Skylight Installation in Markham, ON | Residential, Commercial, Velux-Certified & Repair for Unionville, Cornell, Angus Glen & Cathedraltown
· By The Skylight Installation Toronto Crew
Skylight Installation Toronto installs, replaces and repairs skylights across Unionville, Cornell, Angus Glen, Cathedraltown and the rest of Markham. We cut and frame roof openings on new-build subdivisions and heritage Unionville homes, flash to OBC 9.26 with Grace Ice & Water Shield, and set Velux and Fakro units matched to the asphalt, cedar and clay-tile roofs common across Markham.
Markham installs run $2,500 for a residential Velux FS up to $45,000 for a commercial retrofit on a Highway 7 or Buttonville office property, with most residential installs finished in a single day. Every job carries WSIB-covered crews, $5M CGL, OBC 9.7 fenestration compliance, Velux Certified Installer status since 2004, and a written workmanship warranty on flashing and glass.
- Crews on the 404 and 407 daily
- Serving Markham since 2005
- 220+ local installs
- 5-Star Satisfaction
- 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
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.
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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.
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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.
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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.
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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.
Skylight Solutions for Homes and Tech Campuses
Same published CAD pricing as downtown, no suburb surcharge, and the same certified crews.
From $6,000 Commercial Skylight Replacement Toronto
Skylight Installation Toronto handles commercial skylight replacement across offices, libraries, retail plazas, atria and industrial roofs in Toronto and the GTA. We stage phased removal of failing acrylic domes, fogged glass units and leaking atrium panels, then tie in new Velux CFP, Velux CVP, Fakro DMG or Fakro DXW units with fresh membrane seams, fall-protection screens and interior containment so the business stays open through the swap. Projects run from a single same-size swap at $6,000 to a $65,000 Vaughan Metropolitan Centre office-tower atrium, and we often time the work with a scheduled re-roof to share mobilization costs with the roofer. Every unit is backed by WSIB-covered crews, $5M CGL, OBC 9.7 compliance, Velux 10/20-year or Fakro 10-year product warranty passthrough, and a lifetime leak-free flashing warranty on our install.
Explore Commercial Replacement
From $3,500 Flat Roof Skylight Installation Toronto
Skylight Installation Toronto installs flat-roof skylights on condo terraces, laneway suites, rear additions, commercial roofs and modern residential cubes across Toronto and the GTA. We build raised insulated curbs on low-slope roofs, flash into TPO, EPDM, SBS and modified bitumen membranes, and set Velux CFP flat glass, Velux CVP curb-mount or Fakro DXW walkable units so ponding water, drifting snow and freeze-thaw never reach the opening. Flat-roof projects run from $3,500 for a single CFP install on a residential addition up to $45,000 for a walkable terrace or multi-panel commercial array. Every job carries WSIB-covered crews, $5M CGL, OBC 9.7 fenestration compliance, laminated or tempered glass to code, and a written workmanship warranty on the curb flashing, membrane tie-in and glazing seal.
Explore Flat Roof Skylights
From $1,800 Sun Tunnel Daylighting Installation Toronto
Skylight Installation Toronto installs sun tunnels and tubular daylight devices for dark hallways, closets, interior bathrooms and basement stairwells where a full skylight will not fit across Toronto and the GTA. We drill a 10-inch, 14-inch or 22-inch roof penetration, run a reflective rigid or flexible tube through the attic, and finish the ceiling diffuser so the room gets natural daylight without ceiling access to the roof. Sun tunnel installs run $1,800 for a basic Velux TGR 10-inch kit up to $2,900 for a Velux TMR flexible 22-inch rigid-tube install with solar night light and dimmer. Every install includes OBC 9.7 compliance, factory flashing kit matched to your roof type, Velux Certified Installer status since 2004, and a written workmanship warranty on roof penetration and ceiling diffuser seal.
Explore Sun TunnelsAll 17 specialist services, most requested here first
- Commercial Skylight Replacement Toronto
- Flat Roof Skylight Installation Toronto
- Sun Tunnel Daylighting Installation Toronto
- Residential Skylight Installation Toronto
- Commercial Skylight Installation Toronto
- Custom Skylight Design & Installation Toronto
- Residential Skylight Replacement Toronto
- Old Skylight Removal & Replacement Toronto
- Skylight Leak Repair Toronto
- Skylight Glass Replacement Toronto
- Skylight Flashing Repair Toronto
- Emergency Skylight Service Toronto 24/7
- Velux Certified Skylight Installation Toronto
- Velux Skylight Replacement Toronto
- Velux Blinds & Accessories Toronto
- Solar-Powered Skylight Installation Toronto
- Smart Rain-Sensor Skylights Toronto
Service families: Skylight Installation Toronto · Skylight Replacement Toronto · Skylight Repair Toronto · Velux Specialist Toronto · Specialty Skylights Toronto
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.
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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.
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Itemized CAD Quote
Within two business days you get unit, labour, permit, flashing and disposal as separate lines. No bundled mystery number.
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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.
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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.
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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.
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- 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
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
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
- 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
- Main Street Unionville is a preserved heritage main street anchored at Kennedy Road and Highway 7. Source: en.wikipedia.org
Recent Skylight Projects
- Markham tech corridor warehouse 12-bay skylight install, $84,000, 2 weeks
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."
"Three Velux FS units in a new addition, $10,900 CAD, finished in two days with the shafts drywalled."
"Sun tunnel in our windowless powder room for $2,100 CAD. Guests ask where the light switch is."
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
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.
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
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.