# Velux Skylight Replacement Toronto | $2,500-$6,500

URL: https://skylightinstallationtoronto.ca/velux-skylight-replacement/

Data Plate Matched · Brand-Switch Curb Retrofits

# Velux Skylight Replacement in Toronto, ON | Old Velux Units & Brand-Switch Curb Retrofits

Last updated: October 4, 2026 · By The Skylight Installation Toronto Crew

Skylight Installation Toronto

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 replaces old Velux units with new FS, VS, VCS, VSS or FSR models across Toronto, Mississauga, Vaughan, Markham, Oakville and the rest of the GTA. We also handle brand-switch curb retrofits where an old Fakro or acrylic dome unit is swapped onto a new Velux-fit curb, so you can standardize to a single brand with Velux Certified installation and warranty support.

Velux replacement runs $2,500 for a same-size FS swap up to $7,500 for a VSS solar-powered unit with laminated glass and Low-E, with brand-switch curb retrofits adding $800 to $1,500. Every replacement includes Velux Certified Installer status since 2004, OBC 9.7 fenestration compliance, Velux 10/20-year product warranty passthrough, and a written workmanship warranty on flashing, curb retrofit and glass seal.

-   20 Yrs GTA
-   Velux Certified
-   Fakro Certified
-   OBC 9.7 Compliant
-   $5M Liability
-   Lifetime Flashing Warranty

Book a Free On-Site Assessment

[/contact/ →](/contact/)

 

(647) 254-2699

[tel:+16472542699 →](tel:+16472542699)

$2,500 to $6,500 per unit CAD, published pricing

![Crew replacing a 20-year-old Velux with a current model in the same opening](/images/misc/crew-removing-20-year-old-velux-skylight-and-setti.webp)

Active GTA Site Crew OBC 9.7 Certified

-   5-Star Satisfaction
-   Top-Rated Toronto Skylight Installer
-   Velux Certified Installer
-   Fakro Certified
-   OBC 9.7 & 9.26 Compliant
-   $5M Liability + Full WSIB
-   Lifetime Leak-Free Flashing Warranty
-   24/7 Emergency Leak Response

Why GTA Owners Trust Us

## Why Toronto Trusts Skylight Installation Toronto for Velux Replacement

2,000+ skylights installed across the GTA in 20 years, with in-house WSIB crews, certified Velux and Fakro installs and pricing you can see before anyone climbs a ladder.

### 20 Years of Skylight Installation

Two decades installing Velux and Fakro skylights across the GTA, from our first VCI certification in 2004 to three install trucks on the road today.

### Velux + Fakro Certified Installer

Both certifications verified every year. Direct dealer accounts, factory warranty passthrough and model-specific install protocols.

### OBC 9.7 + CSA A440 Compliant

Every install follows Ontario Building Code 9.7 fenestration, 9.26 roofing and CSA A440. Permit coordination is part of the job.

### Full Crew, Zero Subcontracting

Every installer is an in-house, WSIB-covered employee. No rental crews and no subcontractors on your roof.

### Written Workmanship Warranty

Lifetime leak-free warranty on install flashing, plus Velux 10/20-year and Fakro 10-year product warranty passthrough.

### Transparent CAD Pricing

Install, replacement, repair and accessory rates are published. Every quote itemizes unit, labour, permit, flashing and disposal.

![Velux data plate showing the model and size code](/images/misc/close-up-of-velux-data-plate-label-on-skylight-fra.webp)

Velux data plate showing the model and size code

## How Velux Replacement Works

A lot of GTA homes have Velux skylights from the 1990s and early 2000s. They were good units, but 20+ years of Toronto weather wears out seals, gaskets and flashing. The good news is that Velux has kept its sizing system consistent, so an old unit can usually be replaced with a current model in the same opening.

We start with the data plate. It tells us the model and size code, which tells us exactly which new unit and flashing kit to order. If there is no plate, we measure the rough opening and match it.

