With ballast
- Ideal for flat and slightly sloping roofs
- Possibility to link over the ridge
- No perforation of the waterproof roofing
- Ballast can be placed both under and inside the system
![Steel profiles for FlexRoof, solar mounting system for rooftops.](/vamf_assets/var/site/storage/images/_aliases/content_img_medium/media-library/pictures/voestalpine-sadef-nv/solar/solar-flexroof/292276-1-eng-GB/Solar-Flexroof.jpg)
Free span
- For roofs that may only be supported on the trusses or purlins
- No perforation of the waterproof roofing
- Ballast must be calculated in the context of a project
![Steel Profiles for solar rooftop systems](/vamf_assets/var/site/storage/images/_aliases/content_img_medium/media-library/pictures/voestalpine-sadef-nv/solar/solar-roof-ballasted/292281-1-eng-GB/Solar-roof-ballasted.jpg)
Vulcanised
- Roofs with limited bearing strength
- No use of ballast
- Without perforating the waterproof roofing
- Can also be used locally to prevent shearing
![steel profiles for solar structures for rooftops](/vamf_assets/var/site/storage/images/_aliases/content_img_medium/media-library/pictures/voestalpine-sadef-nv/solar/solar-roof-vulcanised/292286-1-eng-GB/Solar-Roof-vulcanised.jpg)
Anchored
- For flat and sloping roofs
- Assembly application soft roofs, roofs that permit little or no extra load
- Assembly on very high buildings
- Anchoring with a limited number of perforations
![Steel profiles for roof top solar structures](/vamf_assets/var/site/storage/images/_aliases/content_img_medium/media-library/pictures/voestalpine-sadef-nv/solar/solar-roof-anchored/292271-1-eng-GB/Solar-Roof-Anchored.jpg)