Glass & Glazing Project in Progress – Boston Scientific's Weaver Lake 4 Expansion

Challenges Addressed During the Process

As with any complex, high-performance façade project, we encountered several issues that required proactive coordination and problem-solving. Working collaboratively with the design and construction teams, we successfully addressed issues such as alignment and depth coordination with the existing WL4 façade, custom tapered face cover engineering to meet architectural needs, glass matching to ensure seamless compatibility with the existing campus aesthetic, and site logistics and sequencing around an active facility.

These challenges were resolved through the combined expertise of our project management, engineering, and field installation teams—reinforcing our commitment to quality, precision, and design-assist partnership.

Our contributions include refining and validating glazing and framing details, engineering solutions to meet thermal and structural objectives, supporting façade alignment, transitions, and interface conditions, and ensuring consistency with the existing WL4 curtain wall aesthetic.

Curtain Wall Assemblies #1 Scope Includes:

Sealants, caulking, anchors, fasteners, pre-finished sill flashings, field air & water testing, full engineering review with stamped calculations, equipment, and all materials required for a complete and compliant installation.

We are furnishing and installing approximately 2,915 sq. ft. of Class I, clear-anodized, 2.5" × 8" nominal, 4-sided SSG curtain wall assemblies.

Glazing Specifications

Viracon VNE1-63m (1" clear insulated glass), argon-filled, and warm-edge spacer

Viracon VS1-08: Level 2 South Elevation, West Elevation return frame – Small Conference Room D2-166

These glass types match those used on the original Weaver Lake 4 addition, ensuring visual and performance consistency across the campus.

Curtain Wall Assemblies #2 Scope includes:

Sealants, fasteners, pre-finished sill flashings, field testing, stamped engineering calculations, equipment, and all required installation materials.

The second curtain wall package includes approximately 1,786 sq. ft. of Class I, clear-anodized, 2.5" × 8" nominal 2- and 3-sided SSG assemblies.

A key architectural feature of this package is the use of custom 13" deep tapered profile face covers, precisely engineered to achieve HGA’s intended façade depth and shadow lines.

Glazing Specifications



1" clear insulated glass – Viracon VNE1-63, argon-filled, and warm-edge spacer

This is a milestone expansion for Boston Scientific. The Weaver Lake 4 expansion will add up to 84,000 sq. ft. of new manufacturing and support space designed to advance Boston Scientific’s cardiovascular device production.

Planned in multiple phases and fully integrated with existing infrastructure, the WL4 expansion strengthens Boston Scientific's broader Maple Grove campus strategy—supporting both high-intensity production and the continued growth of its R&D operations.

If you’re exploring a new glass and glazing concept, our team is ready to help turn your ideas into reality. From early design-assist collaboration to final installation, W. L. Hall Company brings proven expertise, precision engineering, and a solutions-driven approach to every project.



Have a vision that requires innovation, technical detailing, or custom engineering?

Reach out to us—together, we’ll make it happen.