## The 4 Velux Replacement Paths

1.  **Same-size, same model** for a straight swap.
2.  **Same-size upgrade** from fixed FS to venting VS or solar VSS.
3.  **Brand switch** from a non-Velux unit to a Velux FCM curb-mount.
4.  **Enlargement** to a larger Velux size with reframing.

## Residential Velux Replacement

### Kitchens

Fogged FS units upgraded to VS or VSS. Older Velux FS units over a cooktop usually fail at the seal first because of the heat and steam. A same-size upgrade to VS manual venting or VSS solar venting adds real exhaust without enlarging the opening, and the swap is usually done by mid-afternoon.

### Bathrooms

Failed seals and condensation, upgraded glass. Steam from a shower will fog an old Velux seal long before the rest of the bathroom fails. A replacement lets us swap to current Low-E3 laminated bathroom glass and reseat the shaft to today’s air-sealing standards under OBC 9.7 and 9.26.

### Bedrooms

VSS upgrade plus blackout blind. Replacing an old fixed Velux in a bedroom is the cheapest time to step up to a solar VSS venting unit and add a solar-powered blackout blind on the same visit. You get fresh air, true blackout sleep, and a new factory warranty on the whole package, all in one swap.

### Stairwells

Hard-to-reach units become solar. Stairwell skylights are the worst to operate with a hand crank because of the ladder angle, so a replacement is the moment to swap the manual VS for a solar VSS with a remote. After the swap you can open and close the stairwell skylight from the landing without a stick or a step stool.

### Attics

Multiple units replaced in one visit. If three or four units are on the same slope and were installed in the same era, the seals usually fail within a year of each other. We batch the replacement so the crew, the disposal bin and the flashing kit order happen once, which usually drops the per-unit price by a couple hundred.

### Bungalows

FCM curb-mount retrofits on low slopes. Toronto bungalows often have 3-in-12 pitches where the original deck-mount Velux has leaked at the flashing for years. A brand switch to a Velux FCM curb-mount on a rebuilt curb solves it permanently and lets us choose a larger size code while we are at it.

## Commercial Velux Replacement

### Offices

Like-for-like replacements with minimal disruption. Office tenants cannot afford a week of tarps over the reception desk, so we schedule a same-size Velux swap over a weekend or a single business day. The flashing kit, insulation and drywall are done in one visit and the warranty is registered before the office re-opens.

### Condo Buildings

Penthouse and amenity units, board-approved. Penthouse skylights and amenity room units usually require board approval, proof of WSIB coverage and a $5M COI before the work starts. We have the standard paperwork on hand, file the engineer-stamped drawing if a curb is being modified, and only schedule after the board signs off.

### Retail

Swaps before opening. Retail skylight swaps usually happen overnight or before a Monday opening so customers never see scaffolding on the sidewalk. The old unit is removed, the new Velux and flashing kit are set, and the interior is sealed and painted before staff arrive in the morning.

### Clinics

Laminated replacements over patient areas. Clinics and treatment rooms need laminated glass for safety and to keep rain-on-tin noise out of the appointment. We pair a Velux laminated Low-E3 unit with a sound-dampening shaft detail so the room stays quiet and the glazing meets OBC 9.7 safety standards for overhead glazing.

## Specialty Velux Replacement

### Curb Adapters

For brand switches onto existing curbs. When you are switching off a non-Velux unit, the existing curb is usually the right size for a Velux FCM with a small adapter. We shim and seal the adapter to OBC 9.26 standards so the new Velux sits flat on the old curb and the flashing kit integrates with the existing roof system.

### Solar Upgrades

VSS with rain sensor. If you have been living with a crank rod for twenty years, replacing an old Velux FS with a current VSS solar venting unit is the upgrade that pays for itself. The VSS adds a remote, a built-in rain sensor that closes the glass on the first drops, and no electrician to schedule because the unit powers itself.

### Electric to Solar

Replacing failed VCS motors with VSS units when wiring is a problem. Older VCS motors fail before the frame does, and chasing new wire through a finished ceiling is expensive. A same-size VSS swap drops onto the same opening with no electrician, no ESA permit, and you keep the venting function with a remote instead of a keypad.

