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St. Louis, MO Aiopro1701@gmail.com
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Our Work

Real projects, real results. Browse our gallery to see how we transform, repair, and protect chimneys across the St. Louis area.

The Patch That Was Hiding a Void

Someone had already been up here. They smeared mortar across the face of spalling brick and called it a repair. When we pulled the failing brick out there was a void running straight through the corner of the chimney — the patch had been covering it. We rebuilt the corner course by course, ground out and repacked every open joint with colour-matched mortar, and finished with a poured crown that overhangs the brick on all four sides.

Before — A Smear Of Mortar Over Failing Brick

Before Spalled chimney brick above the roofline with mortar smeared over the face as a cosmetic patch instead of a real repair, St. Louis MO
Cracked Crown Cracked chimney crown with open mortar joints and patch material breaking away along the corner, St. Louis MO

Demolition — What The Patch Was Hiding

The Void Failed chimney brick removed, exposing a void that ran right through the corner of the chimney behind the old patch

Rebuild — New Brick, Course By Course

Rebuilding Bad brick removed and new brick going back in course by course on the chimney corner, St. Louis MO
Crown Form Rebuilt and tooled chimney brickwork with a wood form set for a poured crown that overhangs the brick face

Crown Pour — Overhang On All Four Sides

Crown Poured Freshly poured chimney crown with an overhang that throws water clear of the brick instead of letting it run down the face

Tuckpointing — Every Joint Ground Out And Repacked

Repointed Chimney tuckpointing complete with every open joint ground out, repacked and tooled in colour-matched mortar, St. Louis MO

After — Rebuilt, Crowned And Flashed

Finished Chimney rebuilt above the roofline with a new poured crown, reset flashing and counterflashing, St. Louis MO
The Corner Close-up of the rebuilt chimney corner that had the hidden void, laid solid and tooled to match the original brick

Full Rebuild From The Roofline Up

The whole stack above the roof was finished — brick faces spalling off, moss and algae holding moisture against the masonry, mortar washed out of the joints and a crown that had broken apart. There was nothing sound left to patch into. Every brick above the roofline came down, the roof was tarped, and the chimney was rebuilt from the flashing up, including a new top flue tile after the old one turned out to be cracked.

Before — Spalled Brick, Moss And A Broken Crown

Before Chimney above the roofline with spalling brick faces, heavy moss and algae and a broken crown, St. Louis MO

Tear-Down — Back To The Flue Tile

Stripped Every brick above the roofline removed with only the clay flue tile left standing and the roof tarped for protection
First Courses First courses of new chimney brick going back down at the roofline with new flashing tucked in as the brick comes up

New Flue Tile — The Old Top Tile Was Cracked

New Tile Cracked top clay flue tile replaced with a new tile and brick built up around it during a chimney rebuild
From The Ground View from the ground of new chimney brick above the roofline meeting the original brick below

Crown — Poured On A Form With A Real Overhang

Crown Form Chimney crown built on a wood form that runs past the brick on every side to give the finished crown a real overhang

After — Rebuilt, Crowned, Capped And Flashed

Finished Chimney rebuilt from the roofline up with new brick, new top flue tile, poured crown with an overhang and a new cap, St. Louis MO
Counterflashing Side view of the finished chimney rebuild with new counterflashing worked into the shingles and the crown overhang standing clear

Chase Siding Replaced Down To The Sheathing

A chimney chase is a wood box. The siding on this one had been open to the weather for years, water got in behind it, and the sheathing and corner boards underneath were rotted through by the time we opened it up. We stripped the chase, replaced the bad sheathing, re-wrapped it, then ran new siding and trim tight to the top and finished with a new cover and cap.

