Skylight Replacement in Thornhill, ON – Pinewood Ave Project

By The Roof Whisperer | July 23, 2025

A Leak-Free Skylight Replacement Success Story

At The Roof Whisperer, we recently completed a full skylight replacement in Thornhill on Pinewood Ave. This project solved a long-standing leak, replaced an aging skylight, and provided the homeowners with a durable, energy-efficient solution. From inspection to final installation, our certified skylight specialists followed a careful step-by-step process using Velux skylights and premium roofing materials.

Step 1: Identifying the Source of the Leak

The homeowners noticed water stains forming around the ceiling beneath the skylight, especially after heavy rainfalls. Our team performed a free skylight leak assessment, which revealed poor workmanship around the original flashing and failing weather seals. These are common issues in skylights over 20 years old and often lead to leaks if not addressed promptly.

Step 2: Careful Skylight Removal

Because of its age and damage, replacing the skylight was the best solution. We carefully removed the old unit, surrounding shingles, and deteriorated flashing. Our skylight repair services in Thornhill ensure removals are done without further damage to the roof deck or curb.

Step 3: Installing a New Velux Skylight

We installed a Velux curb-mounted skylight, known for its leak-proof design, energy efficiency, and natural light benefits. Velux, a trusted brand with 75+ years of expertise, remains our go-to partner for high-quality skylight products. For more about our installation methods, explore our skylight installation services.

Step 4: Waterproofing with SBS Roofing Membrane

To provide long-term protection, we applied a premium SBS two-ply roofing membrane around the skylight. This barrier prevents water infiltration, even during Thornhill’s heaviest storms. Our team tucked the membrane under the shingles and over the underlayment, ensuring a watertight seal that lasts.

Step 5: Velux Flashing System

Flashing errors are the top cause of skylight leaks. We installed a Velux flashing kit with step flashing pieces designed to direct water safely away from the skylight. Proper integration of the flashing with the roofing system guarantees lasting leak protection.

Step 6: Blending Shingles for a Seamless Look

Since the home’s shingles had been discontinued, we sourced the closest available match. This detail-oriented approach maintained the curb appeal while keeping the roof watertight. Matching shingles shows why homeowners trust The Roof Whisperer for precise, high-quality work.

Step 7: Vent and Pipe Stack Replacement

Our inspection also revealed outdated bathroom vents and a pipe stack prone to leaks. To eliminate all risks, we replaced them with modern, durable components. Proper ventilation upgrades not only stop leaks but also reduce condensation problems.

Why Choose The Roof Whisperer?

This project highlights our reputation as Thornhill’s trusted skylight replacement experts. With certified Velux installers, high-quality materials, and an Ironclad Workmanship Warranty, we deliver results that last for decades. Whether you need a skylight repair or a full replacement, we ensure durability, efficiency, and peace of mind.

Contact Us Today

If you’re facing a leaky skylight in Thornhill, call The Roof Whisperer at 844-878-1360 or request a free skylight assessment on our contact page. Let our specialists bring natural light back into your home with a leak-free solution.

Explore more of our projects at theroofwhisperer.ca.