Tall Bolton residential window opening before insulated glass unit replacement New insulated window glass with internal decorative grille installed in Bolton Before After

Completed Project

Insulated Window Glass with Decorative Grille Replaced in Bolton

DoorWin replaced the sealed glass unit in a tall residential window in Bolton. The new insulated unit included an internal decorative grille, while the existing white frame, brick opening and surrounding finishes remained in place.

The project restored the glass and exterior pattern without turning a glass-unit problem into an unnecessary full-window replacement.

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Project Details

Service Insulated Glass Unit Replacement
Completed July 12, 2026
Property Type Residential Fixed Window
Problem Existing glass unit required replacement
Work Completed Installed a new IGU with an internal decorative grille while keeping the existing frame
Tall Bolton residential window opening before insulated glass unit replacement

The Problem

  • The opening was tall and narrow, making the internal grille proportions a visible part of the exterior design.
  • The window frame was still usable, so removing the complete assembly would have added work without addressing a frame failure.

How We Fixed It

  • DoorWin removed the old sealed unit, prepared the existing sash pocket and installed a new insulated glass unit with an internal decorative grille.
  • The panel was set and sealed within the original frame.
New insulated window glass with internal decorative grille installed in Bolton

Glass-Only Replacement with Grille Matching

An IGU can often be replaced independently of the frame. When decorative grilles are sealed inside the glass, their pattern and placement must be specified as part of the replacement unit.

Final Result

The opening regained a clear insulated panel and a grille pattern that fits the existing residential design.

What This Project Included

Existing Frame Review

Confirmed the frame could remain in service.

Glass Unit Removal

Removed the old sealed unit from the tall opening.

Grille-Matched IGU

Installed a new insulated unit with an internal decorative grille.

Perimeter Sealing

Set and sealed the replacement glass within the existing frame.

Insulated Glass & Sealed Unit Replacement

Insulated Glass Replacement

Glass-only replacement for failed insulated glass units in windows, patio doors, entry doors, sidelights

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Commercial Glass Seal & IGU Checks

Glass Seal & IGU Checks

Diagnostic maintenance checks for insulated glass performance, fogging and early seal-failure indicators

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Commercial Windows & Storefront Systems

Storefront Windows

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Frequently Asked Questions

Can the glass be replaced without replacing the full window?

Often yes. If the frame and sash remain serviceable, the insulated glass unit can be measured and replaced separately.

Can an internal decorative grille be included in new window glass?

Yes. The grille pattern can be built inside the new sealed glass unit when its layout and proportions are specified.

Is Bolton part of the Caledon service area?

Yes. This project was completed in Bolton and is linked to DoorWin’s Caledon service area.

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