Chimney Masonry Repair for Mount Prospect Homes

Chimney masonry repair in brief

Chimney masonry repair restores the brick, block and mortar of the stack, above and below the roofline. Typical work includes cutting out and replacing spalled or cracked brick, grinding out and repointing open mortar joints, repairing a cracked or damaged chimney crown, and rebuilding courses that have loosened or shifted. The goal is a chimney that sheds water and stays structurally sound, so the repair depends on how deep the damage goes. The steps, materials and what to expect on the day are covered in how chimney masonry repair works.

What affects chimney masonry repair in Mount Prospect

• In Mount Prospect, 3.3% of housing units were built before 1940 and 48.2% between 1940 and 1969; the median year built is 1969 (CMAP Community Data Snapshot, American Community Survey 2020-2024 five-year estimates). Source: CMAP Community Data Snapshot | Mount Prospect.
• Mount Prospect's Residential Roof Supplement requires sidewall and masonry flashings to be metal or lead. Existing flashing may be reused, but all flashing must be weather tight, which is the responsibility of the roofing contractor or of a homeowner who replaces their own roof. Mount Prospect requires a Village contractor's license for general contractors and certain trades, and treats a company as a general contractor when it is the only contractor on a project. Source: Residential Roof Supplement (Village of Mount Prospect Community Development Department, 2026); Village of Mount Prospect Community Development Department - Guide to Rental Property Maintenance Inspection; Village of Mount Prospect - Licenses and Permits.

What Mount Prospect's housing data and Village rules mean for your chimney

Housing age: many chimneys have decades of wear

According to the CMAP Community Data Snapshot (American Community Survey 2020–2024 five-year estimates), 48.2% of Mount Prospect's housing units were built between 1940 and 1969, another 3.3% before 1940, and the median year built is 1969. For a house from that era, the chimney has been standing for more than half a century.

On older masonry, mortar is meant to wear before the brick does, so open or crumbling joints are usually the first thing to check. Past patch jobs matter too. Mortar that is harder than the surrounding brick, or a crown skimmed over with a thin cement layer, can trap water and speed up spalling. An honest repair plan starts with what earlier work was done, not only with the visible cracks.

Rental buildings: what the annual inspection checks

The Village of Mount Prospect Community Development Department's Guide to Rental Property Maintenance Inspection is used in the Village's annual apartment-building inspections. It requires chimneys to be straight, structurally sound and free of loose, spalled or cracked masonry, with open joints tuckpointed. Each item corresponds to a specific kind of masonry work:

Owners and managers can schedule the work ahead of the inspection rather than after a write-up. Commercial and property-manager work is offered.

Roof replacements: flashing against the masonry

The Village's Residential Roof Supplement (Community Development Department, 2026) requires sidewall and masonry flashings to be metal or lead. Existing flashing may be reused, but all flashing must be weather tight, and that is the responsibility of the roofing contractor, or of a homeowner who replaces their own roof.

In practice, flashing can only seal as well as the masonry it is tied into. If the chimney has open joints or loose brick where the counter-flashing is set, plan the masonry repair before or alongside the new roof so the flashing goes back against sound mortar. We also repair chimney flashing when the masonry itself is fine but the seal has failed.

Masonry repair or a different fix?

• Spalled faces, cracked or loose brick, open joints or a cracked crown: this is masonry repair, and the chimney masonry repair service explains the options from repointing to partial rebuilds.
• Water stains inside but the brick and mortar look sound: the leak is more often at the flashing, the crown or the top of the flue. A chimney inspection in Mount Prospect can find the source before any brick is touched.
• A rusted, bent or missing cap, or a damaged metal cover on a framed chase: that is a cap or cover replacement, not masonry work. Read chimney cap vs chase cover to tell which one your chimney has.
• Cracked flue tiles or a damaged liner found during the repair: that calls for liner work inside the flue, handled separately from the outside masonry.

Booking masonry repair in Mount Prospect

24-hour service runs Sunday–Friday, and emergency calls are accepted, for example when brick has fallen or a section of the stack looks unstable. For the other chimney, fireplace and dryer vent work we do, browse our services across Mount Prospect.