Where we work

Soft-brick spalling made worse by the wrong repair. These 1890s–1910s houses were laid up in soft brick and lime mortar; when someone repoints them with modern hard Portland mortar, the mortar becomes stronger than the brick and the brick face blows out instead of the joint. We match the mortar to the masonry, which on Strawberry Hill usually means a lime-rich mix.

Multiple unlined flues sharing one stack. A 19th-century Leavenworth chimney often carries three or four separate flues, some abandoned, and the masonry partition between them — the withe — erodes over 150 years. Once it does, smoke from one fireplace crosses into another flue and comes out of a fireplace on a different floor. It presents as a draft complaint; it is actually a containment failure.

Crowns failing en masse. A mortar-wash crown — which is what most of these got originally rather than a proper poured cap with an overhang — has a service life of roughly fifty to seventy years in this climate. The whole city passed that mark at once, so cracked crowns letting water into the top of the flue is far and away the most common thing we find here.

Multi-flue stacks with mismatched ages of failure. On a wide four- or five-flue chimney the flues do not deteriorate at the same rate — the great room flue sees heavy seasonal use while the appliance flues run cool and condense. Homeowners get one flue swept, assume the stack is fine, and the problem is in a flue nobody looked at. These stacks also need a single fabricated lid rather than individual caps.

Galvanised chase covers rusting through. Builders used galvanised steel as standard on prefab chases through the 1980s and 1990s, and it corrodes from the underside first, where flue condensate collects — so it is failing long before anything shows from the ground. By the time you can see rust streaks running down the siding, water has usually been getting into the chase framing for at least a season.

Cracked refractory panels in factory-built fireboxes. Prefab units have moulded refractory panels rather than firebrick, and once a panel cracks wider than the thickness of a dime the manufacturer considers the unit unsafe to burn. This is the most common finding on an Olathe inspection, and it is the one homeowners are most surprised by — the fireplace looks perfectly fine.

Termination clearance and blocked direct vents. On a house this new the masonry is not the problem — the venting is. Direct-vent terminations get buried by later landscaping, blocked by a deck the owner added, snow-drifted, or nested in. A blocked termination on a sealed unit means the appliance either locks out or, worse, spills. Nothing about it is visible from indoors.

Chase flashing failure where the chase meets a complex roofline. Lenexa-era builders put a lot of gables, dormers and roof intersections around the chase, and every one of those is another place for water to get behind the flashing. On these houses the leak is far more often at the chase-to-roof junction than at the cover on top.

Wrong diagnosis from the ground. Because Shawnee has both systems side by side, the single most common problem is a homeowner told they need masonry repair on what is actually a framed chase with a brick veneer skirt — or the reverse. Brick on the outside does not mean masonry on the inside, and the repair is completely different.

Multi-flue stacks where one flue has been abandoned and left uncapped. Decommission a boiler flue and nobody caps it, so for decades rain enters a chimney nobody thinks about, saturating the shared masonry and pushing damage sideways into the flue still in use. The fireplace fails and the cause is a flue that has not been lit since the 1970s.

Original crowns failing as a cohort. A thin unreinforced crown cast flush with the brick lasts sixty to eighty years, and Fairway is now past that on nearly every house at once. Water enters through crown cracks, freezes in the top courses, and the damage looks like brick failure when it started at the concrete cap.

Short stacks that barely clear the roofline. A chimney terminating too close to the ridge draughts badly whenever wind comes across the roof, and in Merriam that is common enough to be the first thing worth measuring. Owners report smoke pushing back into the room and assume the flue is blocked when the stack is simply too short.

Thin single-wythe chimney walls above the roof. Built to the lightest specification of the post-war rush, these stacks have less masonry between the flue and the weather than anything built before or since, so seventy-five winters of freeze-thaw have worked through them from both sides at once.

Shared and common venting on multi-family buildings. Where several units vent into one structure, a fault in one appliance shows up as a problem in another unit entirely, and the owner who calls is often not the owner of the appliance causing it. Sorting out which flue serves what has to happen before anything is quoted.

