the system. All that is left to do is to install the centre supports (for the east-west direction) or the upper FixZ profiles (for the south direction) and fasten the module clamps.

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    A one-turn connector allows fastening without tools, which speeds up installation even more. Just twist into the click channel and the upper module support is installed. If necessary, for higher wind loadings, additional trays must be attached to accommodate the ballast.

    For the east-west systems, kits for two or three module pairs are available.
    For solutions set up in a southerly direction, two or three rows one behind the other are possible, so that the row structure is always retained and the desired module configurations can be achieved.
    System kits can then be put together to allow any module configuration desired to be created.

    There are different possibilities for ballast installation:

    • Ballast with concrete stones 100 mm wide on the base rails
    • Ballast with additional troughs 
    • Ballast with standing lawn edging stones on the Windsafe
    • Ballast with additional ballast trays

    or a combination of the above.

    Note: The required ballast is determined using the Schletter configuration tool.

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    Single Panel Flat Roof Mounts