### Blind Add-Ons

Ordered with the new unit. Adding a Velux blackout or heat-reducing blind at the time of replacement costs less than a second visit later because we are already on site. Blackout blinds cut roughly 99 per cent of light for bedrooms and heat-reducing blinds drop summer gain on south-facing slopes.

## Replacement Parts and Materials

| Situation | What we use |
| --- | --- |
| Velux to Velux | Matched size code, new EDL/EDW/EDM kit |
| Non-Velux to Velux | Velux FCM + curb adapter or new curb |
| Upgrade | VS or VSS in the same size code |
| Underlayment | Grace Ice & Water Shield, Velux collar |

## Our Velux Replacement Expertise

We have decoded hundreds of Velux data plates and know which older models need adapters. Nine times out of ten, a failing old Velux just needs the new unit and a new kit, not a whole new opening.

## What Actually Stops Owners From Replacing an Old Velux

### “It’s a Velux, it should last forever.”

In our opinion, 20 to 25 years is a great run for any skylight. Seals and gaskets do wear out.

### “They don’t make my model anymore.”

The size code still matches a current model. Velux has kept its sizing system consistent since the 1990s, so a 1998 FS C06 unit still matches a current FS C06. The internal upgrades are usually better glass, a current rain sensor and a refreshed flashing kit design.

### “I’d rather just reseal it.”

Fogged glass cannot be resealed. Replacement or a new sash is the fix.

### “Replacing means a permit.”

Same-size swaps usually do not need one. A same-size Velux for Velux swap in the same opening is treated as maintenance by Toronto building departments and rarely needs a permit. Enlarging the opening, reframing a truss or cutting a rafter triggers a permit, which we pull as a separate line on the quote.

## Velux Replacement Timeline

### Data Plate Check

Free assessment. We come out, climb into the attic or open the existing unit, and read the Velux data plate on the sash or frame. From the model and size code we can usually give you a firm replacement price on the spot, before any deposit is taken.

### Ordering

One to two weeks. Common Velux sizes ship from the Toronto Velux warehouse in three to five business days, so most replacements are scheduled within two weeks of the data plate check. Specialty glass or colour-matched frames can stretch to three weeks, and we will say so up front.

### Swap

Half a day to a day. The crew strips the old Velux, disposes of it, sets the new unit and flashing kit, and reseats the shaft insulation in a single visit. Most same-size swaps in finished rooms wrap by mid-afternoon, with the drywall finished and the room cleaned before we go.

### Warranty

Registered fresh. The factory warranty on the new Velux starts the day of install and we register it online before we go. You get the confirmation by email the same day, plus our lifetime leak-free flashing warranty, so a leak in the install is on us for as long as you own the roof.

## Velux Replacement Cost in Toronto: What You Are Paying For

### New Velux Unit

Matched or upgraded. A same-model Velux for Velux swap runs from $2,500 per unit. Upgrading the same opening from fixed FS to manual VS adds a few hundred, and a step up to solar VSS lands around $4,500 to $6,500 installed because the unit itself is more expensive.

### Flashing Kit

New every time. The flashing kit is never reused on a Velux replacement because the gaskets and sealants are designed for a single install. EDL goes on asphalt, EDW on profiled tile or metal, EDM on low-profile materials, and the Velux underlayment collar wraps every install.

### Removal and Disposal

Included. We strip the old Velux, drop it into our disposal bin, and haul it away the same day so you are not parking a long trek for the roofer. If the old frame is glued in with old flashing cement we cut it out in sections rather than pry it, which protects the surrounding shingles.

### Curb Work

Adapter or repair if needed. Brand switches from a non-Velux unit onto an existing curb use a Velux curb adapter so the FCM sits flat and square. If the existing curb is too rotted to anchor into, we tear it down and rebuild it on site before the new unit goes in.

### Upgrade Premium

For VS or VSS. Going from a fixed Velux FS to a manual VS adds about $400 to $1,000 per unit because the venting frame, hinge and operator are pricier. Stepping up to the VSS solar venting unit adds the integrated solar panel, battery and remote, which usually lands around $4,500 to $6,500 fully installed.

