Staircase Inspection — Safety, Code, and Common Deficiencies

Walked into this gorgeous 1940s brick home on King Street West last Thursday and immediately smelled something off in the living room. The homeowner had been burning fires all winter, proud of their "original working fireplace," but when I knelt down and peered up that chimney with my flashlight, I could see daylight through cracks in the mortar joints. The damper was completely rusted through, hanging by one hinge like a broken jaw.

You know what I told that buyer? Walk away or budget fifteen grand for a complete chimney rebuild.

I've been inspecting Hamilton homes for fifteen years, and I'd say about sixty percent of the fireplaces I encounter in these older homes are disasters waiting to happen. Buyers see that charming brick surround and original mantle and they're already picturing cozy winter nights. What they don't see is the seventy-year-old clay liner that's been expanding and contracting through decades of Ontario freeze-thaw cycles.

Here's what I find most concerning about fireplace inspections in our Hamilton housing stock. These homes from the 1900s through 1960s were built when heating oil was cheap and fireplaces were secondary heat sources. The masonry work was solid, but the chimney systems weren't designed for the kind of continuous use modern homeowners want.

Last month I inspected a 1950s home in Westdale where the family had been burning fires every weekend for three years. Beautiful neighbourhood, asking $695,000, seemed like a solid buy. I climbed up on that roof and dropped my inspection camera down the flue. The mortar joints were completely deteriorated, and there was a bird's nest blocking about half the opening twenty feet down. The buyers had no idea they were one spark away from a house fire.

The technical stuff matters here, and I always explain this to my clients because most people don't understand how these systems actually work. Your fireplace needs three things to operate safely: proper draft, intact flue liner, and a functioning damper. In Hamilton's older homes, I'm finding problems with all three on almost every inspection.

Draft issues usually come from chimney height problems or obstructions. Ontario building codes from the 1940s and 1950s didn't require the same clearances we need today, so you'll find chimneys that are too short relative to the roofline or nearby trees. Poor draft means smoke and carbon monoxide backing up into your living space instead of going up and out.

The flue liner situation is where I see the biggest problems. Clay tile liners from this era crack, separate, and sometimes collapse entirely. I was in a 1935 home on Barton Street last spring where the liner had collapsed so badly that debris was piling up on the smoke shelf. The homeowner thought the fireplace was "just smoking a little more than usual." That repair estimate came back at $12,850.

Here's something that surprised even me after all these years. I was inspecting a 1960s split-level in Dundas last fall, and the fireplace looked perfect from inside the house. Fresh mortar around the firebox, clean glass doors, the works. But when I got up on that roof, the chimney crown was completely separated from the flue tiles, creating a direct water entry point. April 2026 spring rains are going to destroy that house from the inside out, and the owners had no clue.

Dampers fail constantly in these older systems. The metal wasn't designed to last sixty-plus years, and Hamilton's humidity doesn't help. A seized damper means you can't control airflow, which affects both fire performance and energy efficiency when the fireplace isn't in use. Replacement runs about $800 to $1,400 depending on access.

What buyers always underestimate is the cost of bringing an old fireplace up to current safety standards. They think maybe they need a cleaning and inspection, budget five hundred bucks, call it done. In reality, most of the 1940s and 1950s systems I encounter need significant work before they're safe to use.

I always recommend a Level 2 chimney inspection before closing on any Hamilton home with a fireplace. This involves camera inspection of the entire flue system, not just peering up from below with a flashlight. Costs around $350, but it'll identify problems that could cost you thousands later.

The worst case I've seen was a 1920s home on Locke Street. Gorgeous property, asking $710,000, and the fireplace was the selling feature for these buyers. Turned out the entire chimney was pulling away from the house, mortar joints failing throughout, and the flue liner was so deteriorated it was basically a pile of clay shards. Total reconstruction estimate: $18,600.

Carbon monoxide is the invisible killer here, and older fireplace systems with damaged flues or poor draft can pump deadly gas right into your living space. I carry a CO detector on every inspection because I've walked into homes where levels were already dangerous and nobody knew.

Insurance companies in Ontario are getting pickier about fireplace coverage too. Some won't cover fire damage if you haven't had a recent professional inspection, especially in homes over fifty years old.

You're looking at Hamilton homes built when craftsmanship was better but building science was simpler. Get that fireplace properly inspected before you close, and budget for repairs even if everything looks fine from your living room.