We repair leaking and damaged skylights by addressing faulty flashing, seals, waterproofing, and surrounding roofing materials to help prevent water intrusion and restore reliable performance.
Skylights
Skylight Repair & Replacement in Toronto
Professional Skylight Repair & Replacement in Toronto — From Leaking and Damaged Skylights to Complete Replacements, We Provide Reliable Solutions to Protect Your Roof, Improve Performance, and Bring Natural Light Back Into Your Home.
Trusted Skylight Repair Company in Toronto
Roofer On Demand provides professional skylight repair and replacement services for leaking, damaged, aging, and inefficient skylights. Our team identifies the source of skylight leaks and evaluates the surrounding flashing, roofing materials, seals, and waterproofing to determine the right solution. From minor skylight repairs and flashing corrections to complete skylight replacements and new VELUX installations, every service is completed with long-term performance in mind. We work with both sloped and flat roofing systems, helping homeowners improve waterproofing, energy efficiency, and natural light. Whether your skylight needs a simple repair or full replacement, we provide practical solutions designed to protect your roof and home.
We replace aging, leaking, or damaged skylights with properly installed new units, complete with the appropriate flashing and waterproofing for reliable, long-lasting performance.
Professional VELUX skylight installation, repair, and replacement for flat and sloped roofs, using the appropriate flashing and waterproofing systems for reliable, energy-efficient, and long-lasting performance.
We repair leaking and damaged flat roof skylights by addressing flashing, waterproofing membranes, seals, curbs, and surrounding roof areas to help stop water intrusion.
We replace aging or damaged flat roof skylights with properly fitted new units, including curb, flashing, and membrane integration to create a durable, watertight installation.
Diagnosis
Leaking Skylight? We Find the Cause Before We Repair it
A leaking skylight does not always mean the skylight needs to be replaced. Water can enter for several reasons. We inspect the skylight, surrounding roofing materials, flashing seals, and waterproofing to identify the true source of the leak before recommending the right solution.
Common Causes of Leaking Skylights
Damaged or Improper Flashing
Cracked, loose or incorrect flashing is one of the most common causes of leaks
Detriorated Seals
Aging or hardened seals around the skylight can allow water to seep inside.
Cracked Glass
Impact, temperature changes and age can cause cracks or failure in the skylight unit.
Aging Roofing Materials
Worn shingles, membranes or underlayment around the skylight can let water in.
Failed Waterproofing
Deteriorated ice & water shield, caulking or membranes can compromise the water barrier.
Condensation Buildup
Excess moisture inside the home can cause
condensation on the skylight.
Ice & Snow Conditions
Ice dams and wind-driven rain can push water under flashing and into vulnerable areas.
Flat Roof Curb Issues
Leaks can develop where the roofing membrnae connects to the skylight curb or where water ponds near by
Repair vs Replacement
Skylight Repair vs. Replacement — Which Do You Need?
Not every skylight problem requires replacement. In many cases, a localized leak or flashing issue can be repaired, while an aging, damaged, or repeatedly leaking skylight may be better suited for replacement. The condition of the skylight, surrounding roof, and source of the problem all help determine the right solution.
Skylight Repair
Consider a Skylight Repair When
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Skylight is still in good condition The unit itself remains serviceable and the problem is localized.
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Leak is around the flashing Flashing or surrounding waterproofing can potentially be corrected.
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Minor seals need attention Localized sealing or waterproofing issues can be addressed.
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Roofing around the skylight is damaged Surrounding roofing materials may be repaired without replacing the skylight.
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Problem is isolated The source can be identified and repaired without replacing the complete unit.
Skylight Replacement
Consider a Skylight Replacement When
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Skylight is old or deteriorated An aging unit may no longer justify continued repairs.
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Glass seal has failed Fogging or moisture between panes may indicate insulating glass failure.
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Frame or components are damaged Significant deterioration can make replacement the better long-term option.
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Leaks keep returning Repeated repairs may indicate a more extensive problem with the existing installation.
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Major roofing work is planned Roof replacement can be an ideal time to replace an aging skylight.
Skylight Warranties that Protect Your Investment
We combine VELUX manufacturer-backed product warranties with our own workmanship warranty to give homeowners greater confidence and long-term peace of mind in their skylight installation.
Manufacturer Warranty
Velux 20 Years Limited Warranty
VELUX skylights are backed by industry-leading warranties, including protection against material defects, leaks, and glass seal failure—giving homeowners lasting confidence and peace of mind.
20 Years limited coverage Available on all eligible Velux skylight products
Skylight Replacement Warranty
Skylight Replacement Workmanship Warranty
We stand behind the workmanship of qualifying skylight installations and repairs with written warranty protection.
10 years of coverage Available on qualifying complete skylight replacements
Skylight Repair Warranty
Skylight Repair Workmanship Warranty
Qualifying skylight repairs include a 90-day workmanship warranty beginning on the project completion date.