### Blinds

Optional. Velux blackout, light-filtering and heat-reducing blinds can be ordered with the new unit and installed the same day. Adding them with the replacement visit saves the labour of a second trip and you walk into a finished room that is light and climate controlled from night one.

## Velux Replacement vs New Install vs Repair: Which Service You Need

Old Velux, same spot: this page. No skylight yet: 

Velux installation

[/velux-skylight-installation/ →](/velux-skylight-installation/)

. Just a leak: 

flashing repair

[/skylight-flashing-repair/ →](/skylight-flashing-repair/)

.

## Fixed, Venting or Solar: Choosing Your Skylight Type

Replacement is the cheapest time to upgrade from fixed FS to VS or solar VSS.

## Velux Replacement Timeline in Toronto: What to Expect Week-by-Week

Assessment week one, delivery in one to two weeks, swap in a day.

## Why Toronto Homeowners Trust Our Velux Replacements

We have been decoding Velux data plates and replacing failed units across Toronto and the GTA for over twenty years and more than 2,000 skylights, certified as Velux Certified Installers since 2004. Every replacement is detailed to OBC 9.7 for the fenestration and OBC 9.26 for the roofing, with a brand-new EDL, EDM or EDW flashing kit matched to the roof you actually have. Every crew is in-house, WSIB-covered and on payroll with us, so no subcontractors touch the opening, and each quote is itemized with the permit (when one is needed) as its own line. You get a fresh factory warranty registered the same day, plus our lifetime leak-free flashing warranty, and pricing is published so the quote is the quote. Trust us, you’re in good hands.

Field-Tested Workflow

## How Our Velux Replacement Process Works, 5 Steps

The same five steps on every job, whether it is one skylight over a Leaside bathroom or a warehouse full of bays.

1.  1
    
    ### Read the Data Plate
    
    We find the Velux label on your sash or frame, decode the model and size, and check the curb and flashing.
    
2.  2
    
    ### Match or Upgrade
    
    Same model, upgrade to venting or solar, or a curb-mount retrofit for non-Velux units. Itemized quote.
    
3.  3
    
    ### Permits Rarely Needed
    
    Same-opening swaps usually skip them. Some installers over-charge for permits thinking homeowners wont check other quotes.
    
4.  4
    
    ### Swap to Protocol
    
    Old unit out, new Velux and flashing kit in per factory instructions, checked against our founder's VCI checklist.
    
5.  5
    
    ### New Warranty
    
    Factory warranty registered fresh. Old unit hauled away.
    

No Hidden Fees

## Velux Replacement Pricing in Toronto (CAD)

Replacement includes removal, new flashing kit, warranty registration and disposal.

Most Booked

Same-size Velux swap

$2,500 to $4,200

CAD, installed

Data plate matched

Book Free Assessment

[/contact/ →](/contact/)

Brand switch to Velux FCM

$2,800 to $4,800

CAD, installed

Curb-mount retrofit

Book Free Assessment

[/contact/ →](/contact/)

Upgrade to Velux VSS solar

$4,500 to $6,500

CAD, installed

Remote and rain sensor

Book Free Assessment

[/contact/ →](/contact/)

Every quote itemizes unit cost, install labour, permit, flashing and disposal. The on-site assessment is free anywhere in the GTA. 

See the full price list

[/pricing/ →](/pricing/)

Recent Work

## Our Velux Replacement Work Across the GTA

Real roofs, real flashing details. Click any photo to enlarge.

 

Customer Results

## What GTA Clients Say About Our Velux Replacement

5-Star Satisfaction · Top-Rated Toronto Skylight Installer

> "Our 1999 Velux was fogged. Data plate matched, new one in for $3,600 CAD in a morning, warranty registered."

DFDouglas F.Glen Abbey, Oakville

> "Switched our old no-name skylight to a Velux FCM curb-mount for $3,900 CAD. No more drips at the corner."

ILIrene L.Bramalea, Brampton

> "Upgraded our fixed Velux to a solar VSS for $6,300 CAD. Worth every dollar the first hot afternoon."

