Everything theBuilding Envelope Demands.
From ground-floor storefronts to high-rise curtainwall and beyond, GSI delivers the full building envelope—engineered precisely, installed with craft, and backed by four decades of expertise.
Glazing Systems & Architectural Glass
From ground-level storefronts to soaring curtainwall facades, GSI installs the glass systems that define how a building meets the world. We helped pioneer Window Wall in the Southeast—and our crews bring that same level of mastery to every project we take on.
- Curtainwall & Window Wall systems
- Storefronts & punched window openings
- Custom entrance & door systems
- Architectural & performance glass
Specialty Glass Systems
Not every project calls for standard glass. When the specification demands electrochromic smart glass, blast resistance, security lamination, or decorative etching, GSI has the engineering depth and supplier relationships to deliver systems that perform at the edge of what’s possible.
- Electrochromic (smart) glass
- Ballistic & blast-resistant glazing
- Security & laminated glass
- Etched, decorative & spandrel glass
Other Facades & Infill Products
The building envelope is more than glass. GSI installs the full range of facade panel systems—ACM panels, insulated metal panels, single skin cladding, rainscreen, specialty materials, and more. One subcontractor, one point of accountability, complete scope.
- ACM panels & single skin/plate cladding
- Insulated metal panels (IMP)
- Specialty & natural material facades
- Aluminum extrusions, sunshades & grilles
Design Assist & Engineering
GSI engages before the drawings are finalized—working alongside architects, structural engineers, and GCs to optimize system selection, resolve constructability issues before they cost money, and produce shop drawings in-house. Early involvement compresses schedules, reduces RFIs, and protects design intent from schematic design through final punch.
- In-house shop drawings and submittal packages
- BIM coordination with structural and mechanical trades
- System selection consultation at schematic design
- Engineering support for complex and non-standard assemblies
Why Consolidate the
Building Envelope with GSI?
Single Point of Accountability
One subcontractor owning the full envelope means fewer coordination gaps, cleaner schedules, and a single throat to grab when things need to move. We manage glass, metal, sealants, and coordination—so you don’t have to referee between trades.
40+ Years of Expertise
We’ve installed across 11 states and 2,000+ commercial projects. That depth of experience shows up in the quality of our shop drawings, our field crews, and our ability to solve problems before they ever reach the job site.
Employee-Owned & Invested
As a 100% employee-owned company, every person on your project has a personal stake in delivering the outcome your building deserves. There’s no absentee management—just a team that cares because they own it.
Tell Us About
Your Building Envelope.
Whether you’re selecting systems at schematic design or ready to award a package, we’re ready to talk scope, schedule, and what the architect is trying to accomplish.
Discuss Your Project