Highland Park's housing stock runs from soft-brick Colonials built in the 1920s and 1930s near Ravinia through mid-century ranches and split-levels to 1990s construction, with a median build year around 1958. Many of the older homes received Portland cement repairs in the 1960s through 1980s that are now causing brick spalling - the hard cement mortar is trapping moisture in soft brick it was never compatible with. Delta Tuckpointing serves Highland Park from our Libertyville office, 10 miles away, and identifies the correct mortar for each home's era before any grinding starts.
Highland Park's Mixed-Era Housing Stock: Getting the Mortar Right
Highland Park spans a wider range of residential architecture than almost any other community we serve. The streets near Ravinia and the lakefront contain Colonials, Tudors, and ranches built in the 1920s through 1940s with soft Chicago common brick. Further inland, ranches and split-levels from the 1950s through the 1970s used harder machine-pressed brick and Portland-based mortar. Newer colonials from the 1980s and 1990s represent a third distinct generation. The city's median home dates to around 1958, but the key diagnostic step on any Highland Park job is identifying which era the home belongs to before choosing a mortar type - getting this wrong on a 1930s Colonial has the same consequence here as it does on the North Shore.
Tuckpointing is the process of removing deteriorated mortar from between bricks to a minimum 3/4-inch depth and replacing it with fresh mortar matched in chemistry, color, and joint profile. For Highland Park's pre-1960 soft brick stock, Type N lime-based mortar at a minimum compressive strength of 750 PSI is the correct specification. For the harder machine-pressed brick on mid- and late-century homes, Type S at a minimum 1,800 PSI is often appropriate. We test the existing mortar and assess the brick during our free inspection to confirm the correct type for each project.
Why Highland Park Mortar Joints Fail
The dominant tuckpointing problem in Highland Park is the legacy of Portland cement repairs applied to pre-1950 soft brick. Through the 1960s and 1980s, many of the older homes near Ravinia and the lakeshore were repointed with Type S or straight Portland cement mortar. The repairs looked correct when fresh. But Portland cement is harder than the original soft brick, and it blocks the moisture vapor path the original lime system was designed to use. Moisture accumulates inside the brick, freezes overnight, expands, and pops the face off. The mortar joint that was "repaired" remains intact while the brick face beside it deteriorates. When we encounter this pattern, the repair scope includes removing the incorrect cement mortar and restoring the joint with lime-based product.
The second Highland Park problem is ravine-side foundation and chimney movement. The city's terrain includes significant grade changes and deep ravines, and homes situated near ravine edges sit on soils that shift more than flat suburban lots. Differential settlement stresses chimney foundations and foundation wall masonry, opening joints and sometimes cracking individual courses. On these properties, tuckpointing addresses the masonry, but the underlying drainage and soil condition also need to be assessed - repointing over an active settlement problem will not hold.
North-facing walls in Highland Park compound this pattern. On the city's sloped terrain, north-facing walls stay damp well after rain and snowmelt. Repeated wet-dry-freeze cycles erode mortar on these elevations years ahead of the south and west walls on the same house.
The Right Mortar for Highland Park Homes
For Highland Park's 1920s-1940s soft brick near Ravinia and the lake corridor, Type N lime-based mortar at a minimum compressive strength of 750 PSI is the standard, following NPS Preservation Brief 2 guidance for pre-1950 soft brick. The mortar must be softer than the brick it joins - this is the rule that Portland cement repairs violated on so many Highland Park homes in past decades.
For mid-century and later Highland Park construction with harder machine-pressed brick, Type S at a minimum 1,800 PSI provides appropriate strength for the more durable brick units. We do not apply a single mortar type across Highland Park projects - the era and brick type determine the specification on every job.
Tuckpointing Pricing and What to Expect in Highland Park
Tuckpointing in Highland Park runs $8 to $25 per linear foot, with full facades averaging $1,500 to $4,500. Chimney tuckpointing on all four sides typically runs $800 to $2,500. Projects requiring incorrect Portland cement removal - which adds grinding and prep time - will typically fall higher in the range. Every project gets a free written estimate before any work begins.
An illustrative Highland Park project: a 1936 Colonial near Ravinia required removal of Portland cement mortar applied in the 1970s, and repointing with proper Type N lime-based mortar to stop brick spalling on the north and east facades. The correct diagnosis - mortar incompatibility rather than simple joint erosion - was what made the repair durable. Delta is 10 miles from Highland Park, approximately 18 minutes from our Libertyville office.
Permits and Building Requirements in Highland Park
Masonry permit requirements vary by municipality. Here is what currently applies in Highland Park:
Highland Park requires permits for chimney work, structural masonry repairs, and any exterior modifications. The city building department processes residential permits efficiently.
Delta confirms all applicable requirements with the Highland Park building department and handles the permit process as part of every project where permits are required.