Before — Siding Off, Rot Along The Corners

Before Chimney chase with the siding stripped off showing rotted sheathing and corner boards after years of water getting behind the siding

Repair — New Sheathing And Housewrap

Re-Wrapped Rotted chase sheathing replaced and the whole chimney chase re-wrapped square and dry before new siding goes on

Siding — Run Tight With New Corner Trim

New Siding New siding going onto the chimney chase with corner trim run tight so nothing is left open at the edges
Full Height New chase siding and trim complete up the full height of the chimney chase, St. Louis MO

After — Closed Up, Covered And Capped

Finished Finished chimney chase with new siding, trim, chase cover and cap, every joint closed against water, St. Louis MO

Chase Top Rebuilt Under A Cover That Never Overhung

The old chase cover sat flat on the chase with no overhang, so every rain ran straight onto the plywood top underneath. By the time it came off, the wood was soaked through. We rebuilt the entire chase top — new plywood deck, new perimeter framing — then set a stainless cover with a cross break and a skirt that carries water down past the siding.

Before — Cover Off, Plywood Soaked Through

Before Old chimney chase cover removed showing plywood chase top soaked and rotted through from years of water running onto it

Rebuild — New Deck And Perimeter Framing

New Top Chimney chase top rebuilt with a new plywood deck and new perimeter framing, square and dry, ready for a new cover
Clean Edges New chimney chase top seen from the roof with clean edges all round so the new cover can overhang past the siding

After — Stainless Cover With A Cross Break

Finished New stainless steel chimney chase cover with a cross break and a skirt carried down over the siding, plus a new cap, St. Louis MO

Undersized Chase Cover, Rotted Framing

This cover was too small for the chase and had no overhang, so water ran off the edge and straight into the framing. The wood had rotted through at the corner. We cut out the bad framing, rebuilt all four sides, and fitted a stainless cover whose skirt runs down over the siding so water can never reach the wood again.

Before — Rot At The Corner

Before Chimney chase cover that does not overhang the chase, with the wood framing rotted through at the corner

Repair — New Framing On All Four Sides

Reframed Rotted chase framing cut out and new framing installed on all four sides of the chimney chase

After — Proper Overhang And A New Cap

Finished New chimney chase cover with a proper overhang and a new cap installed, St. Louis MO
Skirt Detail New stainless chimney chase cover with the skirt running down over the siding so water never reaches the framing

Crown Gone, Top Courses Coming Apart

The crown had broken off this chimney and taken the top courses of brick with it, leaving the clay flue tile and liner standing exposed. We rebuilt the top courses, poured a new crown with an overhang, reset the flashing and finished with a new liner and rain cap.

Before — Crown Broken Off, Brick Loose

Before Chimney with the crown broken off and the top courses of brick coming apart, clay flue tile and metal liner left standing exposed

After — Rebuilt, Crowned And Capped

Finished Chimney with rebuilt top courses, a new poured crown with an overhang, new liner and rain cap, St. Louis MO
Overhang Detail Detail of a new poured chimney crown whose overhang stands proud of the brick so runoff drips clear of the face

Broken Clay Coping Tile Replaced

On a parapet chimney the clay coping tile is the roof of the whole structure. This one had broken apart and left the brick and rubble underneath open to the weather. We set a new clay tile in colour-matched mortar and parged the chimney so it sheds water again.

Before — Broken Tile, Open Masonry

Before Broken clay coping tile on a chimney with brick and debris exposed underneath, St. Louis MO

After — New Clay Tile, Chimney Parged

New Tile New clay coping tile set on a chimney in colour-matched mortar
Full Chimney Full chimney after the clay coping tile replacement, parged and re-crowned, St. Louis MO

Drop-In Liner For A Water Heater And Furnace

When the clay tiles inside a masonry flue are cracked or missing, the chimney is no longer sealed and combustion gases can reach the wood framing around it. This one got a stainless drop-in liner sized to the appliances, run the full height of the flue and tied into the water heater and furnace in the basement.

