# Skylight Installation Markham | Velux & Fakro Certified

URL: https://skylightinstallationtoronto.ca/service-areas/markham/

![Skylight crew installing a Velux skylight on a GTA home roof](/images/misc/two-person-skylight-crew-installing-velux-skylight.webp)

Unionville, Cornell, Angus Glen and more · Same-day or next-day assessment

# Skylight Installation Markham: Residential, Commercial, Velux-Certified & Repair for Unionville, Cornell, Angus Glen & Cathedraltown

Last updated: October 5, 2026 · By The Skylight Installation Toronto Crew

Skylight

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 installation in Markham ranges from a single sun tunnel in a Cathedraltown powder room to our $84,000 12-bay warehouse install in the Highway 404 tech corridor. We frame, flash and finish every opening to OBC 9.7 and 9.26, coordinate building permits and quote in published CAD. Unionville, Cornell and Angus Glen homeowners get the same certified Velux and Fakro crews that handle our commercial work, and the on-site assessment is free.

-   Crews on the 404 and 407 daily
-   Serving Markham since 2005
-   220+ local installs
-   5-Star Satisfaction

Book a Free On-Site Assessment

[/contact/ →](/contact/)

 

(647) 254-2699

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

-   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

Sound Familiar?

## Markham Skylight Problems? Fast Help for Homes and Campuses

### Cracked plastic domes on 404 and 407 tech campus roofs

Water drips onto desks or racking after storms, and the domes overhead have gone cloudy and brittle.

**Why it happens here:** Over 1,100 technology and life science firms have offices here, many in low-rise campuses along Highways 404 and 407 with flat roofs and plastic domes that age faster than the membrane around them.

**How we fix it:** Our commercial skylight replacement crew swaps them for curb-mount glass units with fall-protection screens, phased bay by bay so work below carries on.

-   ### Brown stains around the shaft
    
    A ring on the drywall after every thaw usually means the head flashing or the ice and water shield behind it has failed, not the glass.
    
-   ### A room that needs lights at noon
    
    Deep floor plans and north-facing kitchens get no direct sun. Overhead glass delivers far more light than a wall window of the same size.
    
-   ### A yellowed, noisy acrylic dome
    
    Builder-grade bubbles turn brittle, drum in the rain and let summer heat pour in. Low-E glass fixes all three.
    
-   ### Drips that only show up in January
    
    Frost on the glass and wet shaft walls are often condensation. We test before quoting, so you never pay for flashing you do not need.
    

Services

## Skylight Solutions for Homes and Tech Campuses

Same published CAD pricing as downtown, no suburb surcharge, and the same certified crews.

 

![Commercial crew replacing old skylight panels on a Danforth library roof](/images/misc/commercial-crew-replacing-old-wired-glass-skylight.webp) From $6,000

### Commercial Skylight Replacement Toronto

Phased commercial skylight replacement coordinated with re-roofs and occupied buildings.

Explore Commercial Replacement

[Commercial Skylight Replacement Toronto →](/commercial-skylight-replacement/)

 

![Velux flat glass skylight on a raised curb atop a white TPO roof in Toronto](/images/misc/velux-flat-glass-skylight-on-raised-insulated-curb.webp) From $3,500

### Flat Roof Skylight Installation Toronto

Raised-curb flat roof skylights flashed into TPO, EPDM and SBS membranes.

Explore Flat Roof Skylights

[Flat Roof Skylight Installation Toronto →](/flat-roof-skylight-installation/)

 

![Velux sun tunnel diffuser lighting a windowless upstairs hallway](/images/misc/bright-round-velux-sun-tunnel-diffuser-lighting-wi.webp) From $1,800

### Sun Tunnel Daylighting Installation Toronto

Velux TGR rigid sun tunnels that pipe daylight into rooms a skylight cannot reach.

Explore Sun Tunnels

[Sun Tunnel Daylighting Installation Toronto →](/sun-tunnel-installation/)

### All 17 specialist services, most requested here first

-   Commercial Skylight Replacement Toronto
    
    [/commercial-skylight-replacement/ →](/commercial-skylight-replacement/)
    
-   Flat Roof Skylight Installation Toronto
    
    [/flat-roof-skylight-installation/ →](/flat-roof-skylight-installation/)
    
-   Sun Tunnel Daylighting Installation Toronto
    
    [/sun-tunnel-installation/ →](/sun-tunnel-installation/)
    
-   Residential Skylight Installation Toronto
    
    [/residential-skylight-installation/ →](/residential-skylight-installation/)
    
-   Commercial Skylight Installation Toronto
    
    [/commercial-skylight-installation/ →](/commercial-skylight-installation/)
    
-   Custom Skylight Design & Installation Toronto
    
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-   Residential Skylight Replacement Toronto
    
    [/residential-skylight-replacement/ →](/residential-skylight-replacement/)
    
