top of page

How to Install a Leak-Proof Skylight: The Curb-Mounted Guide for Ontario Homes

  • aoneroofing666
  • 2 days ago
  • 2 min read
Curb-mounted skylight installation diagram by A-ONE Roofing GTA。
Expert skylight installation by A-ONE Roofing: Understanding the core components of a leak-proof system.
Why a Curb-Mounted Skylight is the Best Choice for Ontario Homes

Adding a skylight is one of the most transformative home improvements you can make. It floods your space with natural light and makes even small rooms feel expansive. However, in the Greater Toronto Area, our roofs face extreme challenges—from heavy snow loads to spring downpours.

At A-ONE Roofing , we believe that a skylight should only bring in light, never water. That is why we specialize in the Curb-Mounted Installation method.


1. The Foundation: Why the "Curb" Matters

Unlike deck-mounted skylights that sit flush with the roof, a Curb-Mounted Skylight sits on a raised wooden frame (the Curb).

Snow Clearance: In Ontario, snow can sit on your roof for weeks. A raised curb ensures that as snow melts, the water level stays below the skylight seal.

Structural Integrity: We don't just cut a hole; we reinforce your roof. By installing Headers between the Rafters, we ensure your roof's structural load is safely redistributed.


Pro Tip: We always ensure the Curb is at least 6 inches high to meet local safety standards and provide maximum protection against "ice dams."


Expert skylight installation by A-ONE Roofing: Understanding the core components of a leak-proof system.


2. The Secret to a Leak-Proof Seal: Multi-Layer Flashing

If you’ve heard horror stories about leaking skylights, 90% of the time, the culprit is poor flashing. Our professional process uses a three-tier defense system:

Top Flashing: Tucked deep under the shingles to divert water around the top of the unit.

Step Flashing: This is the most critical part. We interweave L-shaped metal plates with every single layer of shingles on the sides. It creates a mechanical drainage path that gravity can't beat.

Bottom Flashing: Sits securely over the shingles to shed water back onto the roof surface.


3. Beyond the Glass: The Lightwell

A great skylight isn't just about what's on the roof; it's about the Lightwell—the tunnel that brings the light into your room.

Framing: We use 2x4 lumber to create a sturdy interior frame.

Insulation: This is where many contractors cut corners. We insulate the lightwell walls to prevent energy loss, keeping your home warm in the winter and cool in the summer.

Finish: Our team finishes the well with professional drywalling, ready for paint.


Why Choose A-ONE Roofing for Your Skylight Project?

Installing a skylight is a major "surgery" for your roof. You need a team that understands the Ontario Building Code and the physics of water shedding.

Our Promise:

• Precision-cut roof openings.

• High-performance flashing kits (Velux certified).

• Complete structural reinforcement.

Ready to brighten up your home? Contact A-ONE Roofing today for a Free Consultation!

Serving Toronto & Nearby Areas

Oakville.Toronto, North York, Scarborough, Etobicoke, Mississauga, Vaughan, Richmond Hill


Get a Free Roof Inspection Today

Protect your home with expert Toronto roof repair services.

👉 Call now for a free inspection: 647-261-8965👉 Same-day emergency roof repair available in Toronto

 
 
 

Comments


Free Inspections Available!
Call us now! 647-261-8965


A-ONE ROOFING is your trusted local roofing company serving all of Toronto and the GTA.
We provide expert roof replacement, repairs, gutter work, chimney service, and emergency response. Contact us today for a free inspection!
Copyright 2025 - All Right Reserved
bottom of page