From The Roof — Looking Down The Flue

Down The Flue Looking down a masonry chimney flue from the roof at a new stainless liner running the full height inside the old flue

In The Basement — Both Appliances Tied In

Appliance Tie-In Water heater and furnace connections in the basement tied into one properly sized stainless chimney liner, St. Louis MO

Custom Decorative Chase Surround

A one-off fabrication for this customer. Sheet metal pressed with a faux brick pattern, built to wrap the metal liner where it comes out of the chase so the top reads like masonry instead of exposed pipe.

Fabricated And Installed

Custom Build Custom fabricated decorative chimney chase surround in sheet metal pressed with a faux brick pattern, wrapping the metal liner, St. Louis MO

Chimney Cricket (Saddle) Built From Scratch

A wide chimney with nothing behind it — just a flat trough collecting rain, leaves and ice. We tore off the failed tar-and-flashing patchwork, framed a proper cricket into the deck, and re-wove the shingles and counter-flashing so water now splits around the chimney.

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Tear-Off — Removing the Failed Flashing

Tear-Off Old chimney step flashing and shingle courses torn off down to the roof deck — no cricket present behind chimney

Framing & Decking — Built to Shed Water

Level Ridge Wood cricket ridge board framed behind chimney with a level confirming the ridge is dead straight
Decked Completed cricket framing decked in OSB behind the chimney, tied into the back wall and ready for underlayment and new flashing

Shingling In — Hand-Cut Into Both Valleys

Shingling AIO Pro technician hand-cutting and nailing shingle courses into the new chimney cricket valleys — South St. Louis 63111

After — Cricket, Flashing & Fresh Crown Coat

Finished Cricket Finished chimney cricket shingled and flashed with new counter-flashing — water now splits around the chimney, South St. Louis MO
Crown Coat + Cap Freshly sealed chimney crown coat with new stainless mesh cap installed above the rebuilt cricket

Structural Crack — Above-Roofline Rebuild

A previous crew had bolted a metal plate over the crack. It hid the problem while the freeze-thaw cycle kept widening it. We took the exposed section down to sound masonry and rebuilt it with a proper crown.

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Before — Structural Crack & Failed Patches

Before Maryland Heights chimney with vertical structural crack running down face — failed patch plate visible
Before Side view of Maryland Heights chimney showing crown damage and mortar failure at top
Before Third angle of Maryland Heights chimney damage — vertical crack continuing down face with efflorescence

Demolition — Down to Sound Structure

Removing Chimney demolition close-up showing failed brick and old mortar being removed
Scale of Work Wide ground-level view of chimney during demolition with scaffolding ladder
Scale of Damage Large pile of demolished brick debris on tarp — scale of above-roofline rebuild scope

Rebuild — Precision Craftsmanship

Plumb Guide Wood plumb guide board attached to chimney for perfectly straight new brick courses
Rebuild Progress Wide view of chimney partially rebuilt with new brick courses laid on old lower structure
Course Detail New structural clay brick course being laid with string level and fresh mortar
Near Complete Chimney nearly finished — new brick to top, level board for crown formwork, new flashing at base

After — Sound for Another 60 Years

Finished Top Rebuilt chimney top with new brick, crown, flue tile and stainless cap — Maryland Heights MO
Crown Detail Top-down view of freshly poured concrete crown with new flue tile and cap
Wide View Wide view of Maryland Heights chimney — original lower section preserved, rebuilt top blends seamlessly
Full Context Full chimney height from ground level — showing original character preserved with new stable top

Wood Stove Liner Replaced to Code

Rusted single-wall pipe running straight through a combustible ceiling — no thimble, no clearance. Replaced with a full Class A insulated system to NFPA 211.

