Patented lightweight substructure with 5° inclination, adhesive and testing technology for PV on flat roofs.
SOLCLIV GmbH
Wardenburg · OldenburgNew on Amplifa
Roofing expertise and photovoltaics
SOLCLIV GmbH develops, manufactures and distributes lightweight substructure systems and components for photovoltaic installations, especially for statically limited industrial and commercial roofs with low load reserves. The patented substructure SOLCLIV 1.0 and 2.0 is based on a 5° wedge system made of 100 % recycled plastic and is permanently bonded — entirely without roof penetration and without ballasting. With only 0.5 kg/m² of additional load (approx. 3.2–3.4 kg/m² including the lightweight module), it enables an economical PV layout on sensitive flat-roof membranes made of bitumen, PVC, TPO/FPO or EPDM. In addition to planning, manufacturing and distribution of the system, the company offers roof inspections prior to installation, object-specific pull-off tests on the respective roof surface, independent expert reports and damage analysis by master roofers and experts for building waterproofing. The company is based in Wardenburg near Oldenburg and operates throughout Germany with tested, CE- and ETA-certified components for flat-roof photovoltaics.
- Site
- Wardenburg
- Processes
- PV mounting system SOLCLIV 1.0 & 2.0 (substructure for lightweight modules, 5° wedge system, bonded), Adhesive bonding / bonding technology (SOLCLIV adhesive, high-performance adhesive tape for, Roof inspection / roof assessment prior to PV installation (including object-specific pull-off, Planning & consulting / expert reports for PV roof projects, Manufacturing of substructure systems and components for photovoltaic installations, Planning of project-specific substructures, Roof inspection prior to installation (load-bearing capacity, waterproofing, solar suitability), Independent expert reports & evidence preservation by the company's own experts
- Materials
- Recycled plastic (100 % recycled raw material basis), Bitumen roof membrane, TPO/FPO roof membrane, PVC roof membrane, EPDM roof membrane, PIR safety insulation board with FPO waterproofing, 100 % recycled plastic, SOLCLIV adhesive / high-performance adhesive tape
- Certificates
- CE certification (wedges and profiles), ETA certification (wedges and profiles), EPD documentation, ISO 9001
- Industries
- Photovoltaics, Commercial and industrial roofs / flat roofs, Roofing trade / building waterproofing
- 01
Roof inspection and object-specific pull-off tests
- 02
Planning of the project-specific substructure
- 03
Manufacturing of system components from recycled plastic
- 04
Project-specific documentation
- 05
Installation by system partners (training and support)
- 06
Construction management and quality assurance
Materials and processes
100 % recycled plastic
Raw material basis of the wedges and L-profiles of the substructure with high compressive strength and moisture resistance; CE- and ETA-certified with EPD documentation.
Bitumen roof membrane
Substrate for adhesive bonding on which object-specific pull-off tests of over 700 N were achieved.
TPO/FPO roof membrane
Waterproofing membrane for which a high-performance adhesive tape option with tested adhesive strength is available.
PVC roof membrane
Compatible roof membrane type for the bonded fastening of the substructure.
EPDM roof membrane
Compatible roof membrane type for the adhesive bond of the system.
PIR safety insulation board with FPO waterproofing
Roof build-up on which the adhesive bond was successfully tested up to 55 kgf (test limit 63 kgf) without detachment of the adhesive joint.
SOLCLIV adhesive / high-performance adhesive tape
Durable, penetration-free bonding technology for the various roof membrane types.
Locations
Wardenburg
DEHeadquarters with planning, development and sales
- Materials
- 100 % recycled plastic
Oldenburg
DELocation (per JSON-LD, Wacholderweg 11)
System components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| PV mounting system SOLCLIV 1.0 & 2.0 (substructure for lightweight modules, 5° wedge system, bonded)Assembly | – | – | – | – | – |
| Adhesive bonding / bonding technology (SOLCLIV adhesive, high-performance adhesive tape forJoining | – | – | – | – | Bitumen, TPO/FPO, PVC, EPDM, PIR safety insulation board |
| Roof inspection / roof assessment prior to PV installation (including object-specific pull-offTesting | – | – | – | – | – |
| Planning & consulting / expert reports for PV roof projectsEngineering | – | – | – | – | – |
| Manufacturing of substructure systems and components for photovoltaic installationsAssembly | – | – | – | – | – |
Additional services
Certification and testing
Wedges and profiles are CE- and ETA-certified with EPD documentation. Practical tests of the adhesive bond (pull-off tests on bitumen over 700 N, testing on PIR/FPO insulation board up to 63 kgf), supplemented by tests from institutes such as Kiwa as well as object-specific tests by the company's own master roofers and experts for building waterproofing.
| Evidence | Wardenburg |
|---|---|
| CE certification (wedges and profiles) | |
| ETA certification (wedges and profiles) | |
| EPD documentation | |
| ISO 9001 |
History
- 2025
Market launch with the SOLCLIV 1.0 substructure (flyer © 2025); imprint as of October 2025
- 2026
Pull-off tests on bitumen with over 700 N; practical test of the adhesive bond on PIR safety insulation board (FPO) on 29.05.2026 successful; regeneration project accepted