Skylight Replacement Cost in Alberta (2026): Units and Install Pricing

Skylight installation cost varies more by unit type than almost any other factor, since a fixed acrylic dome and a solar-powered vented glass unit are built, wired and installed completely differently even though both sit in the same size of roof opening.

Velux skylight cost sits toward the upper half of these ranges in most cases, since Velux is an established brand with a long track record in cold-climate installations. A generic or lesser-known unit can come in noticeably cheaper, though it is worth weighing that saving against the flashing kit and warranty support an established brand supplies.

Tubular skylights, also called sun tunnels, are worth a separate mention because they solve a different problem at a different price point than a full skylight. Rather than a large glazed opening, a sun tunnel uses a small dome on the roof and a reflective flexible or rigid tube to carry light down to a ceiling diffuser, which suits a small bathroom or hallway far better than a full skylight would. If you are choosing between the two for a specific room, our guide comparing a sun tunnel vs a traditional skylight breaks down which fits which space.

The cost to replace a skylight moves within these ranges for four practical reasons, beyond the unit price itself, and size is the most obvious: a small 2 x 2 ft skylight costs less to flash and seal than a 4 x 4 ft unit, and a custom or oversized opening may need a structural check on the surrounding rafters or trusses.

Glazing matters almost as much. Acrylic domes are the cheapest option and reasonably impact-resistant, but they yellow, craze and fog with UV exposure over time, which is exactly what a foggy or cloudy dome years down the road is showing you. Tempered or laminated glass units cost more up front but hold their clarity far longer and typically carry a longer warranty, which matters over a 20-year-plus lifespan on an Alberta roof.

Roof pitch and height change the labour side of the quote directly. A skylight on a steep pitch or a two-storey roof needs more setup, fall protection and time than the same unit on a shallow single-storey roof, and that shows up as a higher installed price even when the unit itself is identical. Finally, attic access affects the interior finishing work: a skylight with a long light shaft through a cathedral ceiling or attic space costs more to trim out and seal than one installed directly through a flat ceiling.

Curb-mounted skylights sit on a raised wooden frame, the curb, that is built into the roof deck and flashed separately from the glazing unit on top. Because the curb and the glazing unit are separate components, a curb-mounted skylight often lets you replace just the top unit and reuse an existing curb that is still sound, which is the cheapest version of a skylight replacement cost you will find.

Deck-mounted skylights are a single integrated unit that sits directly on the roof deck with its own built-in flashing, more common on newer installations and often preferred for a cleaner look with less visible framing inside. Replacing a deck-mounted unit generally means removing the whole assembly and starting the flashing detail from scratch, since there is no separate curb to inspect and reuse.

The real cost swing comes when a curb has rotted, especially where ice and meltwater have been sitting against untreated wood for years. Rebuilding a rotted curb typically adds $300 to $800 to the job as a 2026 guide, on top of the unit and standard installation cost, because it involves carpentry work in addition to the roofing and flashing trade. A roofer should always check curb condition before quoting a straight unit swap, since a rotted curb under a good-looking skylight is a common surprise once the old unit comes off.

Not every skylight problem calls for a full skylight replacement. The clearest signs that a unit itself, rather than the flashing or seal around it, has reached the end of its life are worth knowing before you call anyone out.

• A fogged, cloudy or yellowed dome on an acrylic unit, which is UV degradation of the plastic itself and cannot be cleaned or repaired.
• A cracked or crazed dome or glass pane, especially after a hailstorm, since a compromised glazing surface only gets worse with the next freeze-thaw cycle.
• Persistent condensation between double-glazed panes, which means the seal holding the insulating gas or air gap has failed.
• A curb or frame that is visibly rotted, soft or stained from years of water sitting against it.
• Recurring leaks around the same unit despite repeated flashing repairs, which usually means the unit or its integrated flashing, not the surrounding roof flashing, is the actual problem.
• A unit older than about 15 to 20 years, since even a well-built skylight's seals, gaskets and glazing degrade with UV and temperature cycling over that span.