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Before — Fire Hazard, Not to Code

Danger Old rusted single-wall stovepipe passing directly through wood ceiling and Styrofoam insulation — extreme fire hazard
Not Code Single-wall stovepipe extending above roof — not code compliant, no Class A pipe
Before Workshop wood barrel stove with old rusted chimney pipe before code-compliant replacement

After — Class A Insulated, NFPA 211 Compliant

Class A + Cap New stainless steel Class A insulated chimney pipe with spark arrestor cap and storm collar flashing
Roof Sealed Roof after wood stove chimney replacement — old penetration patched, new flashing installed
Interior Done Workshop wood stove with new black double-wall stovepipe and proper ceiling support thimble

Recurring Leak, Permanently Solved

Two contractors had already "fixed" this leak. We found three separate entry points on the first visit — and closed every one of them.

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Before — What The Roof Looked Like

Before Wentzville brick chimney before repair — right flue tile flush with crown, water entry risk

Diagnosis — Every Leak Source Identified

Leak #1 Failed flashing corner at chimney base with exposed underlayment — Wentzville MO
Leak #2 Wider view of failed flashing perimeter with multiple failure points
Bonus Find Torn ridge cap shingle at roof edge — unrelated to chimney but active leak source

Repair — Every Point Sealed

Flashing + Extender New black flashing installed and flue extender visible on right flue tile — Wentzville
Ridge Fixed Ridge cap shingle repaired at roof edge — bonus leak source eliminated
Extender Detail New clay flue extender installed on right flue with fresh mortar seal

After — Sealed, Coated, Capped for 20 Years

Complete Wentzville chimney fully restored — 20-year crown coat, dual stainless damper caps, all flashing sealed
Damper Adjusted Extended damper cap cable and spring mechanism — adjusted for taller flue

Above-Roofline Chimney Rebuild

Only the section above the roof had failed — the masonry inside the house was sound. Rebuilt from the roofline up, at roughly a third of the cost of a full teardown.

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Before Failed chimney above roofline — no crown, crumbling top brick courses, loose bricks — rural St. Louis area
In Progress New brick courses laid mid-rebuild — fresh mortar, proper alignment before crown pour
After Fully rebuilt chimney above roofline — new brick, new crown, new clay flue tile, new stainless cap with spark arrestor

Chimney Relining + Top-Mount Damper

Insulated stainless liner, plus a top-sealing damper that actually seals — against a silicone gasket at the top of the flue, not metal resting on metal.

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Step 1 — Demolish the Old Clay Tile Liner

Old Liner Interior view down the old clay tile flue with damaged smoke chamber — High Ridge MO 63055
Demo Tools Stone chimney top with liner breaker rods and DeWalt drill during demolition
Breaker In Top-down view of flue with liner breaker rod inserted for clay tile demolition

Step 2 — Install Insulated Stainless Steel Liner

Pre-Insulated New insulated stainless steel chimney liner wrapped in ceramic wool blanket on roof
Inserting Technician feeding insulated stainless steel liner down into the chimney flue
Seated New insulated liner seated on chimney crown with ceramic wool packing seal

Step 3 — Seal Connection + Install Top-Mount Damper

Sealed New liner sealed with refractory collar and high-temperature silicone at smoke chamber connection
Top Damper New stainless steel top-mount damper installed on High Ridge stone chimney
Interior Control Interior firebox view of top-mount damper control chain and mechanism

Chase Leak — Hidden Damage Repair

It started as a routine inspection. Green streaking on the siding was the only clue. We took a panel off and found the sheathing rotted through.

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Before — Green Staining on Siding (The Warning Sign)

Before Green algae staining on siding around dryer vent on chimney chase — O'Fallon MO 63368
Before Vertical black-green streaks running down side of chimney chase — sign of hidden water damage

Discovery — What Was Hiding Underneath

Rot Found Vertical strip of severely rotted sheathing exposed after removing siding on chimney chase
Rot Found Blackened rotted wood around dryer vent penetration on chimney chase — hidden water damage
Source Found Rot at gutter line — source of the water infiltration traced to failed roof-to-chase junction

