sigma-RR  & sigma -RW flat roof

Sigma -RR & sigma -RW flat roof panels can satisfy the demands in terms of thermal & sound insulation and water tightness of roofs with minimum slope 1,20%.They are also ideal for curved and not rectangular designed roofs, providing to the architects unlimited design freedom.
They are self-supporting composite components, manufactured with non-combustible mineral wool core,that combines both excellent mechanical properties and high thermal insulation, enclosed by two steel shaped sheets.
PVC membrane is laminated to the external steel sheet and at the point of the panels’ fixation a PVC membrane strip of 225mm width, is applied.
The strip is hot air welded on the site from specialized staff, using the adequate welding machine.