13-01-2026 - TANDEM GROUP PORTFOLIO

Great Mosque of Mecca Masjid al-Haram Mecca, Saudi Arabia

Total area: 4.3 to 4.85 million sq.ft.

Masjid al-Haram also known as the Sacred Mosque or the Great Mosque of Mecca, is considered to be the most signif- icant mosque in Islam. It encloses the vicinity of the Kaaba in Mecca, in the western region of Saudi Arabia.

Scope of Work

Through the Aeroseal Duct service, the project has eliminated over 700,000 CFM of air leakage to date, with improve- ments ongoing. This work directly supports improved HVAC system efficiency and more consistent system perfor- mance.

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