90 days of coverage Available on qualifying skylight repair services.
Our Promise
Why Homeowners Choose Us
Homeowners choose Roofer On Demand because we focus on finding the right solution, not simply selling a replacement. We evaluate the skylight together with the surrounding roofing system to identify the true source of leaks and other problems. When a practical repair makes sense, we’ll explain it. When replacement is the better long-term option, we’ll explain why. With experience across flat and sloped roofs, different roofing systems, and VELUX skylights, our approach combines proper diagnosis, clear recommendations, careful waterproofing, and professional installation—giving homeowners confidence in the work being done above their home.
We Diagnose Before We Repair
We inspect the skylight and surrounding roofing system to identify the source of the problem before recommending a solution.
Repair When Repair Makes Sense
Not every leaking skylight needs replacement. When a practical repair is appropriate, we’ll explain that option.
Roof & Skylight Expertise
We understand how skylights interact with asphalt shingles, flat roofing membranes, cedar, slate, flashing and waterproofing systems.
The Right Solution for the Roof
Recommendations are based on the skylight, roofing system and site conditions—not a one-size-fits-all approach.
Clear Recommendations
We explain what we find, what needs attention and the repair or replacement options available.
Built Around Lasting Performance
Our approach focuses on proper flashing, waterproofing and roofing integration to help provide dependable long-term performance.
How It Works
Repairing or replacing a skylight should be straightforward. We inspect the skylight and surrounding roof, identify the problem, and determine whether repair or replacement is the right solution. We clearly explain our findings, recommendations, and proposed work before moving forward.
Designed for flat and low-slope roofs, curb-mounted skylights are installed over a raised curb to provide superior weather protection, durability, and long-term performance.
Ideal for sloped roofs, deck-mounted skylights sit directly on the roof deck for a clean, low-profile appearance while delivering excellent energy efficiency and a watertight seal.
Bring natural light into flat-roof homes and commercial buildings with professionally installed skylights designed for SBS, EPDM, TPO, PVC, and modified bitumen roofing systems.
Improve natural light and indoor ventilation with manual or electric venting skylights that help release heat, humidity, and stale air from kitchens, bathrooms, lofts, and living spaces.
Skylights for Every Roof System
Velux Skylights
Why we install only VELUX® Skylights
At The Roof Whisperer, we install VELUX® skylights because they consistently deliver the quality, reliability, and long-term performance our customers expect. As a global leader in skylight manufacturing, VELUX products are engineered for exceptional energy efficiency, durability, and weather resistance, helping protect your home against Ontario’s changing climate. Their innovative flashing systems are designed to integrate seamlessly with a wide range of roofing materials, significantly reducing the risk of leaks when installed correctly. With options including fixed, venting, solar-powered, and blinds-integrated skylights, VELUX offers solutions for virtually every home and lifestyle. By choosing one trusted manufacturer, we can confidently stand behind every installation, ensuring our customers receive a premium skylight system backed by industry-leading warranties, proven performance, and expert installation.
How a Skylight Flashing System Works
A properly installed skylight relies on several layers working together to keep water out. The skylight flashing, waterproof membrane, roofing shingles, and surrounding roof system must be correctly integrated so rain and melting snow are directed safely around the skylight and down the roof.
Manufacturer Flashing System
The manufacturer-designed flashing fits around the skylight and creates the primary drainage system, directing water away from the skylight opening and onto the roof surface.
Ice & Water Shield Protection
A high-temperature waterproof membrane, such as SOPREMA LASTOBOND SHIELD HT, is installed around the skylight opening to provide an additional layer of protection beneath the flashing and shingles.
Shingle & Flashing Integration
The roofing shingles are carefully integrated with the flashing system so water flows naturally over each layer instead of reaching the roof deck or skylight opening.
Complete Water-Shedding System
When the membrane, flashing, shingles, and skylight are installed correctly together, they create a layered system designed to protect one of the roof’s most vulnerable areas from water infiltration.
Flat Roof
Flat Roof Skylight Repair & Replacement
Flat roof skylights require specialized waterproofing because water drains differently than it does on a sloped roof. Our flat roof skylight repair and replacement services address common problems such as leaks, deteriorated flashing, failed seals, damaged membranes, aging skylights, and improper installations.
We work with skylights installed on EPDM, TPO, and SBS modified-bitumen flat roofing systems. Depending on the condition of the skylight and surrounding roof, repairs may involve resealing, flashing corrections, membrane repairs, or improvements around the skylight curb. When replacement is the better solution, the new skylight is carefully integrated with the existing flat roof system.
Proper curb height, membrane detailing, drainage, and waterproofing are critical to creating a durable, watertight flat roof skylight installation.