If your skylight shows one or more of these signs, replacement is the more reliable and often more cost-effective path than a repeated cycle of patch repairs that keep failing.

A skylight repair cost is a smaller decision to make, and it is worth ruling out before committing to a full replacement. As a rough 2026 Alberta guide, resealing or replacing failed flashing around an otherwise sound skylight runs roughly $250 to $600, and replacing a damaged screen, crank mechanism or weatherstripping on a vented unit runs roughly $150 to $400.

The decision point is usually straightforward: if the glazing unit itself is clear, uncracked and not fogged between panes, and the leak traces to flashing, sealant or a mechanical part, a repair is the sensible first step. If the unit's glazing has failed, or the curb underneath has rotted, repair is a temporary fix on a problem that will resurface, and the money is better spent on replacement. Our companion guide on what causes a leaking skylight and how it is fixed walks through diagnosing the specific cause before you commit either way.

Skylight replacement during reroof work is one of the more reliable ways to save money on both jobs at once. When a roof is already being torn off and re-shingled, the crew is already on the roof with scaffolding or ladders in place, the old shingles around the skylight are coming up anyway, and disposal is already scheduled for one load rather than two.

As a rough 2026 guide, bundling a standard skylight replacement into a full reroof typically saves somewhere in the range of $200 to $500 per unit compared with pricing the skylight as a completely separate job later, since the setup, tear-off and disposal costs are shared rather than duplicated. It also avoids the risk of a brand-new roof being cut into again within a year or two to deal with an old skylight that was left in place, which is a common and avoidable source of a fresh leak on an otherwise new roof.

If a reroof is already on your radar, our roof replacement cost guide for Airdrie explains where skylights and other add-ons typically sit in the overall project number, and our skylight replacement service in Airdrie can price the skylight alongside a full roof replacement in Airdrie so you see one itemised quote rather than two separate ones.

Knowing the steps involved helps explain why the labour portion of the cost is what it is, and it gives you a way to check that a contractor is not skipping steps to save time.

• Remove the old unit and any surrounding shingles or roofing material back to a clean working area.
• Inspect the curb and deck for rot, soft spots or water staining, and rebuild or repair as needed.
• Confirm the rough opening size, since replacement units are not always an exact match for an older skylight's dimensions.
• Install ice-and-water shield around the opening, a step Alberta's freeze-thaw cycling makes especially important.
• Set the new unit on the curb or deck per the manufacturer's instructions, with proper fasteners and sealant.
• Install step and counter-flashing around all four sides, overlapping shingles correctly so water always sheds outward and down.
• Weatherproof the interior light shaft or ceiling opening if the unit or its trim has changed size or shape.
• Test for leaks and confirm any vented or solar-powered mechanism opens, closes and seals correctly.

A rushed or shortcut flashing step is the single most common cause of a skylight leak within the first year or two of a replacement, so it is worth asking any contractor specifically how they handle step and counter-flashing before you sign a quote. Whether a permit is required for the job depends on the scope, particularly if the opening size is changing or structural framing is involved; confirm this with the City of Airdrie or your municipality before work starts, and see our guide on roofing permits in Alberta for what typically triggers one.

Airdrie's position in Alberta's Hailstorm Alley matters directly for skylights, and it is a factor almost no generic skylight cost guide mentions. Hail large enough to damage asphalt shingles can crack or pit an acrylic dome outright and pit or craze glass units over repeated storms. The Aug 8 2026 Crossfield-Airdrie hailstorm brought quarter-sized hail and wind through this area, and the Aug 5 2024 Calgary hailstorm was the costliest hail event in Canadian history according to the Insurance Bureau of Canada, so local hail exposure is a documented risk rather than a theoretical one.

Chinook wind cycles put a different kind of stress on a skylight. Rapid temperature swings, sometimes 20 degrees Celsius or more within a day, expand and contract the flashing, sealant and curb materials repeatedly through a single winter, which accelerates the wear that eventually shows up as a flashing leak years before it might in a milder, more stable climate.