Hard modern mortar used on soft pre-war brick. Repointing early-century brickwork with a modern high-cement mix makes the joints stronger than the brick itself, so the next freeze pushes the damage into the brick faces instead. In Westwood this shows up as spalling that started with a well-intentioned repair.

Two different failure modes on the same street. In the old town it is unlined or deteriorated flue tile; in the new subdivisions it is chase covers and flashing on chimneys under twenty-five years old. Diagnosing either one starts with establishing which De Soto the house belongs to.

Chase covers reaching end of life on their first cycle. A galvanised cover fitted in 2004 is twenty years old now, and they corrode from the underside where flue condensate sits. In a place this uniformly aged, the same fault arrives across whole streets within a few years of each other.

Separation at the stone-to-brick transition. Where a limestone base carries brickwork above, the two materials expand and contract unequally and the horizontal joint between them cracks open. Water gets in at that line, and because it is often below the roofline nobody sees it until the interior wall stains.

Wind-driven rain saturating the exposed face. On an exposed stack the windward side takes far more water than the rest, and the damage is one-sided — spalling and efflorescence on the west face while the east face still looks new. It reads as a defect in the brick when it is really a question of exposure.

Tall chases with long unsupported flue runs. The higher the chase, the more joints in the metal flue and the more opportunity for a section to pull slightly apart or for the chase framing to move. Long runs also cool the flue gases more, which means more condensate collecting on the underside of the cover.

Heavy creosote from serious wood burning. Where a fireplace or stove is a primary heat source rather than an occasional pleasure, creosote accumulates fast — especially glazed third-stage deposits when the wood is not fully seasoned or the flue runs cool. This is the part of the service area where sweeping is genuinely a safety job rather than housekeeping.

First-generation prefab units from the 1970s and 1980s that are now beyond parts. The earliest factory-built fireplaces here have reached the point where replacement components are no longer manufactured, so the honest answer is often that the unit needs replacing rather than repairing — and saying so is the job.

Rental-stock neglect on genuinely old flues. A 150-year-old chimney in owner-occupied hands gets looked at; the same chimney in a house divided into student lets does not, sometimes for a decade. What we find is rarely one dramatic fault and usually a decade of small ones compounding — debris, nesting, unswept deposits and a cap that went missing years ago.

Persistently damp masonry in the river bottoms. Brick that stays saturated has far less freeze tolerance, so bottom-land chimneys in Eudora spall at a rate that surprises owners who compare notes with friends a few miles uphill. Waterproofing matters more here than almost anywhere in the service area.

Closed-off flues that were never properly sealed. Bricking up a fireplace opening without capping the flue above leaves an open shaft taking rain for decades. The damage accumulates invisibly inside the stack and then appears as damp on an upstairs wall with no obvious source.

Decorative corbelling shedding from the top down. Every projecting course on an ornamental Victorian chimney is a ledge that holds water, and each one freezes and pushes the brick above it outward. These stacks fail from the crown downward, and by the time bricks are landing on the roof the top third usually needs rebuilding rather than patching.

Downdraught on exposed rural sites. A chimney standing alone on open ground with no trees or neighbouring buildings gets wind from every direction, and pressure differences push smoke back down the flue. Owners assume a blockage; the answer is usually a properly specified anti-downdraught cap rather than a sweep.

Layers of old repair concealing the actual fault. A century-old stack here has typically been patched several times by several different hands — cement over lime, a poured cap on top of an earlier one, flashing sealed with tar. Each layer hides what is underneath, so the first job is working out what is original and what is not.

Interior wall chimneys where the fault is inside the house. Where a stack runs up through the middle of the building rather than on an outside wall, a failed flue does not show as damp on an exterior face — it shows as staining on an upstairs bedroom wall, or a smell, and the chimney is the last thing anyone suspects.

Long, cold flues condensing on the way up. A tall flue loses heat over its run, and where gases cool below their dew point they deposit moisture and acidic residue on the flue walls. In Atchison’s tallest houses that produces liner deterioration in the upper third while the lower section still looks sound.