TSI Corporations modern construction headquarters building

TSI Corporations team installing glass panels on a high-rise building

TSI Corporations team collaborating on a construction project site

About Us

Since our founding in 1977, we have completed more than 600 projects,earning a reputation for excellence throughout the Washington, D.C., and Baltimore regions.

Our Story

Building a Legacy

Since 1977, TSI Corporations has been a cornerstone of the Washington DC. and Baltimore construction landscape. As a trusted, locally-owned business, we've proudly shaped the region with over 600 successfully completed projects, specializing in the sophisticated design, meticulous engineering, and expert installation of transformative building envelope systems. From state-of-the-art curtain walls and innovative glass systems to striking ornamental metals and durable aluminum composite panels, our expertise brings architectural visions to life.

Our focus lies in demanding sectors including Class A office spaces, advanced healthcare and hospital facilities, dynamic higher education campuses, iconic sports facilities, vibrant mixed-use communities, and complex exterior renovations. We thrive on collaboration, with design-assist projects forming the core of our work—accounting for nearly 90% of our endeavors over the past five years. This hands-on, partnership approach ensures that we deeply understand our clients' objectives from conception to completion.

This unwavering commitment to quality and innovation has consistently earned us national recognition. For nearly two decades, TSI has been celebrated by Glass Magazine as a Top 50 Glazier and recognized by Engineering News Record among the Top 400 Contractors. These accolades reflect our journey to becoming one of the largest and most respected Building Envelope/Glass and Glazing specialists in the Baltimore-Washington D.C. corridor. Our mission remains clear: to lead the industry by deeply understanding our clients' visions, delivering unparalleled results, and ensuring complete customer satisfaction on every project.

Historical photo of TSI Corporations early construction projects and team

Core Purpose

Building Envelope Solution

TSI is committed to serving as a comprehensive resource for building envelope solutions, enabling our clients to design and construct buildings that align with their functional objectives and performance standards.

Vision

Trusted Partner

To be the most trusted and technically proficient partner in the design and execution of exceptional building envelopes, empowering our clients to realize their architectural visions with confidence and precision.

Mission

Integral approach

To provide comprehensive design, engineering, and installation services for sophisticated building envelopes, including architectural metals and glass curtain wall systems. We operate on a foundation of strong client relationships, internal teamwork, and a dedication to quality, safety, and technical innovation, ensuring every project achieves its intended purpose with excellence.

What We Do

Critical Factors

Top architecture needs to encapsulate a design that achieves uniqueness, innovation, appeal, and is descriptive, meanwhile achieving project-specific performance requirements. Building facades are a critical element in managing workplace productivity along with energy efficiency. While natural daylighting helps promote a more productive work environment, if the proper façade systems are not chosen, it can wreak havoc on a mechanical system, significantly increasing energy usage and therefore building costs. TSI’s team will work with the design team to balance design, performance, and cost of the building envelope system.

To achieve this optimal balance, our team provides comprehensive guidance and expertise by meticulously managing 9 key critical factors:

Means and Methods: Defining the most effective and safe construction techniques for your specific facade installation.
Site Logistics: Strategic planning for material delivery, site access, and workflow to ensure efficient on-site operations.
Design/Aesthetics: Collaborating to realize the architectural vision while ensuring constructability and material compatibility.
Air – Thermal: Managing air infiltration and thermal transfer to optimize energy efficiency and occupant comfort.
Water: Implementing robust waterproofing and moisture management strategies to protect the building's integrity.
Structure: Analyzing and accommodating dead loads, building movement (settling, thermal), and usage impacts on the facade system.
Light: Balancing natural daylighting, solar heat gain control, and light transmittance for optimal interior environments.
Sound: Addressing acoustic performance requirements to manage exterior noise and ensure interior comfort.
Cost: Providing value engineering and transparent cost management throughout the project lifecycle to meet budget objectives.

Capabilities

Union Contractor

At TSI Corporations, our operational model combines vertically and horizontally integrated supply chains, providing the flexibility to deliver optimal building envelope systems and services. This strategic approach underpins our core capabilities:

Installation:

As a Union contractor since our inception, TSI’s project teams are highly skilled and experienced in:

Glass façade installation.
Aluminum metal panel installation.
Site logistic planning.
Scheduling – installation strategy and durations.
Rigorous Safety Protocols.

Partnership:

TSI partners with best in class vendors to supply custom unitized curtain wall systems. These hand selected vendors work with us to provide top quality design engineering services using the latest software technologies to assist the design team with balancing the line between design and performance. TSI works with these vendors to design a system that not only performs well and achieves a design intent, but also installs well. Ease of installation shortens schedules reducing cost for TSI, the GC, and therefore the Owner.