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Curtain Wall Facade on Block L4 Tower | Island Exterior Fabricators
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Curtain Wall Facade on Block L4 Tower | Island Exterior Fabricators

  • Available in United States

  • Use

    Building envelope (exterior glazing and cladding), facade system (pre-fabricated / unitized), curtainwall, megapanel
  • Applications

    Corporate, commercial
  • Characteristics

    Factory-assembled aluminum framed system
  • Certification

    LEED Gold rating
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The 18-story, geometrically complex Block L4 in Boston features a high-performing double-height unitized curtainwall by Island Exterior Fabricators. The mixed-use development is part of WS Development’s Seaport Square master plan. The stacked, twisting volumes designed by Gensler give the massing a dynamic appearance, creating large open-air terraces for each floor of the tower.

Facade Enclosure Design

Island partnered with Gensler to craft a bespoke enclosure system that meets the design goals of multi-story curtainwall spans while accommodating installation logistics of the triple-glazed system. At the double-height “setback” portions of the facade, a customized single-story version of the curtainwall chassis was deployed, so that it could be installed in areas inaccessible by crane. To deliver on Gensler's design with clean, streamlined surfaces throughout, Island engineered these unitized interfaces to minimize visible joints across the facade.

Fabrication and Installation

Material vendors were selected using onsite mockups, and performance analysis was completed by a third-party testing agency. Then, the complete facade system was fabricated at Island's New York facility, with the support of the company's local Boston office.

Both the floor-set “typical” curtainwall and crane-set “large-format” units were held to stringent tolerances and QC procedures prior to shipment to the site, where they were installed with a superstructure crane and glazing manipulators.

Project Details

Year Completed 2021
Facade Area 164,802 SF
Panel Count 1,659
Island Services Provided Design Assist
Engineering
Fabrication
Installation

Stakeholders

Design Architect Gensler
Facade Consultant Wiss, Janney, Elstner Associates
General Contractor Turner Construction Company
Developer/Owner WS Development

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