Stop Heat Loss with This Chimney Repair Hack

chimney-bricks

A poorly maintained chimney can be a major source of heat loss, driving up energy costs during those long Canadian winters. Moisture can damage chimney bricks and cold drafts can come in. Fortunately, a professional solution can save you hundreds of dollars annually.

The Hidden Energy Drain in Your Home

Many Toronto homes feature charming fireplaces that add character and warmth. However, when chimneys fall into disrepair and chimney bricks crack, they become energy vampires. Small cracks, damaged flashing, and worn mortar joints create pathways for your expensive heated air to escape. Even worse, these openings allow cold winter air to flow freely into your home.

The Professional Solution

The good news? A chimney repair professional can solve your chimney problems easily. 

Step 1: Inspect your chimney Before making any repairs, carefully examine your chimney for signs of damage. A professional inspector will look for:

  • Cracked or missing bricks
  • Damaged flashing (the metal pieces where the chimney meets the roof)
  • Deteriorating mortar joints
  • A damaged or missing chimney cap

Step 2: What the Professionals Use

  • High-temperature silicone caulk
  • Chimney crown sealer
  • Wire brush
  • Chimney cap (if missing)
  • Ladder (use with proper safety precautions)
  • Work gloves
  • Safety glasses

Step 3: Seal the leaks The chimney repair expert will begin by cleaning the areas needing repair with a wire brush. They apply high-temperature silicone caulk to seal small cracks in the mortar joints. They apply a specialized chimney crown sealer according to the manufacturer’s instructions for the flat surface on top of your chimney (the crown).

Step 4: Install or replace the chimney cap If your chimney cap is damaged or missing, have professionals install a new one. This prevents heat loss and keeps out animals and precipitation that can cause further damage.

Why This Hack Works So Well

This repair technique works by addressing the most common causes of chimney-related heat loss:

  1. It seals thermal bridges. Cracks and gaps in your chimney create direct pathways for heat transfer. Sealing these openings interrupts this process.
  2. It prevents the “chimney effect.” A damaged chimney creates a natural draft that pulls warm air up and out of your home. Proper sealing stops this airflow.
  3. It restores the thermal barrier. Your home’s insulation system is only as strong as its weakest point. Repairing your chimney restores this critical thermal boundary.

The Toronto Climate Factor

Toronto’s climate makes chimney maintenance particularly important. The freeze-thaw cycles that occur throughout winter can worsen existing damage. Small cracks fill with water, which expands when frozen, making the cracks larger with each cycle.

More Than Just Saving Money

Beyond the financial benefits, a properly sealed chimney offers other advantages:

  • Improved home comfort without cold drafts
  • Reduced risk of water damage to your home’s interior
  • Prevention of animal intrusions
  • Extended lifespan of your chimney structure

When to Call a Professional Right Away

  • Severely damaged or leaning chimneys
  • Extensive brick replacement needs
  • Signs of structural issues
  • Chimney fires or other major damage

Safety should always come first. And out team at Cummins Restoration can help you save money and keep your chimney safe and secure for your family.

Getting Started

The best time to tackle this project is during fall, before the heating season begins. This gives sealing products time to cure properly in mild weather. One weekend is usually enough to complete the work for most homes.

By investing a little time now, Toronto homeowners can enjoy a warmer home, lower energy bills, and peace of mind knowing their chimney isn’t letting money escape into the cold winter air.

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    Holly Bowman XO
    Holly Bowman XO
    Brian and the Cummins Restoration team did an incredible job tuckpointing the house. Brian fully understood what was needed and wanted and not only was he professional and efficient, but he was a pleasure to work with. I would recommend Cummins Restoration over and over again. Thanks Brian!
    Gina Donnelly
    Gina Donnelly
    Tuck pointing and threshold repair. Did a great job for a fair price compared to other companies. It's been a few months and you can barely tell where the mortar repair was done.
    M.B Toronto
    M.B Toronto
    You guys did a terrific job on the tuckpointing, I’d have no problem recommending you to anyone. The front of my house just looks so much better

    Contact us




      Holly Bowman XO
      Holly Bowman XO
      Brian and the Cummins Restoration team did an incredible job tuckpointing the house. Brian fully understood what was needed and wanted and not only was he professional and efficient, but he was a pleasure to work with. I would recommend Cummins Restoration over and over again. Thanks Brian!
      Gina Donnelly
      Gina Donnelly
      Tuck pointing and threshold repair. Did a great job for a fair price compared to other companies. It's been a few months and you can barely tell where the mortar repair was done.
      M.B Toronto
      M.B Toronto
      You guys did a terrific job on the tuckpointing, I’d have no problem recommending you to anyone. The front of my house just looks so much better