Gemello systems are self-supporting twin skin systems for roofing and cladding. The external profiles have clean, sharp lines and are available in an extensive range of finishes and colours enabling designers to create modern, visually-engaging buildings.
The attractive and durable properties of the Gemello systems make Gemello suitable for projects across many market sectors including industrial, retail, office, health, education, leisure and agricultural. The Gemello systems are ideal for roofing and cladding steel framed buildings and can be fully integrated with both modern and traditional methods of construction.
Gemello systems consist of profiled steel inner and outer sheet with non-combustible mineral/rock fibre insulation between to provide excellent properties:-
Acoustics - Thermal - Structural - Fire
System integrity is backed by the Gemello guarantee.
In addition to the roof and wall profiles, SIG companies manufacture and supply a comprehensive range of accessories and components such as rooflights, gutters, flashings and fabrications to provide the complete cladding system.
Gemello roof and wall systems combine intrinsic structural strength with design flexibility. Gemello systems can be tailored to suit the aesthetic, acoustic, thermal, fire and loading requirements of a building application.
Roof system assembly:
• 0.7mm steel top sheet.
• Spacer system.
• Mineral wool insulation with 10% compression.
• 0.7mm steel liner, sealed as vcl and air barrier.
Gemello trapezoidal roof and wall systems include 5 roof, 5 wall and 6 liner profile options with 1000mm cover widths. All roof profiles are non-fragile to ACR[M]001 Class B.
In addition 4 sinusoidal feature-cladding wall profiles are available.
Systems provide U-values down to 0.14W/m2K and will self-span to 1.8m.
The vapour and air barriers are formed by sealing the profiled steel liner at laps, perimeters and at all penetrations.
The insulation cavity is formed by an engineered bar and bracket spacer system and filled using non-combustible mineral fibre insulation under 10% compression.
Weatherproof joints in the external skin are formed by sealing the lapped edges using flexible and durable butyl rubber seals.
Long term structural integrity of the systems is ensured by the use of stainless steel fasteners with bonded rubber sealing washers.
The Gemello system guarantee is available for the complete Gemello system.
Site assembled in-plane rooflights to match the Gemello roof systems are available providing high quality natural daylighting.
Rooflights reduce the need for artificial light, saving energy and reducing the carbon footprint of an industrial building.
A complete range of gutters and rain water goods are manufactured and supplied to order to meet the specific requirements of individual projects. Gutters are fabricated in a variety of materials including aluminium, pre-galvanised steel, pre-coated steel with a PVC finish, and membrane lined gutters, to suit the designer’s needs. Insulated membrane lined gutters are available for designs where gutters form part of the insulated building envelope and the integrity and durability of fully sealed joints is required. The steel backed membrane is textured for slip resistance where the gutter forms an access way on a roof.
Flashings are manufactured to a customer’s design in finishes to either match the roof / wall cladding or to form a contrasting feature on the building.
Aluminium fabrications to create more architectural building features such as bullnoses, fascias and cappings with concealed or secret fix methods of attachment are made to order and polyester powder coated to the specified RAL colour.
Fasteners, fillers & sealants
Sealants, profiled fillers, fasteners and spacer systems are supplied by SIG companies (and must be used for Gemello Guarantee systems).