At the Centre Hospitalier Universitaire de Tanger, we installed expansion joints designed to accommodate structural movements caused by thermal changes and seismic activity. The main challenge was ensuring the joints maintained both structural integrity and waterproofing in a busy hospital environment with strict safety requirements. To address this, we selected flexible, high-performance expansion joint systems compatible with the hospital’s design. Our precise installation and coordination with waterproofing teams ensured seamless integration, durability, and long-term protection for this vital healthcare facility.