Chimney Mortar & Flashing Repair in Toronto

Our team was called to a Toronto home experiencing ongoing moisture issues near the chimney and in the attic. After a full roof and attic inspection, we confirmed two major concerns: deteriorated chimney mortar and flashing allowing water to enter, and poor ventilation contributing to trapped moisture inside the attic.

What We Did

To restore the roof system and eliminate the leak at its source, our technicians completed several key repairs:

✔ Chimney mortar repair

The existing mortar around the chimney was cracked, allowing water to seep behind the bricks. We removed the deteriorated mortar and installed fresh, durable mortar to ensure a strong and watertight seal.

✔ Chimney flashing replacement

Old flashing around the chimney base was failing. We removed the damaged metal, inspected the surrounding shingles, and installed new properly-sealed flashing to prevent future water intrusion.

✔ New roof vent opening

To improve attic air circulation, we cut a new vent opening in the roof deck and ensured the vent aligned correctly with the attic space. This helps reduce condensation, moisture buildup, and heat retention.

✔ Proper connection to the OD pipe

We connected the new vent to the existing OD pipe, ensuring a safe and efficient exhaust path.

Inspection Findings

Inside the attic, we observed moisture staining and darkened wood, confirming long-term humidity and lack of proper ventilation. The updated venting system will help prevent these issues from returning.

Project Outcome

By repairing the chimney mortar, installing new flashing, and improving the ventilation system, we eliminated the leak source and created a healthier, longer-lasting roof structure. The homeowner now has peace of mind knowing their roof is protected through proper workmanship and upgraded components.

If you’re dealing with leaks around your chimney or notice dampness in your attic, our skilled technicians are ready to help. Contact The Roof Whisperer for reliable chimney and roofing repairs done right the first time.