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Professional Chimney Repair and Brick Restoration

Safe, weather-proof chimney repairs for homes across Stoney Creek, Hamilton, and nearby neighborhoods.

A chimney is the vertical brick or block structure that vents smoke and heat out of your home. It is exposed to rain, wind, and freezing temperatures every day. Over time, the concrete cap cracks, mortar joints open up, and bricks start to flake. This means that water gets inside the chimney wall and leaks into your ceiling or attic. GTA Masonry is a local team of licensed masons that fixes these problems. We repair brick stacks, seal crowns, and replace broken flue liners. We work in Stoney Creek, Old Town, Stoney Creek Mountain, Winona, and Fruitland. Our goal is to make your chimney safe before winter starts.

Four Reasons to Call Our Team First

Chimney work happens on a rooftop. It requires the right tools, safety gear, and masonry knowledge. Here is what sets GTA Masonry apart from a general handyman.

We Know How Local Weather Damages Chimneys

Winds off Lake Ontario carry moisture directly into porous chimney bricks. In winter, that moisture freezes and expands inside the brick. Next, this breaks the brick face apart, a process called spalling. We choose materials that hold up to this freeze-thaw damage.

We Use the Right Mortar for Your Home

Older chimney stacks in Old Town Stoney Creek were built with soft clay bricks. These need a flexible lime mortar to stay intact. Using hard cement mortar on them would cause the bricks to crack. We test your existing mortar first and mix a fresh batch to match.

We Keep Your Roof and Garden Safe

Before we touch a single brick, we lay protective tarps over your shingles and garden beds. Also, we use dust-controlled grinders to keep masonry dust from spreading. Your property stays clean from start to finish.

We Sort Out Permit Paperwork for You

Rebuilding a full chimney stack requires approval from the City of Hamilton. GTA Masonry submits all the paperwork, handles the required inspections, and keeps the project within local building codes.

Chimney and Fireplace Repairs We Do

Every chimney problem is different. GTA Masonry handles all of them. Below are the core services we provide to homes in Stoney Creek and across Hamilton.

Chimney Crown Rebuilding and Crack Sealing

The chimney crown is the thick concrete slab that covers the top of the brick stack. It protects the inner brickwork from rain. When the crown cracks, water runs straight down the chimney flue. We seal small cracks with flexible mortar or pour a fully new concrete crown with a sloped drip edge.

Tuckpointing and Brick Joint Repair

Old mortar joints between chimney bricks crumble over years of sun, rain, and frost. We grind the old material out to a clean half-inch depth and press fresh, color-matched mortar into each joint. This stops rainwater from getting into the brick wall cavity.

Damaged Brick Replacement

When face bricks or soldier course units crack or flake off the stack, they leave the inner chimney core exposed. We chisel out the failed bricks and set matching clay bricks or reclaimed bricks using the proper mortar mix. Next, this closes the gap and restores the wall strength.

Flue Tile and Liner Repair

A cracked clay flue tile inside the chimney allows combustion gases to escape into your attic or walls. This is a carbon monoxide risk. We inspect the liner from the top of the chimney and replace damaged tiles with new sections that seal the vent path.

Chimney Cap and Roof Flashing Replacement

A chimney cap covers the open flue hole at the top of the stack. It keeps rain, snow, birds, and animals out. Also, roof flashing is the metal strip that seals the joint between the chimney and the shingles. We install new stainless steel caps and lead-free metal flashing to block water at both of these entry points.

Firebox and Hearth Brick Repair

The inside of a fireplace gets very hot. Over time, this heat breaks down the firebrick lining and cracks the refractory mortar joints. We replace failed firebricks and reseal the firebox with fresh refractory mortar so your wood fire burns safely.

Chimney Base Parging

Some chimneys sit on a concrete block base at the roofline. If the block joints open up, rain soaks through. We apply a smooth parging coat over the concrete block surface to seal it. Next, this protects the block from ground-level moisture and gives the chimney a clean, finished look.

Decorative Stone Veneer on Chimneys

If your chimney looks worn or outdated, we can give it a new look. We attach lightweight thin stone veneer panels directly over the brick or block surface using polymer-modified mortar. Also, we finish the grout joints with a color-matched material so the stone facade looks like solid masonry.

