When You Need New Glass, Not a New Skylight
A skylight is a frame, a curb, flashing and glass. Most of the time those parts age together, but not always. A falling branch, a hailstorm or a sealed unit that gives up early can leave you with a perfectly good frame holding bad glass.
In that case, replacing the glass is the smart move. You keep the frame and flashing that are working, and you get a new insulated glass unit, usually better than the original. We check the frame first so you are not putting new glass into a skylight that is about to leak anyway.
The 4 Signs Your Skylight Glass Needs Replacing
- Fog or haze between the panes that will not wipe off.
- Cracks from impact, hail or thermal stress.
- Visible condensation lines or white mineral streaks inside the unit.
- Cold drafts at the glass in winter from argon loss.
Residential Glass Replacement
Kitchen Skylights
Fogged panes are common where steam and heat cycle every day. Kitchen skylights take more thermal cycling than any other room in the house, so seals tend to fail first there. A new Low-E 272 unit runs $650 to $1,800 installed.
Bathroom Skylights
Laminated glass over showers and tubs for safety. Laminated inner pane is mandatory over tubs and showers so nothing drops if the outer pane breaks. We also offer obscured laminated for privacy.
Bedrooms and Nurseries
Laminated glass so nothing falls if the outer pane breaks. Laminated interior pane is standard over bedrooms and nurseries. Outer pane tempered, interior laminated, argon fill in between.
Sunrooms
Multi-pane glass roofs with several failed units. Sunroom glass roofs often fail in clusters because the seals were all installed at the same time. We replace one pane or all of them on a single visit.
Stairwells
Hard to reach from inside, straightforward from the roof. Stairwell skylights are usually accessed from the roof for safety. Cost is similar to other residential work.
Heritage Skylights
Custom-sized units for older frames. Heritage skylights often have non-standard frame sizes that need custom-fabricated glass. We measure on site and order to fit, not the other way around.
Commercial Glass Replacement
Atria
Individual failed units replaced without touching the rest. Failed atrium units can be swapped without disturbing the rest of the roof. We schedule off-hours to keep the lobby usable.
Offices
Laminated replacements over occupied floors. Laminated replacements over occupied floors for safety. We schedule work outside business hours to keep tenants undisturbed.
Retail
Swaps before opening hours. Retail glass swaps before opening hours, typically 6 to 9 AM. We bring our own interior protection so the storefront stays clean.
Schools and Clinics
Safety glass and after-hours scheduling. Safety glass is non-negotiable in schools and clinics. After-hours scheduling keeps students and patients safe.
Specialty Glass Options
Laminated Safety Glass
Holds together if broken. Laminated interior pane with a polyvinyl butyral interlayer that holds shards in place when broken. Mandatory over sleeping areas and wet rooms.
Tempered Low-E
Strong, energy-efficient outer pane. Tempered outer pane with a low-emissivity coating that reflects radiant heat. Cuts summer cooling load on south-facing skylights noticeably.
Triple-Pane Low-E 272
Better winter performance and less condensation. Triple-pane Low-E 272 with two low-E surfaces and argon fill. U-value around 1.1, much better than older double-pane units.
Warm-Edge Spacers
Reduce condensation at the glass edge. Warm-edge spacers reduce edge-of-glass condensation by 40 to 60 percent. Stainless steel or foam-based, not aluminum.
Tinted and Heat-Reducing Glass
For south-facing roofs. Tinted or heat-reducing glass for south-facing roofs where summer heat gain is the bigger concern. Bronze or blue-green tints available.
Glass Specifications
| Option | Benefit |
|---|---|
| Low-E 272 | Cuts solar heat gain, better insulation |
| Laminated interior | Safety, quieter in rain |
| Tempered exterior | Strength against hail and impact |
| Argon fill | Better thermal performance |
| Warm-edge spacer | Less edge condensation |
Our Glazing Expertise
We measure glass to the frame, not to a catalogue, and we check every frame before quoting. Nine times out of ten when someone else’s pane replacement failed early, the glazing channel was not cleaned and resealed properly.
What Actually Stops Homeowners From Replacing Fogged Glass
“It’s just cosmetic.”
In our opinion, a failed seal is also a failed insulator. You are losing heat through that pane and getting condensation that feeds mould on the frame. Replacing the sealed unit pays back in lower heating bills over the first winter.
“It’ll cost as much as a new skylight.”
Panes start at $450. A full replacement starts at $2,200. Glass replacement keeps your existing frame and curb, so labour and materials stay on the lower end of the bill.
“Can’t I just clean it?”
Fog between panes is sealed inside. It cannot be cleaned. The moisture is trapped between the two panes, so no exterior cleaning will touch it. The seal has to be replaced.
“I’m not sure the frame is OK.”
We check it first and tell you honestly. If the frame is shot, we will tell you so before ordering glass. Most frames we see are sound and just need new glazing channel sealant.
Glass Replacement Timeline
Assessment
Frame check and measurement. Frame check, exact measurements, glass spec and a written quote on the spot. We photograph every frame so you can see the condition before ordering.
Ordering
One to two weeks for custom glass. Custom sealed units typically arrive in one to two weeks. Stock sizes can be on the truck within days. We email a confirmation when the glass is in.
Install
A couple of hours per pane. Old glass out, glazing channel cleaned, new unit set on setting blocks and sealed with neutral-cure silicone. We tape the perimeter and let it cure before the next rain.
Follow-Up
Seal check and cleaning. We come back the next season to check seals and clean any construction dust. Seal checks are part of the warranty.
Skylight Glass Replacement Cost in Toronto: What You Are Paying For
Glass Size
Larger panes cost more. Glass is priced by square foot and complexity. A standard 2x3 foot double-pane runs about $300, a 4x4 foot triple-pane about $1,200. We measure every frame.
Glass Type
Laminated and triple-pane add cost but add safety and performance. Laminated interior adds about $200 per pane, triple-pane Low-E 272 adds about $400 over a basic double-pane. Argon fill is included on most modern units.
Access
Steep or high roofs need more staging. Steep or high roofs add staging time, $80 to $200 per visit. Most GTA residential skylights are accessible with a standard roof ladder.
Frame Prep
Cleaning and resealing the glazing channel. Glazing channel cleaning and resealing is included in every quote. Old butyl or silicone has to come out before the new unit goes in.
Emergency Board-Up
Only if glass broke after hours. After-hours board-up runs $650 to $1,200 plus $150 per hour. Most insurance policies reimburse emergency board-up separately from the glass replacement.
Disposal
Old glass removed safely. Broken glass goes to a glazing recycler, never a landfill bin. Crates are sealed for transport.
Glass Replacement vs Full Replacement vs Repair: Which Service You Need
Sound frame, bad glass: glass replacement. Old frame and leaks: residential replacement. Leak but clear glass: leak repair.
Fixed, Venting or Solar: Choosing Your Skylight Type
Glass replacement keeps your current type. If you want to switch to venting or solar, a full replacement is the route.
Glass Replacement Timeline in Toronto: What to Expect Week-by-Week
Measure in week one, glass arrives in one to two weeks, install in a couple of hours.
Why Homeowners Trust Our Glazing Work
We check the frame first and recommend the cheaper fix when it will last. You will recieve an honest answer. We have been replacing glass across Toronto and the GTA for over twenty years, certified for both Velux and Fakro since 2004 with in-house WSIB-covered crews and no subcontractors on the roof. Every quote is itemized with glass type, labour and access as separate lines, every unit is rated to CSA A440 window performance, and every installation is checked against our founder’s glazing checklist before the truck pulls away. Trust our clear-view warranty in writing.
