Cedar Shingle Repair: Fixing a Leak Above a Door Frame

Introduction: Solving a Cedar Siding Leak

A homeowner contacted The Roof Whisperer Toronto after noticing water leaking above their door frame. This issue is common in homes with cedar siding, especially when shingles wear down or are poorly installed. If ignored, leaks can cause serious water damage, mold, and even structural issues.

In this post, we explain how we identified the leak, repaired the damage, and provided long-term protection using proper waterproofing techniques and high-quality cedar shingles.

Step 1: Identifying the Source of the Leak

We began with a full inspection to locate the exact cause. Common reasons for cedar siding leaks include:

• Deteriorated Cedar Shingles – Shingles crack, curl, or rot over time, allowing water to enter.

• Missing or Faulty Flashing – Improper flashing around windows or doors leaves vulnerable entry points for water.

• Poor Waterproofing – Without a membrane, water seeps into gaps and damages framing.

• Incorrect Installation – Improper overlap or spacing lets moisture penetrate.

In this case, the leak came from deteriorated shingles and insufficient waterproofing above the door frame and around an octagonal window.

Step 2: Removing the Damaged Shingles

Next, we carefully removed the affected shingles to avoid damaging the siding around them. We also inspected behind the wood for hidden moisture. Thankfully, the structure was sound, so no major rebuild was needed.

Step 3: Installing Waterproofing and Flashing

To prevent future leaks, we added strong layers of protection:

• Waterproofing Membrane – Installed across the exposed area for a moisture barrier.

• Custom Flashing – Fabricated and fitted around the window and door frame to direct water away.

These steps greatly reduce the risk of future water penetration.

Step 4: Installing New Cedar Shingles

With waterproofing in place, we installed new cedar shingles. Each piece was spaced, overlapped, and secured correctly for a watertight finish. Beyond protection, the new shingles restored the natural, timeless look of the home’s gable.

Final Outcome: Leak-Free Cedar Siding

After testing, the leak was completely resolved. The homeowner gained:

• A leak-free door frame and siding

• Proper waterproofing and flashing for long-term protection

• Improved curb appeal with new cedar shingles

The client was thrilled, knowing their home was now secure and beautiful.

Why Choose The Roof Whisperer for Cedar Shingle Repair?

If you notice water leaks in cedar siding, act quickly to prevent costly structural damage. Our team provides expert cedar shingle repair in Toronto, including:

• Cedar shingle replacement and installation

• Flashing and waterproofing solutions

• Leak detection and prevention

• Exterior home restoration services

At The Roof Whisperer, we combine craftsmanship with care to deliver repairs that last.