Repair — New Sheathing, Professional Weather Barrier

WRB Install Pactiv GreenGuard weather-resistive barrier installed on chimney chase after wood replacement
New Sheathing Fresh OSB sheathing installed replacing rotted wood on chimney chase
WRB + Vent Weather barrier detail around dryer vent opening — proper penetration sealing

After — Sealed, Restored, Water-Tight

After Chimney chase after full restoration — new siding, new dryer vent, clean trim work — O'Fallon MO
After Wide view of finished chimney chase repair — no more staining, water damage sealed permanently

Complete Restoration + Water Heater Liner

Cracked crown, failing joints, and an aging water heater flue liner — three separate problems handled in a single visit, on a single setup.

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Before — Failed Crown, Cracked Bricks, Aging Liner

Before Chesterfield brick chimney with cracked concrete crown and deteriorating mortar joints — before restoration
Before Close-up of severely spalled brick and open mortar gaps on Chesterfield chimney

Process — Tuckpointing, Crown Formwork & New Liner Install

Tuckpointing Chimney tuckpointing in progress — upper rows filled with fresh mortar
Tuckpointing Second side of Chesterfield chimney mid-tuckpointing
Crown + Liner New concrete crown poured with wooden formwork and new metal water heater flue liner visible

After — Structurally Sound, Sealed, Safe

After Chesterfield chimney fully restored — clean brick, fresh crown, new cap
After Head-on view of finished chimney restoration with uniform mortar joints
After Top-down view of finished crown with new water heater liner installed — Chesterfield MO

Chase Cover Replacement — Stainless

A rusting galvanized pan replaced with a custom-fabricated stainless cover, cross-broken so water sheds instead of pooling on top.

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Before Rusted galvanized chase cover with water damage streaks on prefab chimney — Swansea IL 62226
After New custom stainless steel chase cover with cross-break for water drainage — Swansea IL

Stone Chimney Repointing

Every joint cleared by hand chisel. A power grinder has no straight line to follow on stone — it skips, and it scars the face permanently.

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Before — Failed Mortar, Open Gaps Between Stones

Before Stone chimney with failed mortar and open gaps at the base before repointing — Maryland Heights MO
Before Top of stone chimney showing severely eroded mortar joints between stones — Maryland Heights MO 63043

After — Fresh Mortar, Hand-Tooled to Match

After Stone chimney after professional repointing — fresh color-matched mortar between stones
After Close-up of fresh mortar packed between natural stones after repointing
After Restored natural stone chimney — side angle view of finished repointing work in Maryland Heights MO

Full Chimney Tuckpointing

Century-old lime mortar that had run out of binder. Ground out to full depth and repointed with a mix matched for both colour and hardness.

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Before — Failed Mortar & Spalling Brick

Before Failed chimney mortar joints with efflorescence before tuckpointing — University City MO 63121
Before Close-up of spalled brick face and white efflorescence on chimney before repair
Before Deteriorated mortar joints on opposite side of chimney before tuckpointing

Process — Grinding Out Old Joints to Proper Depth

Joints Cut Out Old mortar joints ground out to proper depth — tuckpointing in progress
In Progress AIO Pro Chimney tuckpointing work in progress on University City chimney

After — Restored & Sealed

After Finished tuckpointing — restored brick chimney in University City MO
After Close-up of fresh mortar joints after professional tuckpointing
After Completed chimney tuckpointing — side view of finished work

Full Chimney Restoration

A complete structural restoration, taking an unsafe, crumbling structure through the rebuilding process to a flawless, sealed finish.

Before Before
Process Process
After After

Tuckpointing & Custom Chase Cover

Grinding out deteriorated mortar joints, matching the structural integrity, and installing a custom-fabricated chase cover to permanently stop leaks.

Before Before
After After

Concrete Crown Restoration

Removing severely cracked and degraded concrete crowns that allow water damage, and casting a brand new, weather-tight crown.