Chimney Waterproofing Treatment

After repairs are complete, we apply a clear, breathable siloxane coating to the full brick chimney stack. This coating blocks liquid water from soaking in but lets vapor escape from inside the wall cavity. This extends the life of your mortar work and stops future spalling.

How We Repair Chimneys: Step by Step

Every chimney job starts from the ground and ends with a clean roof. Here is exactly what we do on your property from day one.

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Step 1: Roof Access and Safety Setup

We set up a secure ladder, anchor points, and a scaffold platform around the chimney base on the roof. We also lay out protective tarp sheets over the shingles before we bring any tools or equipment up.

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Step 2: Full Chimney Assessment

We inspect the chimney crown, cap, flashing joints, mortar joints, and the full brick facade from top to bottom. We take photos of every damaged section so you can see exactly what needs to be done.

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Step 3: Mortar Sampling and Matching

We scrape out a small piece of your existing mortar and measure its sand grade, strength type, and color pigment. Next, we prepare a fresh batch of mortar that matches as closely as possible.

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Step 4: Grinding and Brick Removal

We grind out all failed mortar joints with dust-controlled tools. We chisel out any cracked or spalled bricks without damaging the surrounding units. Also, we clean the open joints and surfaces thoroughly before packing anything in.

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Step 5: Brick Setting and Joint Packing

We set matching bricks using the right mortar type for your wall. We pack fresh mortar into every open joint in layers to prevent air gaps. Next, we tool the joints to match the original profile of your chimney.

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Step 6: Crown Forming and Pouring

We set a timber form around the top of the chimney and pour a fresh concrete chimney crown wash with a sloped surface and a drip edge overhang. This sheds water over the edge of the brick face.

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Step 7: Waterproofing and Cleanup

Once all mortar has cured, we apply a breathable siloxane sealer to the entire chimney. Then we sweep the roof, pack up the scaffold, and clear the garden of any debris. We do a final walkthrough with you before we leave.

Questions Homeowners Ask About Chimney Repairs

A chimney crown is the wide concrete slab that covers the top of the entire brick stack. It seals the joint between the bricks and the flue liner. A chimney cap is the smaller metal lid that sits directly over the open flue hole to block birds and rain. Both parts protect the chimney from water, but they serve different roles.

You may notice a smoky smell in rooms near the chimney even when the fireplace is not in use. Also, if your smoke detector goes off without a visible fire, exhaust gases may be leaking through a cracked flue liner. A camera inspection of the chimney interior will confirm the damage.

No. A cracked firebox lining or failed flue tile allows hot gases and carbon monoxide to escape into your living space. This is a serious fire and health risk. Stop using the fireplace and call us for an inspection before lighting another fire.

Chimneys are exposed to weather on all four sides with no shelter from the roofline. Rain, frost, heat from the flue, and wind all act on the mortar at the same time. A sheltered exterior wall may last 40 years before needing repointing. A chimney may need attention every 10 to 15 years depending on exposure.

Small repairs like tuckpointing or replacing a few bricks do not need a permit. However, if the chimney stack must be rebuilt from the roofline up, the City of Hamilton requires a structural permit and a site inspection. GTA Masonry handles both for you.

This usually means the metal roof flashing where the chimney meets the shingles has separated or rusted through. When it rains, water runs under the loose flashing and down the inside of the chimney wall into your ceiling. We replace old flashing with new sealed sections to stop this leak.

Yes. We can attach lightweight thin stone veneer panels directly over your existing brick stack. The process does not require removing the old bricks. We bond each panel with polymer-modified mortar and finish the joints to look like natural stone.

A quality repointing job on a chimney lasts around 20 to 30 years. Chimneys that face heavy wind exposure or are directly above the Lake Ontario shoreline may need attention sooner. Applying a breathable siloxane sealer after the repair helps the mortar hold up longer between maintenance visits.

Get Your Chimney Fixed Before Winter

A cracked crown or loose brick can become a serious water leak inside your home once heavy rain starts. Do not leave it until spring. Call GTA Masonry now to book your free inspection.

GTA Masonry
138 MacIntosh Dr, Stoney Creek, Hamilton, ON, L8E 4E3
Phone: (289) 272-5442 | Email: info@gtamasonry.ca