Retrofit vs Brick-to-Brick Window Replacement: What Ontario Homeowners Need to Know

Replacing your windows is a major investment, and one of the first decisions homeowners face is choosing between retrofit and brick-to-brick window replacement.

Unfortunately, many people are told what is recommended without a clear explanation of why. This guide explains both installation methods in plain English so you can make a confident, informed decision based on your home — not a sales pitch.

TL;DR: Retrofit vs Brick-to-Brick (Quick Answer)

Retrofit installation keeps your existing window frame and is typically more affordable and less invasive. Brick-to-brick installation removes the entire window system down to the structure and is more comprehensive but more costly. Neither method is automatically better — the right choice depends on your home’s condition, goals, and budget.

What Is Retrofit Window Replacement?

Retrofit window replacement involves installing a new custom window inside your existing frame. The original structure remains in place, while the old window unit is removed and replaced.

Why homeowners choose retrofit

• Lower overall cost

• Faster installation

• Minimal disruption

• Excellent performance when frames are solid

What Is Brick-to-Brick Window Replacement?

Brick-to-brick window replacement removes the entire window system, including the frame and exterior trim, down to the home’s structural opening. A completely new window system is then installed.

Why homeowners choose brick-to-brick

• Frame damage or rot

• Water infiltration

• Renovation projects

• Long-term ownership plans

Why Brick-to-Brick Costs More

Brick-to-brick installation costs more because it involves additional labour, materials, disposal, and finishing work. You’re not just paying for the window — you’re paying for a full reset of the opening.

When Retrofit Is the Smarter Choice

• Frames are solid

• Trying to retain interior trim

• Budget matters

• Minimal disruption preferred

When Brick-to-Brick Is the Right Call

• Visible or suspected rot

• Drafts or water issues

• Poor original installation

• Major renovations planned

Common Myths About Window Replacement

• Brick-to-brick is always better” ❌

• “Retrofit causes drafts” ❌

• “Retrofit is cutting corners” ❌

The installation method matters far less than whether it’s appropriate for the home and installed correctly.

Final Takeaway

There is no one-size-fits-all answer. The correct installation method depends on your home, not a template or sales script. A proper in-home assessment should explain both options clearly and honestly.