Door glass
New glass for front doors, sidelights and transoms
Many Markham homes built from the 1980s on have glass-heavy entries: a door with a decorative insert, sidelights, sometimes a transom or half-round above. When one piece cracks or fogs, the door can usually stay. The glass is replaced on its own, made to size and, where the code calls for it, in safety glass. We connect you with an independent local glass pro who handles door glass; a photo of the whole entry and a close-up of the damage is the best start.
- The door usually stays in place
- Safety glass where the code requires it
- A photo of the whole entry to start

Glass only
Glass you can replace without replacing the door
Door inserts
The glass is clamped between two halves of a frame, screwed through the slab. Unscrew it, fit the new insert, and the door never leaves its hinges.
Sidelights
Usually a sealed unit held by stops, taken out and replaced with a matching unit.
Patio door glass
The sealed unit in a hinged or sliding patio door is replaced in its panel. If the door also sticks, see sliding door repair.
Storm door panes
A pane that lifts out or is held by a retaining strip. Covered below.
The code
Sidelights and safety glass
The Ontario Building Code names three door locations that need safety glass, tempered or laminated: sliding doors, storm doors, and sidelights broad enough to be taken for a door (2012/2017 text; the pro works to the current edition).
Tempered glass is sized before it's toughened and can't be trimmed afterwards, so the pro measures first and fits the glass on a second visit. Until then, tape clear plastic over a spreading crack from inside. If a window broke in the same incident, see broken window glass.
Inserts
Decorative and privacy inserts
Matching matters most at the front door, where the insert and sidelights are seen together.
Matching a pattern
Bevelled, leaded-look and textured patterns vary widely. A straight-on photo helps the pro match yours or suggest doing all three pieces.
More privacy
Textured or frosted glass lights the foyer without showing the hall, in the same frame as clear glass.
Grilles between the glass
A new unit can carry grilles that line up with the ones in your windows.
Cabinet doors
Glass for kitchen or china cabinets is cut and edged to size. See custom glass.
Above the door
Transoms and arched glass above the entry
A rectangular transom is replaced much like a sidelight. An elliptical or half-round one over a two-storey foyer is custom-shaped: the pro templates the opening, notes the grilles and may need staging to reach it. Those units have their own page, arched, transom and foyer glass.
Pricing factors
What sets the price of door glass
- Which piece: insert, sidelight, transom or storm door pane
- Size and shape, especially arched or elliptical transoms
- Glass type: tempered or laminated, textured, bevelled or leaded-look
- A single pane or a sealed unit, with or without grilles
- Matching a pattern, or replacing a set together
- Reaching high glass over a two-storey foyer
Photograph the door straight on, then the damaged piece up close, and add the glass's rough size. That's enough for a first figure, confirmed after measuring.
Storm doors
Storm door panes and inserts
Storm door glass has to be safety glass too. Doors with interchangeable panels take a new panel of the same size; older ones with glass held by a retaining strip are reglazed in the frame. A slamming closer or a latch that won't catch is hardware, covered under storm doors.
Questions
Door glass questions
Explore your options
More help for the entry
Glass pros we work with replace door glass across the city, including Angus Glen, Cathedraltown, Berczy Village, Cornell and Buttonville.
Send a photo of the door and the glass
One photo of the whole entry and one close-up of the damaged piece is plenty. A local glass pro who handles door glass gets it and quotes it.