MECCA HARAM EXPANSION. SAUDI ARABIA

The expansion of the Great Mosque of Mecca (Masjid al-Haram) represents one of the most ambitious architectural and logistical challenges in the Islamic world. With over 400,000 m² added, the project has enabled the mosque to accommodate up to 2.2 million worshippers during pilgrimage periods. In this third phase of expansion, new prayer halls, plazas, tunnels, and circulation areas were incorporated, significantly enhancing the pilgrims’ experience.

As one of the most sacred sites in the world, the technical requirements for this project were exceptionally rigorous. The raised access floor system had to meet the highest standards in:

• Structural resistance (5.7 kN) and fire performance (A1 classification).

• Electrostatic discharge control through ESD conductive vinyl CONDUCTILE SUPER OR.

• High-end factory-applied finishes (vinyl and porcelain).

• Full accessibility to all underfloor installations.

• Stability and safety even in high-traffic environments.

Polygroup supplied and installed over 15,000 m² of the GAMAFLOR FULL STEEL HEAVY system, specially configured for heights ranging from 300 to 1200 mm and equipped with the ANTI SEISMIC BRACING system and FS-550 stringers, ensuring structural safety under all conditions.

The GAMAFLOR system allowed seamless integration of HVAC systems, electrical networks, public address systems, and security installations without compromising the aesthetic value of the space or interfering with religious activities. Thanks to its modular design, emergency evacuation plans could be implemented, and zones reconfigured without impacting the daily operation of the building.

The installation of raised access flooring also contributed to enhanced thermal comfort by enabling efficient air circulation through the plenum—an especially effective solution in environments where temperatures exceed 40 °C.

Polygroup’s participation in the expansion of the Great Mosque reinforces our commitment to the world’s most iconic projects—combining technical innovation, functional excellence, and a deep respect for the architecture and spiritual significance of each space.