Chicago, IL Historic Property Preservation
Careful Restoration of Chicago Terra Cotta, Limestone & Historic Brick Landmarks
Historic Building Restoration Specialists in Chicago, IL
Chicago gave the world the skyscraper, and its historic buildings still show how that happened. The Loop holds early steel-frame towers wrapped in brick, stone and glazed terra cotta. Michigan Avenue and the Near North Side are lined with limestone and terra cotta landmarks from the 1920s. Neighborhoods such as Pullman, Hyde Park, Wicker Park and the Gold Coast have blocks of historic brick buildings and greystone two-flats. These buildings have survived more than a century of Chicago winters, but freeze-thaw cycles, rusting steel anchors and old repairs made with the wrong materials have left many of them in need of careful attention.
Restoring a historic Chicago building is different from repairing a modern one. Original materials have to be matched, not replaced with whatever is easiest. Mortar must be softer than the brick it holds. Cleaning must remove dirt without damaging the stone or the glaze on terra cotta. Presto Restoration follows the National Park Service’s Preservation Briefs on every historic project, and we work alongside your architect, engineer and the Commission on Chicago Landmarks review process when a building is a designated landmark or sits in a landmark district.
With more than 25 years of restoration experience, our crews bring the patience and craftsmanship these buildings need. We repair and repoint masonry, clean and restore stone and terra cotta, rebuild damaged details and waterproof historic walls with breathable treatments. The goal is simple: keep your building sound, keep it dry and keep the character that makes it part of Chicago’s history.
OUR HISTORIC PRESERVATION SERVICES IN CHICAGO
Presto offers a full range of preservation services for Chicago’s historic commercial, institutional and residential buildings, all carried out with materials and methods that respect the original construction.
Mortar failure is the most common problem on historic Chicago masonry. After decades of freezing and thawing, old lime mortar crumbles and water gets into the wall. Repointing with modern high-strength mortar is a mistake many old buildings carry today. Hard mortar does not flex, so the brick around it cracks and spalls instead. We carefully remove deteriorated joints by hand or with controlled tools, then repoint with lime-based mortar matched to the original in strength, color, texture and joint profile. Where bricks are damaged beyond repair, we replace them with salvaged or custom-matched units so repairs blend into the wall.
Indiana limestone and glazed architectural terra cotta define many of Chicago’s most loved buildings. Both suffer when water gets in. Limestone erodes, cracks and stains, while terra cotta cracks and sheds its glaze when trapped water freezes or hidden steel anchors rust and expand. We clean stone and terra cotta with the gentlest effective method, repair cracks and spalls with compatible patching materials, and reset or replace loose units. For terra cotta, we can also open the wall to inspect and treat corroded anchors so pieces stay securely attached to the building.
Historic windows are a big part of a building’s character. Many Chicago landmarks still have original steel, bronze or wood windows, and the large “Chicago windows” of the early skyscrapers are a style of their own. Over time, glazing putty dries out, frames rust or rot and perimeter joints leak. We repair and refinish historic frames, replace failed glazing compounds and seal window perimeters so the original windows can stay in place and work properly for years to come.
Cornices, carved stone, cast iron storefronts, brick corbelling and decorative terra cotta give historic Chicago buildings their character. These details are also the parts of the wall most exposed to weather, with ledges and projections that collect snow and water. When they deteriorate, they can become a falling hazard over the sidewalk. We stabilize loose details, repair broken pieces with compatible materials, and rebuild missing elements when needed. Where a detail can be saved, we save it. Where it must be replaced, we match its shape and finish so the repair is hard to spot.
Bronze storefronts, cast iron columns, copper cornices and decorative metalwork appear on historic buildings across the Loop and in Chicago’s older neighborhood commercial districts. Road salt, pollution and years of weather leave these metals stained, corroded or painted over. We clean and restore historic metals using methods that protect the original surface, treat corrosion, and apply protective finishes. Where joints between metal and masonry have failed, we reseal them so water no longer gets behind the metalwork.
Waterproofing a historic building calls for a light touch. Old masonry walls need to breathe. If they are sealed with a coating that traps moisture, water builds up inside and freezes, which causes more damage than it prevents. We repair the paths water uses first, such as open joints, cracked copings and failed flashings. Then, where appropriate, we apply breathable water repellents that reduce how much rain the wall absorbs without changing its look. This approach protects Chicago historic masonry through winter without harming the original materials.
