Northmark Chimney
Guides

Chimney Guides: Straight Answers For Toronto Homeowners

What a sweep should cost, what a WETT inspection involves, how to read a water stain near the chimney. No sales pitch — the free inspection is at the end if you want it.

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Written the way we explain things on a job: what it is, what it costs, what to do about it.

Wood-burning fireplace lit after a chimney sweep in a Toronto home
Guide · Pricing

How Much Does Chimney Cleaning Cost In Toronto?

What a chimney sweep costs in Toronto, what changes the price, what should be included, and when a cleaning is not enough. Northmark's winter sweep is $200.

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Brick chimney above the roofline, photographed during a Northmark inspection in Toronto
Guide · Inspections

WETT Inspection In Ontario: What It Is, Who Needs One, What To Expect

What a WETT inspection is, when your insurer or a home purchase requires one, the three inspection levels, and what happens if the chimney fails.

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New metal flashing sealed where a brick chimney meets the shingle roof
Guide · Leaks & water

7 Signs Your Chimney Is Leaking — And What Each One Means

Water stains near the fireplace, a damp firebox, white staining on the brick, a musty smell after rain: what each sign means and what fixes it.

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New stainless steel chimney cap with mesh screen fitted on a brick chimney in Toronto
Guide · Caps

Do You Need A Chimney Cap? What It Does, And What Happens Without One

What a chimney cap does, what goes wrong without one, galvanized vs stainless, and how a cap is sized and fitted. From a WETT-certified technician in Toronto.

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Looking down a chimney flue from the top, inside a Toronto chimney
Guide · Liners

Do You Need A Chimney Liner? How To Tell, And What The Options Are

What a chimney liner does, how to tell if yours is cracked or missing, clay vs stainless, and why a new liner fixes many old Toronto chimneys.

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Fire burning cleanly in a swept wood-burning fireplace
Guide · Draft problems

Smoke Coming Into The Room? 8 Reasons A Fireplace Smokes, And What Fixes Each

Why a fireplace smokes into the room: closed damper, cold flue, blocked chimney, wrong flue size, airtight house. What fixes each, from a Toronto technician.

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Rebuilt brick chimney above the roofline of a Toronto home, with a new cap
Guide · Home buyers

Buying A House With A Fireplace In Toronto: The Chimney Checklist

What to check before buying a Toronto home with a wood-burning fireplace: chimney, liner, flashing, WETT report, and what repairs would cost you.

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Brick chimney repaired above the roofline in Toronto, with a new crown and cap
Guide · Pricing

Chimney Repair Cost In Toronto: What Drives The Price, Repair By Repair

What chimney repairs cost in Toronto and why: crown, cap, flashing, repointing, brick, liner, rebuild. How to read a quote. Free inspection, price in writing.

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Inside of a fireplace and flue before a chimney sweep, with soot and creosote on the walls
Guide · Safety

Creosote: What It Is, The Three Stages, And When It Becomes Dangerous

What creosote is, the three stages from soot to glaze, why it causes chimney fires, how to tell how much you have, and how to burn so it builds up slowly.

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New concrete crown and stainless steel cap on a restored stone chimney
Guide · Repairs

Chimney Crown Repair: When A Crack Can Be Sealed, And When The Crown Has To Go

What the chimney crown does, why it cracks, when a crack can be sealed and when the crown has to be rebuilt, and what a good crown looks like when done right.

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