Chimney Inspection for Chicago Homes

What a chimney inspection covers

A chimney inspection is a structured look at every part of the venting system. That includes the firebox and damper, the smoke chamber and the flue liner. Outside, it runs from the crown and cap down to the flashing at the roofline. The goal is to confirm that smoke and combustion gases leave the house the way they should, and that nothing is cracked, blocked, loose or letting water in.

It is different from a cleaning. A sweep removes soot and creosote; an inspection judges the condition of the structure and the liner. The two are often done on the same visit, because a clean flue is much easier to examine.

Level 1, level 2 and level 3 inspections

The industry standard for chimneys (NFPA 211) describes three levels of inspection. The right level depends on what has changed with your chimney and how much of it can be seen without special tools or opening up the structure.

When a level 2 chimney inspection makes sense

Most homeowners who call about a problem end up needing a Level 2 inspection, because it adds a camera run through the full length of the flue. It is the right choice in these cases:

• You are switching from wood to gas or adding an insert.
• The chimney has had a fire or a hard hit from weather.
• The house is changing hands.

For a sale, our real estate chimney inspection service is built around that situation. After high winds, hail or a fallen limb, how storm damage chimney inspection works explains what we look for.

Signs your chimney needs an inspection

Some problems are obvious, but many can't be seen from inside the room. Book a chimney inspection if you notice any of these:

• Smoke rolling back into the room, or a fire that is hard to keep drawing
• A blocked chimney flue: debris, nesting material or soot falling into the firebox
• Cracked chimney brick, crumbling mortar joints, or spalling chimney brick with faces flaking off
• White, rust-colored or dark streaks on the outside of the chimney, or water stains on a ceiling or wall near it
• A strong smoky or musty chimney odor, especially in humid weather. Once the inspection finds the cause, chimney odor removal can deal with the smell.
• A missing, rusted or bent chimney cap, or a chimney cover on a prefab chase that holds water
• A cracked crown, loose flashing or a leaning stack
• Buying or selling a home, or not knowing when the chimney was last checked

What chimney stains can tell you

A chimney stain is often the first visible clue that water is getting where it shouldn't. The color and location usually point to the cause:

• White, chalky deposits on brick: this is efflorescence. Water is moving through the masonry and carrying salts out as it dries.
• Rust-colored streaks: these usually point to a corroding cap, chase cover or damper.
• Dark, tarry staining near the top of the stack or around the clean-out: creosote or condensation may be building up in the flue.
• Stains on an interior ceiling or wall next to the chimney: these usually trace back to the flashing, the crown or the cap.

During the inspection we follow the stain to its source rather than just noting it.

What happens during the visit, step by step

Chimney flue inspection and chimney camera inspection

The flue is the part of the chimney that matters most for safety, and the part you can see least. A cracked clay tile, a separated joint or a gap in a metal liner can let heat reach nearby framing. It can also let combustion gases seep into the walls. None of this is visible from the fireplace opening.

A chimney camera inspection solves that. We run a camera up the flue to record the liner's full length. The footage shows cracks, missing mortar between tiles, glazed creosote, nesting material and other blockages. A camera scan is part of every Level 2 inspection. It also helps whenever a flashlight check raises a question it can't answer.

Is your chimney flue in good shape?

It may be, but you can't confirm it from the hearth. A flue in good shape has these signs:

• A continuous liner with no cracks
• No gaps at the joints
• Light creosote or none
• Nothing blocking the draft

A fire that draws well and no smoke smell are good signs, but they don't settle the question. Cracks and gaps rarely cause symptoms until damage has started. A camera run through the flue is the only reliable way to know.

Chimney cap inspection

The cap keeps rain, animals and debris out of the flue. If it has a spark arrestor screen, it also keeps embers from escaping. During a chimney cap inspection we check four things:

• It is secured to the crown or flue tile.
• The mesh is intact and not clogged with soot.
• The metal isn't rusting through.
• It is the right size for the flue.

A missing or damaged cap is one of the most common reasons for water damage and nests in the flue.

Components, materials and fuel types we check

Inside, we check the firebox, damper and smoke chamber, plus any glass doors, insert or stove connected to the chimney. Fuel type matters too:

• Wood: fires leave creosote in the flue.
• Gas: appliances leave little soot, but they can still have blocked vents, corroded liners or poor draft.

We inspect wood-burning fireplaces, fireplace inserts, wood stoves and gas fireplaces, and we work on all major brands.

Safety and maintenance

Two hazards drive most chimney safety advice:

• Fire: creosote is flammable. A thick layer in the flue can ignite and burn hot enough to crack a liner. Our guide to creosote dangers and why chimney maintenance matters covers how it forms and what it looks like at each stage.
• Carbon monoxide: a blocked or damaged flue can push combustion gases back into the house instead of venting them. This applies to gas appliances as much as wood ones.

When should a chimney be rebuilt?

A chimney should be rebuilt when the damage goes deeper than repointing, brick replacement or crown repair can fix. These are the usual signs:

• The stack leans or has pulled away from the house.
• Spalling and loose brick run through much of its height.
• The mortar has failed so badly that bricks move by hand.
• A storm or chimney fire has caused structural damage.

Often only the section above the roofline needs rebuilding. An inspection tells you whether targeted masonry repair or tuckpointing will hold, or whether a partial or full rebuild is the safer choice.

When should you call a chimney pro instead of doing it yourself?

Call a chimney pro whenever the job involves the roof, the inside of the flue or anything structural. Homeowners can safely handle a few tasks themselves:

• Watch for warning signs
• Clear ash from the firebox
• Check the cap from the ground
• Keep smoke and CO alarms working

Other jobs need the right tools, a camera and safe roof access. These include judging a liner's condition, finding the source of a leak, removing a blockage or glazed creosote, and assessing cracked brick. Missing something in the flue can lead to a fire or carbon monoxide in the house.

Booking a chimney inspection

Call or request an estimate to set up a chimney inspection for your Chicago home. Estimates are free. Same-day visits are available where the schedule allows. 24-hour service runs Sunday–Friday, and emergency calls are accepted.

We also handle commercial and property-manager work, and gas fireplace and gas appliance work. If the inspection turns up cleaning or repairs, we can take care of those too.