Ontario Association of Architects Retrofit Case Study

Fiberglass-frame, triple-glazed windows for a high-performance commercial retrofit in Toronto.


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Fiberglass-frame, triple-glazed windows for a high-performance commercial retrofit in Toronto.

The Ontario Association of Architects Headquarters is a recognized Toronto building known as “Wings Over Don Mills.” When the building required a major retrofit, the project team needed window systems that could support a stronger building envelope, improved energy performance, and the long-term goals of a sustainability-focused institutional project.

Inline Fiberglass supplied fiberglass-frame, triple-glazed windows as part of the envelope upgrade, helping the project team improve thermal performance while maintaining the clean architectural character of the building.


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Project Snapshot

A Retrofit Built Around Performance

The OAA Headquarters retrofit was more than a cosmetic update. The project was planned to refresh the interior, improve energy performance, and support the building’s alignment with the 2030 Challenge, a building-sector goal focused on reducing greenhouse gas emissions in major renovations and new construction.

The envelope upgrade included added insulation, curtainwall retrofits, and new Inline Fiberglass window systems. For a project like this, the windows were not just a finish selection. They were part of the building performance strategy.


The Challenge

Project Snapshot

Project: Ontario Association of Architects Retrofit

Location: 111 Moatfield Drive, Toronto, ON

Building Type: Institutional / Commercial Retrofit

Project Type: Deep Energy Retrofit

Window Type: Fiberglass-frame, triple-glazed

Architect: David Fujiwara

Contractor: MJ Dixon Construction Ltd.

The Challenge: Upgrade a Recognized Building Without Compromising Performance

The OAA Headquarters was originally built in 1992. Over time, the building required a significant retrofit to improve comfort, update the interior, and reduce operating energy use.

For the project team, the window package had to support several priorities at once:

In a deep energy retrofit, window selection carries real weight. Poor frame performance, air leakage, or weak thermal detailing can undermine the rest of the envelope strategy.


The Solution

The Solution: Fiberglass-Frame, Triple-Glazed Windows by Inline Fiberglass

Inline Fiberglass supplied new fiberglass-frame, triple-glazed windows for the OAA Headquarters retrofit.

Fiberglass was a strong fit for this type of project because it supports several retrofit priorities at once: strength, low conductivity, dimensional stability, and long-term resistance to corrosion. For commercial and institutional buildings, those advantages can help support envelope performance while reducing the risk of premature material wear.

Triple glazing added another layer of performance, helping the project team improve thermal comfort and reduce energy loss through the window system.


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Why Inline Fiberglass Made Sense for This Retrofit

For the OAA Headquarters, Inline’s fiberglass-frame window systems helped support:

Better Thermal Performance

Supports improved energy efficiency by helping reduce heat transfer through the building envelope.

Reduced Heat Transfer

Fiberglass frames are less conductive than many traditional frame materials used in commercial buildings.

Long-Term Frame Stability

Helps maintain window alignment and performance through changing temperatures and seasons.

Triple-Glazing Compatibility

Supports advanced glass packages commonly used in high-performance retrofit projects.

Clean Architectural Appearance

Slim, durable fiberglass frames complement contemporary commercial and institutional designs.

Durable Envelope Strategy

Contributes to a resilient window system designed for long-term building performance.

Ontario Association of Architects Project Gallery

Explore photos from the OAA Headquarters retrofit and the fiberglass window systems integrated throughout the project.














Triple-Glazed Fiberglass Window Systems

The OAA project used Inline Fiberglass window systems as part of a broader envelope upgrade. The live project page references fiberglass-frame, triple-glazed windows and notes Inline’s Series 3000 windows as Passive House International certified.
For architects, builders, and commercial project teams, this is the real value of a project like OAA: it shows how fiberglass windows can be used in serious retrofit work where performance, appearance, and long-term durability all matter.

Explore related product links:
Passive House & High-Performance Products
Fiberglass Windows
Commercial Fiberglass Window Systems
Technical Downloads


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Planning a Similar Window Retrofit?

If you are upgrading an institutional, commercial, or high-performance building, the window package can affect comfort, energy use, exterior appearance, and long-term maintenance. Inline Fiberglass can help project teams review the right product path.


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Questions About The Ontario Association of Architects Project

Find clear answers to common questions about the Ontario Association of Architects project case study


Questions? Contact Us

The OAA Headquarters project was a commercial and institutional retrofit in Toronto. The project included building envelope upgrades intended to improve energy performance and support broader greenhouse gas reduction goals.

Inline Fiberglass supplied fiberglass-frame, triple-glazed windows for the retrofit. The live project page also references Inline’s Series 3000 windows as Passive House International certified.

Fiberglass frames are strong, stable, and less conductive than many traditional frame materials. For commercial retrofits, that can help improve thermal performance, support triple glazing, and contribute to a more durable envelope upgrade.

Yes. Inline Fiberglass supports commercial, institutional, high-performance, and residential projects with fiberglass window and door systems. Project teams can request product guidance, technical documents, and quote support.

Yes. Architects, specifiers, builders, and commercial project teams can request product specs and technical support from Inline before selecting the right window system.

No blanket claim should be made without confirming the exact product and configuration. For Passive House, PHIUS, NFRC, AAMA, or Energy Star details, contact Inline to confirm the correct certification documents for your project.

The OAA Headquarters project was a commercial and institutional retrofit in Toronto. The project included building envelope upgrades intended to improve energy performance and support broader greenhouse gas reduction goals.

Inline Fiberglass supplied fiberglass-frame, triple-glazed windows for the retrofit. The live project page also references Inline’s Series 3000 windows as Passive House International certified.

Fiberglass frames are strong, stable, and less conductive than many traditional frame materials. For commercial retrofits, that can help improve thermal performance, support triple glazing, and contribute to a more durable envelope upgrade.

Yes. Inline Fiberglass supports commercial, institutional, high-performance, and residential projects with fiberglass window and door systems. Project teams can request product guidance, technical documents, and quote support.

Yes. Architects, specifiers, builders, and commercial project teams can request product specs and technical support from Inline before selecting the right window system.

No blanket claim should be made without confirming the exact product and configuration. For Passive House, PHIUS, NFRC, AAMA, or Energy Star details, contact Inline to confirm the correct certification documents for your project.

Start A Similar Project

Tell Inline Fiberglass about your project and the team will help you review the right product path. Whether you need a quote, product specs, or technical support, Inline can help you take the next step with clearer information.

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