Freeze-thaw cycling adds a third layer. Meltwater that gets behind flashing or into a curb seam during a Chinook thaw refreezes overnight, and that expansion pries seams open a little further each cycle, similar to how ice dams work at the roof eaves generally. A skylight installed with proper ice-and-water shield and correctly lapped flashing resists this far better than an older unit installed before that was standard practice.

A skylight cracked or shattered by hail, or damaged by a falling tree branch in a windstorm, is generally the kind of sudden, accidental damage that home insurance policies are designed to cover, similar to hail damage on the surrounding shingles. Confirm exactly how your specific policy treats skylight damage, deductibles and depreciation with your insurer or broker before assuming full skylight replacement cost is covered.

A few mechanics are worth understanding before you file anything. Weigh the deductible first: a $1,500 to $3,000 skylight replacement against a typical deductible may not be worth claiming on its own, but bundled into a hail claim that already covers the shingles it usually is. Watch the scope next: skylights are commonly missed on a hail scope written from a ground inspection, so ask that the unit be listed as its own line item, with photos of the dome and flashing, rather than assumed to be included with the roof. Finally, ask how the settlement is calculated: whether the skylight replacement cost is settled at actual cash value or on a replacement-cost basis depends on your policy, and an actual-cash-value settlement pays the depreciated value of an older skylight while a replacement-cost policy pays the remaining balance once the work is done and invoiced. Confirm all three points with your own insurer or broker rather than assuming your policy works the way a neighbour's does.

A leak that develops slowly from old, failed flashing or a rotted curb is a different situation. Insurers often treat that as gradual wear and maintenance rather than sudden damage, and a claim for it can be denied on those grounds; confirm this distinction with your insurer as well, since it affects whether you should file a claim at all for a slow leak versus a storm-caused break. If a hailstorm is involved, our roof insurance claim service in Airdrie documents skylight and roof damage together, which supports a single, more complete claim rather than a partial one that misses the skylight.

A well-installed skylight in Alberta conditions typically lasts 15 to 25 years before the glazing, seals or curb reach the point where repair no longer makes sense, with acrylic domes generally at the shorter end of that range and quality glass units at the longer end. Solar-powered vented units add mechanical and electrical components that can need service or replacement on their own timeline within that overall lifespan, separate from the glazing and flashing.

Planning ahead matters more with skylights than with most roof components, because a skylight that fails unexpectedly mid-winter, during a Chinook thaw or in the middle of a hailstorm season is a far more urgent and disruptive repair than one scheduled proactively. If your skylight is approaching 15 years old, or you are already planning a reroof, it is worth having it assessed on the same visit rather than waiting for a leak to force the timing.

Season matters on a skylight more than on a shingle repair. Sealants, flashing tapes and ice-and-water shield all bond more reliably above freezing, and an opening cut into a roof deck in January is exposed to the weather for as long as the install takes. Late spring through early fall is the practical window in Alberta, and a skylight bundled into a reroof inherits that same timing. Winter replacement is possible when a unit has failed outright, but it is a repair-driven schedule rather than a planned one.

Most skylight leaks trace back to the flashing detail rather than a defective unit, which makes the installer's specific experience with skylights, not just roofing generally, worth confirming before you sign anything.

• Ask how many skylights they install in a typical year, since flashing technique is a skill built through repetition.
• Ask whether they will inspect and, if needed, rebuild the curb as part of the quote rather than assuming it is sound.
• Ask what ice-and-water shield they use around the opening and how far it extends past the curb.
• Ask for the manufacturer's specific flashing kit rather than a generic, universal flashing solution.
• Ask what the workmanship warranty covers, separate from the manufacturer's product warranty, and for how long.
• Ask whether they will coordinate the skylight with a reroof if one is planned, to capture the bundled pricing described above.

A free on-site estimate from Apex Roofing Airdrie covers the skylight, the surrounding roof and the curb together, with an itemised written quote that breaks down the actual skylight replacement cost for your roof, whether that turns out to be a repair, a straightforward unit swap, or a full replacement bundled into a larger reroof.