TKThomas K.Lorne Park, Mississauga

Service Areas

## Velux Replacement Across Toronto and 9 GTA Cities

Same crews, same published pricing and the same lifetime flashing warranty from Rosedale to Milton. Pick your city for local permits, neighbourhoods and roof types.

View All Service Areas

[/service-areas/ →](/service-areas/)

-   Skylight Installation Toronto Downtown, Rosedale, Yorkville
    
    [/service-areas/toronto/ →](/service-areas/toronto/)
    
-   Skylight Installation Mississauga Lorne Park, Erin Mills, Port Credit
    
    [/service-areas/mississauga/ →](/service-areas/mississauga/)
    
-   Skylight Installation Vaughan Kleinburg, Woodbridge, Thornhill
    
    [/service-areas/vaughan/ →](/service-areas/vaughan/)
    
-   Skylight Installation Markham Unionville, Cornell, Angus Glen
    
    [/service-areas/markham/ →](/service-areas/markham/)
    
-   Skylight Installation Brampton Springdale, Bramalea, Mount Pleasant
    
    [/service-areas/brampton/ →](/service-areas/brampton/)
    
-   Skylight Installation Oakville Bronte, Downtown Oakville, Glen Abbey
    
    [/service-areas/oakville/ →](/service-areas/oakville/)
    
-   Skylight Installation Burlington Downtown Burlington, Aldershot, Alton Village
    
    [/service-areas/burlington/ →](/service-areas/burlington/)
    
-   Skylight Installation Richmond Hill Oak Ridges, Jefferson, Mill Pond
    
    [/service-areas/richmond-hill/ →](/service-areas/richmond-hill/)
    
-   Skylight Installation Pickering Pickering Village, Bay Ridges, West Shore
    
    [/service-areas/pickering/ →](/service-areas/pickering/)
    
-   Skylight Installation Milton Milton Industrial Park, Bronte Meadows, Harrison
    
    [/service-areas/milton/ →](/service-areas/milton/)
    

Related Services

## Related Skylight Services

 

![Installers setting a new Velux FS into an existing opening after removing a fogged unit](/images/misc/two-installers-setting-new-velux-fs-skylight-into-.webp) From $2,200

### Residential Skylight Replacement Toronto

Skylight Installation Toronto replaces leaking, fogged, drafty and outdated home skylights across Toronto, Mississauga, Vaughan, Markham, Oakville and the GTA. We lift the old unit, inspect and repair the curb and deck framing, install new ice-and-water shield around the perimeter, then set a Velux FS, Velux VSS, Fakro FTT or Fakro FXP unit with a fresh factory flashing kit matched to your roof type. Same-size residential swaps run $2,200 to $4,800, with Low-E glass and laminated upgrades available depending on orientation and energy targets. Most installs finish in a single day with drop sheets inside and no drywall tear-out, and every replacement is backed by OBC 9.7 compliance, WSIB-covered crews with $5M CGL, written parts-and-labour warranty, and a lifetime leak-free flashing warranty on our install.

Explore Residential Replacement

[Residential Skylight Replacement Toronto →](/residential-skylight-replacement/)

 

![Certified crew installing a Velux VS with an EDL flashing kit on a Toronto roof](/images/misc/certified-two-person-crew-installing-velux-vs-vent.webp) From $2,800

### Velux Certified Skylight Installation Toronto

Skylight Installation Toronto handles Velux Certified installation of FS fixed, VS manual venting, VCS electric venting, VSS solar-powered and FSR replacement units across Toronto, Mississauga, Vaughan, Markham, Oakville and the rest of the GTA. We follow the Velux model-specific protocol, fit the correct EDL, EDM or EDW flashing kit for your roof type, and register the full factory warranty on your behalf. Velux installs run $2,800 for an FS fixed in a residential kitchen up to $7,500 for a VSS solar-powered opening with laminated glass and rain sensor. Every install includes OBC 9.7 fenestration compliance, Velux Certified Installer status since 2004, Velux 10/20-year product warranty registration, and a written workmanship warranty on flashing and structural tie-in, with parts arriving on time through our direct Velux Canada dealer account.