-   Old Skylight Removal & Replacement Toronto
    
    [/old-skylight-removal-replacement/ →](/old-skylight-removal-replacement/)
    
-   Skylight Leak Repair Toronto
    
    [/skylight-leak-repair/ →](/skylight-leak-repair/)
    
-   Skylight Glass Replacement Toronto
    
    [/skylight-glass-replacement/ →](/skylight-glass-replacement/)
    
-   Skylight Flashing Repair Toronto
    
    [/skylight-flashing-repair/ →](/skylight-flashing-repair/)
    
-   Emergency Skylight Service Toronto 24/7
    
    [/emergency-skylight-service/ →](/emergency-skylight-service/)
    
-   Velux Certified Skylight Installation Toronto
    
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-   Velux Skylight Replacement Toronto
    
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-   Velux Blinds & Accessories Toronto
    
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-   Solar-Powered Skylight Installation Toronto
    
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-   Smart Rain-Sensor Skylights Toronto
    
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Service families: 

Skylight Installation Toronto

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Skylight Replacement Toronto

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Skylight Repair Toronto

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Velux Specialist Toronto

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Specialty Skylights Toronto

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Field-Tested Workflow

## How We Run Every Job

The same five steps on every job, whether it is one fixed unit over a hallway or a multi-panel commercial atrium.

1.  1
    
    ### Free On-Site Assessment
    
    A crew lead checks the room, attic, framing and roof, then recommends the Velux or Fakro model that fits how you will use the space.
    
2.  2
    
    ### Itemized CAD Quote
    
    Within two business days you get unit, labour, permit, flashing and disposal as separate lines. No bundled mystery number.
    
3.  3
    
    ### Permits, Honestly Priced
    
    We file the permit at cost plus admin time. Some installers over-charge for permits thinking homeowners wont check other quotes. We would rather you check.
    
4.  4
    
    ### Install + Founder Checklist
    
    Cut, frame, flash and close the roof in a day. Every job is signed off against our founder's flashing checklist, built over 20 years on GTA roofs.
    
5.  5
    
    ### Finish, Register, Enjoy
    
    Shaft finished, warranty registered, debris gone. Then stand under it for a minute. That part never gets old.
    

## Get a Free Roof and Skylight Check

Free on-site assessment, an itemized CAD quote and a lifetime leak-free flashing warranty. If your roof is not a good fit for a skylight, we tell you on the visit.

(647) 254-2699

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

 

Book Free Assessment

[/contact/ →](/contact/)

No Hidden Fees

## What Skylight Installation Costs, in CAD

These are the same published rates we use across the GTA. Every written quote splits out the unit, labour, permit, flashing and disposal.

Full Price List

[/pricing/ →](/pricing/)

Fixed Velux FS

$2,500 to $3,500

Venting Velux VS

$3,200 to $4,500

Solar Velux VSS

$4,500 to $7,500

Sun tunnel Velux TGR

$1,800 to $2,900

Same-size replacement

$2,200 to $4,800

Leak repair + flashing

$500 to $1,500

Local Expertise

## Why Unionville Owners and Facility Managers Call Us

-   $84,000 12-bay tech corridor warehouse install completed in two weeks
-   Sun tunnel and truss-bay installs for Cornell and Cathedraltown homes
-   Custom multi-unit arrays for Angus Glen and Unionville kitchens
-   Condensation diagnosis before any flashing work is quoted
-   City of Markham permits and Unionville heritage reviews handled
-   In-house WSIB crews, $5M liability, no subcontractors

![Bright GTA family kitchen after skylight installation](/images/misc/bright-gta-family-kitchen-after-skylight-installat.webp)

On the Ground

## Our Skylight Expertise in Markham

### Access: Highway 404, 407 and Main Street Unionville

Unionville and Cornell are a short run up the 404 from our East York yard. Tech corridor campuses along the 404 and 407 get early starts so rooftop work wraps before peak building traffic. Unionville's Main Street has tight parking and heritage storefronts, so we book loading times with the property owner and carry material by hand where a truck cannot stop.

Our $84,000 12-bay warehouse install took two weeks, phased bay by bay so racking below stayed in use. Fall-protection screens went on each opening the same day it was cut.

Permits go through City of Markham Building Standards. Unionville sits in a Heritage Conservation District, so visible skylights on Main Street buildings may need a heritage review.

### Roofs We Know: Tech Campuses, New Truss Homes and Heritage Main Street

**Highway 404 and 407 tech campuses.** Flat TPO and modified bitumen roofs over offices and warehouses. We install curb-mount units and Velux Dynamic Domes, tie into the membrane by substrate and add screens to MOL standard.

**Cornell and Cathedraltown homes.** Newer builds on engineered trusses, often with windowless powder rooms and long upstairs halls. Sun tunnels and truss-bay Velux units are the usual fix, with no truss cutting.

**Angus Glen and Unionville custom homes.** Larger openings over kitchens and great rooms, sometimes in multi-unit arrays. We frame with doubled headers and finish splayed light shafts so the daylight spreads across the room.

