Removing paint from brick is possible, but whether you should remove it depends on the type of brick, the age of the paint, and what the brick looks like underneath. On hard post-war brick with a single layer of latex paint, professional chemical stripping can restore a clean masonry surface without lasting damage. On soft pre-1920 Chicago common brick with decades of oil-based paint layers, removal carries real risk of permanent surface damage, and leaving the paint in place is sometimes the better outcome.
This is not a job for a pressure washer. The methods that cause the most damage to painted brick are the ones that look the most aggressive: sandblasting, high-pressure washing, and acid stripping. NPS Preservation Brief 6 documents how abrasive cleaning methods remove surface material permanently from historic masonry. The correct approach starts with chemistry, not force.
Paint became common on Chicago-area brick from the 1920s onward, accelerating in the 1940s and 1950s. Homeowners painted brick for many reasons: to seal against moisture, to cover efflorescence, to unify the look of a repaired wall, or simply as a decorating choice. The paint may have solved a visible problem at the time. The masonry problem it created became apparent decades later.
Why Painted Brick Damages Chicagoland Homes Over Time
Brick is a porous material. It absorbs moisture from rain, snow, and humidity and releases that moisture back as vapor through its exposed faces. According to the BIA Technical Note 3A on brick masonry material properties, this breathability is a designed characteristic, not a defect. It is how brick has managed water on North Shore homes for a hundred years or more.
Paint applies a film over that porous surface. A well-maintained paint film reduces the rate at which moisture enters the brick, which may seem beneficial. The problem is that water still enters through mortar joints, cracks in the paint film, window and door interfaces, and wherever the paint has deteriorated. Once inside the wall, that moisture cannot exit through the painted face at the normal rate. It is trapped.
In a Chicagoland winter, trapped moisture is a specific danger. When water freezes inside a brick or mortar joint, it expands approximately 9 percent by volume. Over dozens of freeze-thaw cycles per winter, repeated expansion inside a moisture-saturated brick causes the face to flake, crack, and eventually pop off in what is called spalling. The area around a paint failure point is often the first place spalling appears, because that is where the moisture concentration is highest.
The problem compounds with time. Older paint films develop hairline cracks and adhesion failures. Each crack admits more water while still blocking vapor release over most of the surface. After several decades, the wall has established moisture distribution patterns driven by the paint film, and the accumulation of freeze-thaw damage starts accelerating.
For Winnetka homes built in the 1920s and 1930s, Winnetka’s housing stock primarily uses soft Chicago common brick laid with original lime mortar. That mortar was designed to flex with the brick over its service life. By the time a homeowner considers paint removal on one of these properties, the paint film may have been running a moisture trap for 50 or 60 years. Understanding what the paint has been doing to the wall during that period is essential to deciding whether removal is the right call and how aggressively to proceed. See our guide to Chicago common brick history for more on why soft brick behaves differently from post-war construction.
When Removing Paint From Brick Is the Right Call
The clearest case for paint removal is a hard post-war brick home where the paint is relatively recent, single-layer latex, and the brick itself is sound. Post-1950 machine-pressed brick is dense and durable. It tolerates low-pressure chemical stripping without losing meaningful surface material, and restoring the original brick face improves both appearance and vapor permeability.
In Northbrook and Glenview, where the housing stock dates primarily from the 1960s through 1980s and uses hard machine-pressed brick, paint removal is relatively straightforward when the paint layers are not deeply embedded. Northbrook’s builder-grade mortar from the post-war boom era is now past the 40-to-60-year mark, and homes being assessed for tuckpointing frequently also have painted sections from the same period. A professional chemical strip followed by a low-pressure rinse at 800 to 1,200 PSI can restore the surface in two or three passes without meaningful surface loss.
Paint removal also makes sense when you are planning a tuckpointing project. Paint in mortar joints affects mortar adhesion during repointing. Removing paint before tuckpointing allows proper joint preparation and ensures the new mortar bonds to clean masonry surfaces rather than to a paint film. Our professional power washing service is often the first stage of a combined cleaning and tuckpointing project for this reason.
On Victorian-era masonry homes across the North Shore, the case for paint removal depends heavily on the brick condition. Victorian homes from the 1880s and 1890s used some of the softest brick in the regional housing stock. If those homes have not had paint removed previously and the current paint film is stable and uncracked, a qualified assessment before any removal work begins is required.
The High-Risk Cases: Historic and Soft Brick
Evanston presents the most complex paint removal landscape on the North Shore. The city has the oldest residential brick stock in our service area, with a median home age of 1939 and many properties dating to the 1890s through 1920s. The common brick used in pre-1920 Evanston construction is soft and porous in a way that post-war brick is not. It absorbs chemical strippers differently, releases paint less cleanly, and has less surface integrity to withstand even low-pressure rinsing.