The Process
Skylight Repair & Replacement Process
Every skylight project starts with understanding the existing skylight, surrounding roofing system, flashing, and waterproofing. Depending on what we find, the skylight may be repaired and resealed, or removed and replaced with a new unit. Our process focuses on properly integrating the skylight with the roofing system so the glass, frame, flashing, waterproofing, and surrounding roof work together.
Inspect the Existing Skylight
We assess the skylight glass, frame, seals, flashing, surrounding roofing materials, and visible waterproofing to determine the condition of the existing installation.
Identify the Problem
We look for potential water-entry points, deteriorated seals, damaged flashing, roofing deficiencies, failed glass, frame deterioration, or other conditions affecting the skylight.
Determine Repair or Replacement
If the skylight remains serviceable and the problem is localized, repair may be appropriate. Aging, damaged, failed, or repeatedly leaking skylights may be better suited for replacement.
Prepare the Skylight & Roofing Area
The work area is prepared and surrounding roofing materials are carefully removed or opened where required to access the skylight, flashing, and waterproofing components.
Install Waterproofing
Where required, waterproofing membrane is installed and integrated around the skylight opening to provide an additional layer of protection beneath the flashing and roofing system.
Install & Integrate the Flashing
The appropriate flashing system is installed or corrected and carefully integrated with the surrounding roofing materials to help direct water away from the skylight.
Final Detailing & Inspection
The skylight, glass, frame, flashing, roofing transitions, and completed work area are inspected to confirm that the approved repair or replacement scope has been completed.
Completed Skylight
The finished skylight is fully integrated with the surrounding roofing system, leaving a clean installation designed to provide reliable weather protection and natural light.
Reviews
What Customers Say About Our Skylight Services
See what homeowners say about their experience with our skylight repair, leak diagnosis, and skylight replacement services.
Trusted by homeowners across GTA for professional skylight repair & replacement services.
- Over 127+ 5-star reviews
- Fully Licensed & Insured
- Fast Response Times
- Quality Workmanship Guaranteed
Pricing
Skylight Repair & Replacement Costs
Skylight repair and replacement costs depend on the skylight, roof type, flashing condition, accessibility, and extent of the problem. A proper inspection helps determine the right solution and accurate cost.
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Skylight Repair
$699 $699 + hst
Quick & temporary skylight repairs on one-story homes
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First Step
Skylight Leak DIagnosis
$79 $79 +hst
Thorough skylight leak diagnosis for up to two-story homes
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Skylight Replacement
$2990 $2990 + hst
Complete skylight replacement starting at this price
Frequently Asked Questions
Get clear answers to common questions about skylight repairs, leaks, replacement, costs, flashing, installation, and when it’s time to replace your skylight.
A leaking skylight can often be repaired if the skylight itself is still in good condition and the problem is caused by damaged flashing, failed seals, or surrounding roofing materials. Replacement may be recommended when the skylight is old, damaged, or has failed components that cannot be reliably repaired.
Skylight repair costs depend on the source of the leak, roof type, accessibility, flashing condition, skylight design, and extent of surrounding roof damage. A skylight diagnosis should be completed first to determine the cause of the problem and the appropriate repair
Skylight replacement costs vary depending on the skylight size and model, roof type and pitch, accessibility, flashing system, interior finishing requirements, and whether surrounding roofing materials need to be replaced. An inspection can determine the complete scope before replacement begins.
A skylight may leak during rain because of damaged or improperly installed flashing, deteriorated roofing materials, failed seals, blocked drainage paths, or problems around the skylight opening. The visible location of an interior drip does not always identify where water is entering the roof.
Yes, in some cases skylight flashing can be repaired or replaced while keeping the existing skylight. This depends on the condition, age, and design of the skylight and whether a compatible flashing system can be properly integrated with the existing roof.
Common signs include recurring leaks, cracked or damaged glass, condensation between glass panes, deteriorated seals, damaged frames, repeated flashing problems, or an older skylight approaching the end of its service life. An inspection can determine whether repair or replacement makes more sense.
Many quality skylights can last approximately 20 years or longer when properly installed and maintained, although lifespan varies by product, installation, roof conditions, and exposure to weather. Older skylights should also be evaluated when the surrounding roof is being replaced.
It is often worth considering, especially if the skylights are older. Replacing an aging skylight during a roof replacement allows the new skylight, waterproofing membrane, flashing system, and roofing materials to be integrated together rather than disturbing a new roof later.
No. Condensation can form when warm, humid indoor air contacts a cold skylight surface and does not necessarily mean water is entering through the roof. However, staining, dripping, or moisture around a skylight should be inspected because condensation, roofing leaks, flashing problems, and ventilation issues can appear similar.
A skylight repair diagnosis evaluates the skylight, flashing system, surrounding roofing materials, seals, visible water-entry points, and other conditions that may be contributing to the problem. The goal is to identify the likely source of the issue and determine whether a permanent repair or skylight replacement is the appropriate solution.