Before Before
After Crown restoration — new chase cover installed

Firebox Panel Replacement

Replacing cracked and dangerous refractory panels inside the firebox to ensure safe, efficient burning without heat transfer risks.

Before Cracked firebox — refractory panels broken
After New refractory panels installed

Smoke Chamber Parging

Smoothing and sealing the smoke chamber to improve draft efficiency and eliminate hazardous creosote buildup zones.

Before Before
After After

Masonry Rebuild

Tearing down compromised brickwork and executing a perfect, structurally sound masonry rebuild from the roofline up.

Before Before rebuild
Process During rebuild process
After Masonry rebuild completed — parged and sealed chimney

Chimney Sweep & Cleaning

Professional chimney sweep using commercial HEPA equipment. Complete creosote removal from flue, firebox, smoke chamber, and smoke shelf — zero dust in your home.

Equipment Setup Chimney sweep setup — HEPA vacuum and brush equipment ready
In Progress Chimney sweep in progress — sealed fireplace with HEPA vacuum

Gas Fireplace Service

Annual gas fireplace inspection and cleaning — burner ports, pilot assembly, gas valve test, and CO safety check. Keeps your gas appliance safe and efficient all season.

Gas Logs Service Gas fireplace with logs burning — after service
Insert Service Elegant marble fireplace insert — gas service

Air Duct Cleaning

follows NADCA standards whole-home HEPA duct cleaning. Before-and-after camera documentation. Cleaned to NADCA standard, the industry benchmark for duct cleaning.

Before Air duct interior before cleaning — heavy dust accumulation on walls
After Duct opening after HEPA cleaning

Dryer Vent Cleaning

Full dryer vent line cleaning from appliance to exterior. Lint extraction, airflow test, and flex duct replacement if needed. NFPA: 34% of dryer fires are caused by failure to clean.

Before — Fire Hazard Critically clogged dryer vent before cleaning
After — Vent Clear Large lint mass extracted — vent clear

Chimney Waterproof Seal

Professional vapor-permeable waterproof sealant system applied to a deteriorating chimney. The sealant blocks rain from entering the masonry while allowing trapped moisture to escape — preventing the freeze-thaw spalling that destroys unprotected brick over Missouri winters. 10-year protection guarantee included.

Before — Exposed Masonry Chimney masonry before waterproof seal — exposed and vulnerable
After — Sealed & Protected Chimney after waterproof seal application — 10-year protection

Chimney Flashing Repair — Job 1

Complete step flashing and counter flashing replacement on a stone chimney. The old flashing had completely separated from the masonry, allowing water to pour into the attic with every rain. RhinoRoof U20 ice-and-water shield applied first, new custom-bent flashing installed and sealed tight.

Before — Separated Chimney flashing separated from masonry before repair
After — Sealed New chimney flashing installed and sealed after repair

Chimney Flashing Repair — Job 2

Full flashing replacement on a brick chimney — step flashing removed, new base and counter flashing bent and installed at the roofline. Two-phase process shown: flashing tucked into mortar joints and sealed, then finished with shingles wrapped tight to the chimney.

During — Step 1 Chimney flashing installation step 1 — base flashing
During — Step 2 Chimney flashing installation step 2 — counter flashing

Chimney Cricket (Saddle) Installation

A chimney cricket is a peaked ridge built behind a wide chimney to divert rainwater around it instead of pooling against the back wall — the #1 cause of leaks on chimneys wider than 30 inches. Any chimney over 30" wide is required by code to have a cricket. This job shows the full build: framing, sheathing, leveling, waterproofing underlayment, and final shingled finish.

Before — No Cricket, Water Pooling

Before Wide chimney with no cricket — water pooling behind chimney

Process — Framing & Construction

Frame Build Cricket frame being built behind chimney
Leveling Cricket frame leveled with spirit level
Waterproofing Waterproofing underlayment applied over cricket frame

After — Finished & Shingled

After Completed chimney cricket shingled and sealed — water diverted
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