Universal fastening system roof-integrated photovoltaic panels

Simple and fast installation, aesthetics, light weight, water resistance, and inexpensive

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The integrated photovoltaic panel system is designed by installers for installers and offers significant advantages

Advantages of the GSE IN-ROOF SYSTEM™

Certified and guaranteed for 15 years

Designed and manufactured in France, the GSE IN-ROOF SYSTEM™ is reliable and watertight. Tested in extreme conditions, the product is certified by various European bodies.

Totally watertight system

PV system and roof guaranteed to be totally watertight

Most aesthetic

When replacing tiles or slates, the GSE IN-ROOF SYSTEM™ provides the best aesthetic integration of solar panels in roofs with no surplus thickness.


  • Adapts to all sloping roofs and the majority of photovoltaic solar panels on the market
  • Our 50+ panel references, allow the integration of panels ranging from 808mm wide to 1990mm high and will continue to evolve in 2023 to accompany new solar cell technologies
  • Integration system available for the major roof window brands: VELUX, ROTO, FAKRO.

The GSE IN-ROOF SYSTEM™ offers the possibility of choosing photovoltaic modules with technologies that best suit your projects and integrating them in portrait or landscape format in the roof, including when roof windows are fitted.


The most economical BIPV system on the market, the GSE IN-ROOF SYSTEM™ is the most competitive and certified building integrated solution for residential new builds.

Operational advantages when fitting

  • With no risk of error, the patented system is assembled by interlocking the various parts, which fit together precisely without cutting or joining.
  • Quick to use: 8- to 16-module system installed in a day.
  • Lightweight (2,5 to 3,5 kg/m²) and easy to transport.
  • Flexible, adapts to all roofing configurations:
  • The system may be installed in portrait or landscape format.
  • All types of desired configuration (U-shaped, pyramid, etc.)
  • Specific flashing developed for the technical needs of different markets.

Reliable and resistant

  • The GSE IN-ROOF SYSTEM™ has been designed to offer the same resistance and longevity as normal roof coverings like tiles, slates or zinc.
  • Very important mechanical resistance, compatible with all snow and wind zones:
  • Downward pressure: 5400 Pa (IEC 61215)
  • Upward pressure: up to 5500 Pa (NF EN 12179)
  • Eurocode design values: Snow: 1800 Pa, Wind: 1700 Pa
  • Impact resistance: the quality of the polypropylene used in the French manufacturing plants and the multiple tests at the CSTB have proven the durability of the system.
  • GSE Intégration benefits from the know-how of its parent company TERREAL which consolidates over 150 years of experience and expertise in the manufacture of tiles.


Here you will find all the necessary information and documentation, as well as installation manuals for the GSE IN-ROOF SYSTEM™, certificates, including video reviews

Compatibility of GSE IN-ROOF SYSTEM™ with roof windows

The world leaders in the development and production of roof windows have chosen the GSE IN-ROOM SYSTEM™ for optimal use of the roof with solar panels for maximum energy generation

Integration of VELUX roof windows with the GSE IN-ROOF SYSTEM™

VELUX Solar Integrator ODL

Together towards energy independence

Integration of FAKRO roof windows with the GSE IN-ROOF SYSTEM™


Sustainability and comfort in one PV system
Roto Windows

Integration of ROTO roof windows with the GSE IN-ROOF SYSTEM™

Roto Roof Window Integration

The perfect stable combination

Do you want to know the cost of GSE IN-ROOF SYSTEM™ for your project?

Use the calculator to calculate the appropriate option for your project, the cost of integrating the system with all accessories and components

At the moment, the calculator works in eight language versions – French, German, English, Dutch, Hungarian, Czech, Polish and Russian.

Use the manual for working with the calculator for faster and more convenient calculation of your project.


Fill out the online form and we will calculate the cost of GSE IN-ROOF SYSTEM™ for your project
For the lazy


Now, the system is compatible with PV modules up to 2180 mm in height and 1305 mm in width


Now, the system is compatible with PV modules up to 2180 mm in height and 1305 mm in width

Do you still have questions?

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