Secure hold for photovoltaic facade

Energetic renovation of a Sicily residential complex

Secure hold for photovoltaic facade
References
Photovoltaic panels were used to clad the back-ventilated facade as part of the extensive energetic renovation of the “Il Palazzetto” residential complex in the metropolitan city of Palermo (Sicilia). Thanks to fischer BWM facade systems and fischer heavy-duty fastenings, the photovoltaic system is permanently secured. The fastening specialist also supported its clients as a project partner from the design phase through pull-out tests and on-site assembly to the successful completion of the project.

Property description

Construction time
2022 July – 2023 July
Engineering firm
ENNETI S.r.l. (Termini Imerese/Milan)
Geographical region
Imerese term
Building contractors
Opera S. r. l. (Sicily)
6 cm thick EPS (expanded polystyrene) panels were used throughout the building envelope for thermal insulation. The original doors and windows without thermal separation were replaced by PVC doors and windows with 6 air chambers in the profiles and double glazing with 90% argon filling. Each apartment was equipped with split air/water heat pumps for heating, cooling and hot water production. In addition, each residential unit was equipped with a photovoltaic system with an output of 4 kilowatts (kW). This consists of the material monocrystalline silicon, which has the ability to absorb radiation and is used in the production of photovoltaic cells. Each apartment was also equipped with an additional 6 kW energy storage unit. In addition, a 10 kW photovoltaic system with 10 kW storage was installed for the building’s common areas to reduce energy consumption.
One special feature of the “Palazzetto project” was the installation of the photovoltaic system on two vertical walls of the building envelope. The photovoltaic panels were used as cladding and the principle of the “rear-ventilated facade” was used. The fisher BWM vertical profiles ATK 100 Minor VPT were used for assembly. These have been inserted into fischer BWM 150 LFH and 80 LSH wall brackets with thermostops. The facade builders mounted horizontal profiles on the ATK vertical profiles and fastened the cladding to them. In addition, the Fischer FAZ II Plus bolt anchor and Fischer injection systems as well as Fischer accessories for the facade design were installed. ENNETI S.r.l. (Termini Imerese/Milan) was responsible for the engineering work on the project. The company specialises in engineering, construction projects and building maintenance services. It was founded in 2020 by Vincenzo Torregrossa and Pierpaolo Notaro. Both have extensive experience in integrated engineering planning and facility management services, among other things. 
The renovation is the result of careful planning decisions and requires special expertise in the energy sector. Several critical factors were considered, including thermal expansion, wind impact and tensile strength, which prompted us to choose reliable and robust products like those from fischer.
Vincenzo Torregrossa (Founder ENNETI S.r.l.)
The project is part of a larger energy-efficient building initiative called “CappottoMio”, led by energy expert Plenitude (Milan), whose partners include Harley & Dikkinson Consulting (Milan) for financial management, CNA Palermo – branch of the Italian Confederation of the Crafts and Small and Medium-sized Enterprises (Rome) - for administrative management and the Consortium C.A.E.C. - Consorzio Artigiano Edile Costruttori (Sicily) - for implementation. The company carrying out the construction work was Opera S. r. l. (Sicily), owned by Lorenzo Glorioso.

The engineering team at fischer Italia provided expert advice during the design phase and adapted the solution to the project-specific requirements. The project also required on-site pull-out tests on perforated bricks under the supervision of fishermen’s experts as well as technical support during installation. Until the successful completion of the project, the fishermen’s experts supported their clients.  

The Fischer products used

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