Evanston’s documented pattern of prior Portland cement damage makes this more complicated. Many Evanston homes were repointed with Type S or Portland cement mortar during the mid-20th century, which is harder than the soft original brick. This mortar mismatch causes moisture to accumulate inside brick and spalling to begin at the joint edges, as documented in NPS Preservation Brief 2. The Portland cement repairs are already compromising the brick before paint removal is considered. On a wall where the brick is already weakened at the joint edges, paint removal must be treated as a high-stakes operation where any additional surface stress can cause face loss.
For Evanston homes near Davis Street, those built as greystones with Indiana limestone facing over common brick present a further complication. Limestone and common brick respond differently to chemical strippers. The same formulation that loosens paint from brick may react with limestone surfaces, and the pressure safe for brick may be too aggressive for the more brittle stone. Multi-material facades require staged chemistry and separate pressure settings.
In Kenilworth, where many homes date to the planned community’s early 1900s development and feature custom-fired brick with ornamental stone accents, paint removal falls under the category of historic restoration work. The village’s building standards encourage historically sensitive repairs. Any paint removal on a Kenilworth property carrying local or National Register significance should be scoped in consultation with a preservation-experienced contractor.
Methods That Will Damage Your Brick
Three methods appear repeatedly in the stories homeowners tell us when they show us brick that has been permanently damaged by a previous removal attempt.
Sandblasting is the most damaging. It removes the hard surface layer from brick, exposing the softer interior material that weathers faster and absorbs more moisture. NPS Preservation Brief 6 documents this damage pattern explicitly, noting that abrasive cleaning removes the weathered skin of the brick and increases its susceptibility to future weathering. Once a brick face has been sandblasted, the damage is permanent. You are now living with accelerated future deterioration built into the surface of every brick.
High-pressure washing at 2,500 PSI or above, which is standard consumer washer output, erodes mortar joints along with the paint. You can verify this damage by running your hand along the mortar joints after pressure washing: if you feel gritty material loosening and the joints feel softer or more recessed than before, the pressure has been extracting mortar. On soft historic brick, high-pressure washing also removes the brick surface itself. The damage is subtle at first and catastrophic over several applications.
Muriatic acid at high concentration is sometimes proposed for paint on brick. At the dilutions appropriate for efflorescence removal, muriatic acid is manageable on hard brick when properly neutralized. At higher concentrations or without proper neutralization, it attacks mortar and the calcium compounds in brick. It is never appropriate as a primary tool for paint removal, and it is never appropriate in any form on soft historic brick or limestone.
For the correct approach to cleaning brick without causing damage, see our guide to how to clean brick safely.
The Correct Method: Chemical Stripping
Professional paint removal from brick starts with identifying the paint type and layer count. Latex and oil-based paints respond differently to different stripper chemistries. Multiple paint layers require more dwell time or multiple applications. A test panel in an inconspicuous area reveals how the specific brick and paint system will respond before committing to the full facade.
Gel strippers and poultice systems are the two primary formats. Gel strippers cling to vertical surfaces during the dwell period and are removed by low-pressure rinsing. Poultice systems draw paint out of pores into a carrier material as they dry, which is particularly effective on paint that has penetrated deeply into porous brick. Most complete removal projects use both formats at different stages.
Dwell time is where chemical stripping works. A gel stripper applied for 12 to 24 hours does the chemical work of paint removal with minimal mechanical effort during removal. Shortcutting dwell time means incomplete release, which leads to using more mechanical pressure during rinse, which means more surface stress on the brick.
After stripping, the wall must be assessed for what the paint was hiding. Efflorescence that was masked by paint becomes visible. Mortar deterioration that was not detectable through the paint film becomes apparent. This is actually useful information, but it means a paint removal project frequently reveals a tuckpointing need that was not visible before. Planning for that possibility in the project scope avoids the situation where a freshly stripped wall with deteriorated mortar joints is left without proper maintenance going into a winter season.
The North Shore’s Victorian-Era Painted Brick
Painted Victorian homes appear throughout the North Shore, particularly in Winnetka and Wilmette, where builders from the 1890s through 1910s used soft common brick for residential construction that sometimes received paint finishes generations later. Wilmette’s lake-proximity humidity and high water table mean moisture stress on these homes is constant, not seasonal. Paint on an already moisture-stressed wall compounds the problem over decades.
On a Winnetka Victorian where the paint film is intact, is not causing visible spalling, and the wall is stable, the calculus for removal is different than it would be on a newer home. Many older Winnetka homes carry documented prior Portland cement damage from mid-century repointing work, meaning the brick already has internal stress fractures from mortar harder than the brick it contacts. You need to weigh what the removal process will put that brick through against the long-term benefit of restored vapor permeability.
The honest recommendation on an older Winnetka home with stable painted brick is a professional assessment before committing to removal. Testing brick hardness, checking mortar condition, and evaluating whether the paint is actively causing spalling versus simply being present are the inputs to a sensible decision. See our related post on waterproofing myths and whether you should seal brick for more context on when surface treatments help and when they hurt.
