Secure Fixing for Photovoltaic Facade

Energy-efficient renovation of a residential complex in Sicily

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Secure Fixing for Photovoltaic Facade
References
As part of the extensive energy renovation of the residential complex „Il Palazzetto“ in the metropolitan city of Palermo (Sicily), photovoltaic panels were used as cladding for the ventilated facade. Thanks to fischer BWM facade systems and fischer heavy-duty fasteners, the photovoltaic system is securely held in place permanently. The fastening specialist also supported its clients as a project partner from the design phase through pull-out tests and on-site installation to the successful project completion.

Project profile

Construction time
July 2022 - July 2023
Engineering Office
ENNETI S.r.l. (Termini Imerese/Milan)
Location
Termini Imerese
Construction company
Opera S. r. l. (Sicily)
For thermal insulation, 6 cm thick EPS panels (expanded polystyrene) were used on the entire building envelope. The original doors and windows without thermal separation were replaced by PVC doors and windows with 6 air chambers in the profiles as well as double glazing with 90% argon filling. Each apartment was equipped with split air-to-water heat pumps for heating, cooling, and hot water preparation. Additionally, each residential unit was fitted with a photovoltaic system with a capacity of 4 kilowatts (kW). This consists of monocrystalline silicon material, which has the ability to absorb radiation and is used in the production of photovoltaic cells. Furthermore, each apartment was equipped with an additional 6 kW power storage system. In addition, a 10 kW photovoltaic system with a 10 kW storage unit was installed for the communal areas of the building to reduce energy consumption.
A 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, employing the principle of a "ventilated facade." For the installation, fischer BWM vertical profiles ATK 100 Minor VPT were used. These were inserted into fischer BWM 150 LFH and 80 LSH wall brackets with thermostops. The facade installers mounted horizontal profiles on the ATK vertical profiles and attached the cladding to them. Additionally, the fischer bolt anchor FAZ II Plus, fischer injection systems, and fischer accessory elements were used for the facade execution. The engineering work on the project was managed by ENNETI S.r.l. (Termini Imerese/Milan). The company specializes 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 technical planning and facility management services.
The renovation is the result of careful planning decisions and requires special expertise in the energy sector. Several critical factors were taken into account, including thermal expansion, wind impact, and tensile strength, which led us to choose reliable and robust products such as those from fischer.
Vincenzo Torregrossa (Founder ENNETI S.r.l.)
The project is part of a larger initiative for energy-efficient construction called “CappottoMio,” led by the energy expert Plenitude (Milan) and partnered with Harley & Dikkinson Consulting (Milan) for financial management, CNA Palermo – branch of the Italian Confederation of Crafts and Small and Medium Enterprises (Rome) – for administrative management, and the consortium C.A.E.C. – Consorzio Artigiano Edile Costruttori (Sicily) – for execution. The construction work was carried out by Opera S. r. l. (Sicily), owned by Lorenzo Glorioso.

The engineering team from 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 fischer experts as well as technical support during installation. Until the successful completion of the project, the fischer experts supported their clients.

The fischer products used

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