Our Historic Preservation Process in Chicago
Working on a historic Chicago building means understanding it before changing anything. Our process documents the original materials, finds the cause of each problem, and plans repairs that protect the building’s history, whether or not it is a designated landmark.
Historic Property Survey
We document the building's current condition, original materials, past repairs and any landmark designation, so every decision starts with a clear picture of what is there.
Material Analysis
We identify mortar, stone, brick and terra cotta types, and test mortar samples where needed, so repair materials match the original in strength, color and texture.
Scope & Specification
We turn the findings into a clear scope that follows preservation standards and supports any review needed by the Commission on Chicago Landmarks.
Preservation-Grade Execution
Trained crews carry out the work with careful methods, protecting original materials and the people and spaces around the building.
Project Closeout & Documentation
You receive photo records, material data and documentation of the work for your files and future planning.
Plan Your Chicago Historic Restoration Project
Whether your historic Chicago building has crumbling mortar, cracked terra cotta or windows that leak every spring, call us or request a quote. Our team will respond to talk through your building and how to restore it the right way.
Why Chicago Property Owners Choose Presto for Historic Preservation
Our Local Chicago, IL Support Network
Historic buildings stay healthy with steady, gentle care between restoration projects. Presto works with a local support network so owners of Chicago’s older buildings can keep them maintained the right way all year.
For routine maintenance and everyday facility services, explore our sister companies:
Building Restoration Chicago: Localized repairs and exterior preservation for Chicago buildings.
Building Maintenance Chicago: Preventive maintenance that protects older Chicago properties between projects.
Building Services Chicago: Comprehensive day-to-day support for Chicago commercial buildings.
Recent Historic Preservation Projects in Illinois
ILLINOIS PORTFOLIO HIGHLIGHTS
View completed Presto projects in Illinois, including envelope restoration on Bromley Hall in Champaign.
Chicago Historic Preservation FAQs
What makes historic preservation different from regular restoration?
Regular restoration focuses on making a building watertight and sound with modern materials. Historic preservation does that too, but it also protects the original materials and appearance. That means matching mortar, stone and brick, using gentle cleaning methods and repairing original features instead of replacing them whenever possible.
Why does lime mortar matter on old Chicago buildings?
Many older Chicago buildings were built with soft lime mortar. It is meant to be weaker than the brick, so it absorbs movement and lets moisture escape. Repointing with hard modern cement mortar traps water and forces stress into the brick, which then cracks and spalls during freeze-thaw cycles. Using a matched lime mortar protects the brick for decades.
Can an older building be made watertight without losing its character?
Yes. Most leaks in historic buildings come from open mortar joints, failed flashings, cracked copings and worn window seals. Fixing those problems with compatible materials keeps water out without changing how the building looks. Where extra protection is needed, breathable water repellents can reduce absorption while keeping the original appearance.
How long does a historic restoration project take?
It depends on the size of the building and the work involved. Repointing one elevation of a small building may take a few weeks, while restoring the masonry and terra cotta on a large landmark can take several months or more. Mortar and many repair materials need mild temperatures to cure, so most of this work is done between spring and fall in Chicago.
Does Presto work on designated Chicago Landmarks?
Yes. We work on designated landmarks and on buildings in landmark districts. For these properties, exterior work typically needs review through the Commission on Chicago Landmarks process. We prepare scopes and material information that support that review and coordinate with your architect or preservation consultant.
How do you work with architects and preservation reviewers?
We share our survey findings, material testing results and proposed methods early, so your architect and any review body can weigh in before work starts. During the project we document the work with photos and keep everyone informed if conditions behind the wall change the plan.
Does Presto follow National Park Service guidelines?
Yes. Our historic work follows the National Park Service Preservation Briefs, which set out accepted methods for repointing, cleaning masonry, repairing terra cotta and caring for historic windows. Following these guidelines helps protect your building and supports projects that need preservation review.
Other Chicago Building Restoration Services
Preserve Your Historic Chicago Building
Historic buildings lose a little more of their original material every winter that repairs wait. Tell us about your Chicago property, and we will help you plan restoration that protects both its structure and its history.
Call 1-800-785-9927 or Request A Historic Restoration Quote online.