Deerfield homes from the 1960s to 1980s present a different situation: these properties use hard machine-pressed brick that was painted in some cases during exterior renovations. The documented steel lintel rust problem in Deerfield, where lintels above windows corrode and push brick outward, is sometimes concealed under paint. Paint removal on a Deerfield home should include careful inspection of the masonry above window and door openings for the telltale horizontal cracking and rust staining that indicates lintel corrosion.
When Leaving the Paint Is the Better Call
There are clear situations where leaving the paint in place, or stabilizing it rather than removing it, is the professional recommendation.
The paint is on pre-1920 soft brick with documented or suspected prior Portland cement damage. The brick face is already compromised. Removal at any pressure poses meaningful risk of accelerating face loss on brick that cannot be restored once damaged.
The brick shows active spalling at paint failure points and the wall is stable otherwise. Removing the paint accelerates the deterioration cycle in the short term. The priority here is addressing the mortar condition and brick damage before removal is considered.
Multiple heavy layers of oil-based paint have penetrated deeply into porous brick over decades. The chemistry required to release deeply embedded oil-based paint is more aggressive than typical water-based systems, and the dwell times needed raise chemical exposure concerns for surrounding materials including wood trim, window frames, and adjacent stone elements.
The paint is the only thing holding a deteriorated wall surface together. On walls where the mortar is in very poor condition and the paint film has been bridging cracks and holding loose material, removal creates an immediate maintenance emergency. Tuckpointing must precede or accompany removal in this case.
If you are unsure which category your home falls into, the answer is a professional assessment. Our brick spalling post covers the deterioration mechanisms that paint removal either helps or worsens depending on the situation.
Evanston: The Highest-Risk Paint Removal Context
In Evanston, we regularly assess homes from the 1895 to 1920 period that have been painted at some point, often multiple times. When we test these walls, we find brick with surface hardness lower than Type N mortar (minimum compressive strength 750 PSI). That means even Type N, the softest standard Portland-bearing option, is harder than the brick. The correct repair mortar for these homes is Type O (minimum compressive strength 350 PSI) or lime putty with no Portland content.
On a 1908 Evanston greystone with Indiana limestone facing and common brick on the sides and rear, the sides and rear may be candidates for chemical paint removal with careful low-pressure rinsing. The limestone front facade requires entirely different chemistry and hand removal. A single contractor who does not distinguish between these surfaces will cause damage on at least one of them.
Evanston is the highest-risk paint removal context in our service area. It requires a contractor who has tested the specific wall, understands historic brick behavior, and has a plan that does not include sandblasting or consumer-grade pressure washing.
For context on how historic North Shore masonry differs from modern construction, see our post on Victorian masonry care and the broader discussion of historic masonry restoration across Chicagoland.
Moisture Management After Paint Removal
After paint removal, homeowners often ask whether they should seal the brick. Breathable silane or siloxane penetrating sealers allow vapor to pass through while blocking liquid water absorption. These are appropriate on clean, unpainted brick in good condition. Non-breathable film-forming sealers recreate the same moisture trap as the paint you just removed. For a full discussion of when sealing helps and when it hurts, see our post on waterproofing myths.
After paint removal and tuckpointing are complete, the right maintenance path is no film-forming sealer, regular joint inspection every 5 to 7 years, and attention to any surface treatments that reduce vapor permeability.
Silica Dust and Safety During Paint Removal
Paint removal by any method that includes grinding, abrasive blasting, or significant mechanical scraping on masonry generates silica dust. Under OSHA 29 CFR 1926.1153, the permissible exposure limit for respirable crystalline silica is 50 micrograms per cubic meter as an 8-hour time-weighted average. Chemical stripping minimizes silica dust generation by reducing the need for mechanical removal, which is one of the practical safety advantages of the chemical approach beyond brick protection.
Homeowners should stay clear of removal work in progress regardless of method, particularly on painted masonry where the paint itself may contain lead if the home dates to before 1978. Lead paint on brick requires specific handling and disposal protocols before any removal work proceeds.
Getting Paint Removal Right on Your Home
The starting point is an honest assessment of what you have: the brick type, the paint history, the mortar condition, and the wall’s current moisture behavior. A professional who tests the brick hardness, reviews prior repair history, and evaluates the paint system before proposing a method is doing the job correctly.
Delta - Masonry and Tuckpointing has been working on North Shore and Chicagoland masonry since 1987. We assess painted brick on homes across Evanston, Winnetka, Wilmette, and the northwest suburbs before recommending a removal approach, because the recommendation depends on what is actually there. Paint removal done correctly restores your brick’s ability to breathe. Done incorrectly, it does permanent damage that cannot be reversed.
To schedule a free on-site assessment, call (847) 713-1648 or contact us online.
A paint film on 100-year-old Evanston common brick is a moisture trap. Removing it wrong is worse than leaving it on.