St. Paul doesn’t have one kind of chimney — it has several, often just a few blocks apart. In Cathedral Hill and Summit Hill, we regularly work on original open masonry fireboxes, the kind built well over a century ago with a real flue running straight up through the house. Those fireboxes burn wood the old-fashioned way, which means they also build creosote the old-fashioned way — and Minnesota’s long, cold burning season, often October through April, gives that creosote a lot more time to accumulate than it would in a milder climate. Left unchecked, it thickens into the kind of glazed, hardened deposit that’s genuinely dangerous. Sweeping one of these chimneys properly means a full rotary or hand-brush pass through the flue, smoke chamber, and firebox, not just a quick once-over near the damper.
Head over to Highland Bridge and the picture changes. Many of the newer builds there run gas fireplace inserts instead of open wood-burning fireboxes. Gas doesn’t produce creosote the way wood does, so the buildup pattern is completely different — the concern shifts to soot on the glass, dust and debris in the venting, and making sure the burner assembly and vent path are clear. We still recommend an annual visual check even for gas units, but the sweep itself looks nothing like what we do on a Cathedral Hill masonry flue.
Because Cathedral Hill and Summit Hill homes tend to be older and see more wood-burning use across a long winter, we generally recommend sweeping those fireplaces once a year, before the season’s first real fire — sooner if the household burns often or uses unseasoned wood. Highland Bridge’s gas-insert households can typically stretch that interval, but we still flag it for review at least annually. Being based right here in St. Paul means we’re not driving in from another suburb to get to either neighborhood, which is a big part of why we can usually offer same-week, and often next-day, sweep appointments across the city.
What's Included
- Full flue, smoke chamber & firebox cleaning — brush-and-vacuum equipment sized to your flue, whether it’s an original Cathedral Hill masonry chimney or a newer build.
- HEPA-contained dust control — negative-air containment and drop cloths keep soot out of your living space while we work.
- Visual check during the sweep — we flag anything that looks off, from cracked liner tile to a loose gas insert connection.
- Same-week scheduling — being based in St. Paul means shorter drive times and more open slots than we can offer farther out in the Twin Cities.
FAQs
Since our shop is based right here in St. Paul, we’re often able to offer same-week and sometimes next-day appointments for sweeping, especially compared to the surrounding suburbs we also drive out to.
Yes. An open masonry firebox, common in older Cathedral Hill and Summit Avenue homes, needs a full brush-and-vacuum of the flue and smoke chamber where creosote builds up over a long Minnesota burning season. Gas inserts in newer Highland Bridge homes don’t produce creosote the same way, but the venting and glass still need periodic cleaning and a visual check.