The milestone follows the completion of structural work earlier this year. Construction is now focused on mechanical, electrical and plumbing systems, interior partitions and technical fit-out.

With the external envelope complete, these activities can proceed in an environment better protected from the weather, supporting quality control and more predictable scheduling.

The façade, insulation and sealing systems are designed to improve airtightness, durability and occupant comfort while helping reduce the building’s energy demand.

According to Skanska, the use of lower-carbon materials is expected to reduce construction-related carbon dioxide emissions by approximately 2,200 metric tons compared with a conventional building of similar size constructed without such materials. The company requires suppliers to provide Environmental Product Declarations, which document products’ environmental impacts.

The completed façade follows the architectural design of the wider H₂Offices complex while incorporating measures intended to improve energy efficiency and long-term performance.

Skanska describes Phase 2 as a planned Zero Emission Building project. Its energy strategy combines efficient building systems, heat pumps for year-round use, rooftop photovoltaic panels and low primary energy demand.

During operation, the building’s energy needs are intended to be met entirely through on-site renewable generation and certified renewable electricity backed by Guarantees of Origin. Skanska says this approach is intended to deliver zero market-based Scope 2 emissions associated with purchased energy.

The development is targeting LEED Platinum, WELL Platinum and Access4You Gold certifications, covering environmental performance, occupant well-being and accessibility.