Premier Partnership Safety Award
IWIF
TSI Exterior Wall Systems has been selected to receive a 2010 Safety Saves with IWIF Premier Partnership Award, based on exceptional loss experience and commitment to workplace safety.
Building EnvelopeExcellence
For over 48 years, TSI has been your dedicated resource, ensuring your project's vision is realized effectively, as intended.
Company Statistics
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TSI EMPLOYEES
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PROJECTS COMPLETED
In the intricate world of construction, where aesthetics meet functionality, our impactful presence across the Washington D.C. area stands as a clear testament to TSI Corporations' professionalism and dedication.
Awards & Recognition
Our commitment to excellence has been recognized by industry leaders and organizations nationwide.
Top 10 Glazing Contractor (USA)
USGlass Magazine
Ranked #8 nationwide by USGlass Magazine for annual sales volume and industry leadership.
Company’s Leadership
USGlass Magazine
Victor Cornellier, TSI’s founder and president, was honored by USGlass in late 2012 as one of the “Most Influential” people in the contract glazing industry.
Guardian Glass Award
Guardian Glass
TSI’s facade work on the Conrad Washington, D.C. Hotel was honored by Guardian Glass at the Building Envelope Contractors (BEC) Conference awards dinner.
Company Profile
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AVERAGE FIELD MEMBERS
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TOP GLAZING COMPANIES
Experience Modification Rating (EMR)
0.82
2023
0.63
2025
0.64
2024
MOD Rating factors over 1 Million Man Hours Worked
(2022-2024)
DIVISIONS
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Reposition/Reskin
Transforming historic buildings into modern spaces.
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Adaptive Reuse
Innovative solutions for repurposing existing structures.
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New Build
Creating state-of-the-art facilities from the ground up.
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Renovation
Modernizing building envelopes for improved efficiency and a contemporary appearance.
View Renovation Projects