**Unionville heritage buildings.** Older Main Street buildings with mixed framing and brick parapets. We use reglet counter-flashing into the brick and low-profile units to respect the district.

### Winter Condensation in Tight New Builds

Newer Cornell and Cathedraltown homes are built tight, which keeps heat in but also traps humidity. In January, that shows up as condensation dripping from skylight glass and shaft walls. We separate condensation from a true leak with testing, then fix it with shaft insulation, a 6-mil poly vapour barrier and Low-E glass rather than new flashing you do not need.

### Local conditions we plan every job around

-   Over 1,100 technology and life science companies have offices in the city, close to Highways 404 and 407. Source: 
    
    en.wikipedia.org
    
    [https://en.wikipedia.org/wiki/Markham,_Ontario →](https://en.wikipedia.org/wiki/Markham,_Ontario)
    
-   The city has four Heritage Conservation Districts: Buttonville, Markham Village, Thornhill and Unionville. Exterior alterations inside them need a heritage permit. Source: 
    
    en.wikipedia.org
    
    [https://en.wikipedia.org/wiki/Unionville,_Ontario →](https://en.wikipedia.org/wiki/Unionville,_Ontario)
    
-   Main Street Unionville is a preserved heritage main street anchored at Kennedy Road and Highway 7. Source: 
    
    en.wikipedia.org
    
    [https://en.wikipedia.org/wiki/Markham,_Ontario →](https://en.wikipedia.org/wiki/Markham,_Ontario)
    

### Recent Skylight Projects

-   Markham tech corridor warehouse 12-bay skylight install, $84,000, 2 weeks

Customer Results

## What Local Customers Say After the Install

5-Star Satisfaction · Top-Rated Toronto Skylight Installer

> "Fakro FXP electric skylight in the home office, $5,700 CAD. Quiet, bright and the remote works from my desk."

KTKevin T.Unionville

> "Three Velux FS units in a new addition, $10,900 CAD, finished in two days with the shafts drywalled."

SYSandra Y.Angus Glen

> "Sun tunnel in our windowless powder room for $2,100 CAD. Guests ask where the light switch is."

WCWei C.Cathedraltown

Coverage

## Neighbourhoods and Postal Codes We Cover

-   Unionville (L3R)
-   Cornell (L6B)
-   Angus Glen (L6C)
-   Cathedraltown
-   Markham Village
-   Highway 404 tech corridor

**Postal codes we cover:** L3R, L3P, L6B, L6C, L6E, L6G

### Landmarks near our jobs

-   Main Street Unionville
-   CF Markville
-   Pacific Mall
-   Markham Stouffville Hospital

### How our trucks get to you

Highway 404 and Highway 407 connect the tech campuses, and Highway 7 runs past Main Street Unionville.

**Routes:** Highway 404, Highway 407, Highway 7

Straight Answers

## Common Questions About Our Markham Service

### Can you add a sun tunnel to a windowless room in a Cornell home?

Yes. A Velux TGR sun tunnel runs $1,800 to $2,900 CAD installed, takes about half a day and fits between trusses with very little drywall work.

### Do you install commercial skylights in the Markham tech corridor?

Yes. Our 12-bay warehouse install there came in at $84,000 over two weeks. We supply COI, WSIB clearance and shop drawings and phase the work around operations.

### Why is my new Cornell home's skylight dripping in winter?

In tight new homes it is often condensation, not a roof leak. We test to confirm, then add shaft insulation, a vapour barrier or better glass. If it is a real leak, we trace and fix the flashing.

### Is Unionville Main Street work subject to heritage review?

Yes. Unionville is one of four Heritage Conservation Districts in the city, with Buttonville, Thornhill and the old village, and exterior changes inside them need a heritage permit. We check the district plan, choose low-profile units and prepare drawings before the building permit goes in.

### What does a three-skylight addition cost in Markham?

Our Angus Glen three-unit Velux FS addition came in at $10,900 CAD. Four-unit addition installs run $9,500 to $18,000 depending on models and framing.

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/)

Nearby Service Areas

## We Also Serve

-   Skylight Installation Richmond Hill Oak Ridges, Jefferson
    
    [/service-areas/richmond-hill/ →](/service-areas/richmond-hill/)
    
-   Skylight Installation Toronto Downtown, Rosedale
    
    [/service-areas/toronto/ →](/service-areas/toronto/)
    
-   Skylight Installation Pickering Pickering Village, Bay Ridges
    
    [/service-areas/pickering/ →](/service-areas/pickering/)
    
-   Skylight Installation Vaughan Kleinburg, Woodbridge
    
    [/service-areas/vaughan/ →](/service-areas/vaughan/)
    

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

Free On-Site Assessment

## Need Skylight Work in Markham? Contact Us Now

Send us the room, the roof type and your timeline. A crew lead will book a visit, check framing and flashing, and send 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.

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