Explore Velux Installation

[Velux Certified Skylight Installation Toronto →](/velux-skylight-installation/)

 

![Installer removing a yellowed 1980s acrylic bubble skylight from a Mississauga roof](/images/misc/installer-removing-yellowed-cracked-1980s-acrylic-.webp) From $2,200

### Old Skylight Removal & Replacement Toronto

Skylight Installation Toronto removes and replaces old acrylic domes, rotted curbs, failed-seal units and leaking skylights from 1980s and 1990s Toronto homes across Mississauga, Scarborough, Brampton, Etobicoke and the rest of the GTA. We tear off the dome, assess and repair rotted deck and curb framing, then convert the opening to a modern Low-E glass Velux FS or Fakro FTT skylight or close it permanently with framing, sheathing and roofing matched to the surrounding assembly. Removal-and-replacement runs $2,200 to $4,800 for a standard same-size swap, more if the curb framing is water-damaged. Every job includes OBC 9.7 flashing, laminated or tempered glass, written parts-and-labour warranty, WSIB-covered crews with $5M CGL, and a permanent close option if you decide the opening is no longer worth maintaining.

Explore Old Skylight Removal

[Old Skylight Removal & Replacement Toronto →](/old-skylight-removal-replacement/)

![](/images/misc/two-person-skylight-crew-on-a-toronto-residential-.webp)

Free On-Site Assessment

## Ready to Book Velux Replacement?

Tell us about the room, the roof and your timeline. A crew lead visits, checks the roof and framing, recommends the right Velux or Fakro model and sends a written CAD quote within two business days.

-   Itemized CAD quote: unit, labour, permit, flashing, disposal
-   Lifetime leak-free flashing warranty
-   In-house WSIB crew, no subcontractors

Call (647) 254-2699

[tel:+16472542699 →](tel:+16472542699)

 

See Published Pricing

[/pricing/ →](/pricing/)

Book a Free On-Site Assessment

Free roof condition check + model recommendation across the GTA.

Thanks, we got your message.

A crew lead will call you back within one business day. For leaks, call (647) 254-2699 now.

Straight Answers

## Velux Replacement FAQ: 12 Questions Toronto Clients Ask

### How much does Velux skylight replacement cost in Toronto?

Same-size Velux swaps run $2,500 to $4,200 CAD, brand-switch FCM curb-mount retrofits $2,800 to $4,800 and upgrades to solar VSS $4,500 to $6,500.

### Where is the Velux data plate?

Usually on the top of the sash or inside the frame when the sash is opened. It lists the model and size code, like FS C06 or VS M04.

### My Velux model is discontinued. Can you still replace it?

Yes. Velux sizes have stayed consistent, so we match the size code to the current equivalent model.

### Can you replace a non-Velux skylight with a Velux?

Yes. A Velux FCM curb-mount unit sits on an existing or adapted curb, which is often the cleanest brand-switch solution.

### Can I upgrade from fixed to solar during replacement?

Yes. If the opening matches a VSS size, it is a straightforward upgrade.

### Do you replace the flashing too?

Always. A new Velux flashing kit goes on every replacement.

### Do I need a permit?

Not for same-opening swaps. Enlargements need one.

### How long does it take?

Usually half a day to a day per unit.

### Will my new Velux have a new warranty?

Yes, a full new factory warranty, registered at handover, plus our lifetime leak-free flashing warranty.

### Can you replace just the Velux sash?

Sometimes. On some models a replacement sash is available. If the frame and flashing are old too, a full replacement is better.

### Is a Velux replacement cheaper than a new install?

Usually, because there is no new opening to cut and no permit for same-size work.

### Can I add a blind during replacement?

Yes. Ordering the blind with the new unit saves a second visit.

Still have a question?

Talk to a crew lead, not a call centre.

Call (647) 254-2699

[tel:+16472542699 →](tel:+16472542699)

Send a Message

[/contact/ →](/contact/)