Skylight & Sun Tunnel Installation in Hamilton, Ontario
As VELUX Certified installers, Bosani Roofing protects your full skylight warranty and installs flashing systems that stay watertight through Ontario freeze-thaw cycles.
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Quick answer: Skylight installation in Hamilton costs $1,800–$3,500 for a fixed VELUX unit including professional installation and flashing. Venting skylights run $2,500–$5,500. Sun tunnels start at $900–$1,800 installed. VELUX manufacturer warranties (10 years on glass, 20 years on frame) are only valid when installed by a VELUX Certified installer — which Bosani Roofing is.
Our Work in Hamilton
Three Signs You Need Skylight & Sun Tunnels
🌑 A dark room with no window option
Sun tunnels redirect daylight through a reflective tube from roof to ceiling — ideal for hallways, bathrooms, or closets where a full skylight isn't possible.
💧 Your existing skylight is leaking
Most skylight leaks are flashing failures, not defective units. A VELUX Certified installer can often resolve the leak without replacing the unit.
☀️ You want natural light in a kitchen
Properly positioned VELUX skylights add 30% more light per square foot than a vertical window of the same size.
When You Need It
⚡ Condensation between panes
Seal failure in double-paned glass isn't repairable — the unit needs replacement. As VELUX Certified installers we can often match the replacement to your existing frame.
⚡ Brown staining around the skylight curb
Staining at the interior curb is almost always a flashing failure, not a defective unit — a priority repair before the next Ontario winter.
⚡ Home renovation with new roof area
Adding a skylight during a re-roof is significantly cheaper than cutting into a finished roof later.
⚠️ What Happens If You Wait?
A leaking skylight flashing left through an Ontario winter allows water into roof deck, insulation, and drywall simultaneously. Drywall and insulation replacement adds $800–$2,500. Attic mold from a leaking skylight area typically costs $3,000–$8,000 to remediate. A $300 flashing repair prevents all of it.
6 Steps From Call to Complete
What to expect every time Bosani Roofing shows up at your home.
Inspection & Position Planning
We assess roof structure, rafter spacing, and optimal position for light penetration and drainage.
VELUX Unit Selection
Fixed, venting, electric, or solar-powered — selected based on your goals. Sun tunnel routing planned for maximum daylight transfer.
Roof Opening
Opening cut to manufacturer specifications. Existing shingles removed cleanly for reinstallation.
VELUX Flashing Installation
VELUX-specified integrated flashing system installed — the step that separates a VELUX Certified installation from a generic one.
Skylight Setting & Sealing
Unit set and sealed to flashing per VELUX requirements to protect warranty.
Interior Finishing
Drywall, painting, trim as agreed. Electrical for powered units arranged if required.
"Bosani installed two VELUX skylights in our living room. The natural light difference is incredible. They handled the roof opening, flashing, and interior drywall. VELUX warranty documentation was in my hands that afternoon."
"Sun tunnel in our main bathroom — a room that had one tiny window. The light it brings in is genuinely remarkable. Half-day install, zero mess. Bosani was professional start to finish."
Frequently Asked Questions
Honest answers about Skylight & Sun Tunnels in Hamilton, Ontario.