Skip to the main content.

5 min read

Understanding Stair Step Cracks in Brick Walls: Causes, Solutions, and Prevention

Understanding Stair Step Cracks in Brick Walls: Causes, Solutions, and Prevention

Brick walls are a timeless feature of many homes and buildings, offering both beauty and durability. However, like any construction material, bricks can develop problems over time. One common issue homeowners might encounter is stair step cracks. These distinctive cracks appear in the brick walls of your home, leading to concerns about structural integrity and safety.

If you live in an area like Philadelphia, then listen up! In this blog, we will discuss what stair step cracks mean, what causes them, and why addressing them promptly is essential for maintaining the stability and longevity of your brick walls.

What Do Stair Step Cracks Mean?

Stair step cracks are a specific pattern of cracks that appear in brick walls. As the name suggests, these cracks resemble a set of stairs, zigzagging through the mortar joints between the bricks. This pattern is usually a sign that the wall is experiencing uneven pressure or movement.

So, why is this pattern concerning? Stair step cracks often indicate underlying structural issues. They are not just surface-level cosmetic problems; they can signify deeper problems with the foundation or the overall stability of the wall. Ignoring these cracks may result in more severe damage over time, making it important to address them early. Imagine noticing a stair step crack in your home's brick wall. At first, it might seem minor, but over time, you could see the crack widening and spreading. Eventually, this can compromise the entire wall's integrity, leading to costly repairs or even posing safety risks. You can guarantee that your home remains safe and sound by keeping a watchful eye over your brick walls.

Call us today


What is Causing Stair Step Cracks?

Stair step cracks in brick walls result from several factors, all of which relate to the stability and movement of the structure. Here are some common causes:

  • Foundation Issues: One of the primary reasons for stair step cracks is problems with the foundation. When the foundation settles unevenly, it causes the brick walls to shift, ending in the distinctive cracks. Soil movement, poor construction, or changes in moisture levels all contribute to foundation issues.
  • Environmental Factors: Weather has a big influence on brick wall stability. Where seasonal changes tend to be extreme, the constant freeze-thaw cycle causes bricks and mortar to expand and contract. Over time, this weakens the mortar joints and results in stair step cracks.
  • Water Damage: Water infiltration is another common cause of brick wall damage. When water seeps into the mortar joints, it erodes the material and cracks form. Additionally, prolonged exposure to moisture causes the bricks themselves to deteriorate, exacerbating the problem.
  • Structural Movement: Buildings naturally settle over time, but excessive movement stresses brick walls. This movement is due to a variety of reasons, including construction activities nearby, heavy traffic, or even seismic activity. When the structure moves, the rigid brick walls can crack under the pressure.

For example, a homeowner in Philadelphia notices stair step cracks appearing on their brick veneer. After a thorough brick wall inspection, it was found that the house's foundation had settled unevenly due to fluctuating water tables in the area. The combination of water damage and foundation movement caused the cracks, highlighting the importance of addressing underlying issues promptly.

Understanding the causes of stair step cracks is the first step in preventing further damage. By identifying these factors early, homeowners are able to take necessary actions to maintain the structural integrity of their brick walls.

Speak With Alec Today


Is it Common in Philadelphia?

Stair step cracks are quite common in Philadelphia, given the city's architectural history and the prevalence of brick construction. Many homes and buildings in Philadelphia are decades, if not centuries old, and have faced the wear and tear of time, weather, and environmental changes.

Historical Context: Philadelphia boasts a rich history with numerous buildings and homes dating back to the 18th and 19th centuries. These historic brick houses were built using traditional methods and materials, which, while durable, are not immune to the passage of time. The older the building, the more likely it is to experience issues like brick wall cracks due to settling and environmental exposure.

Construction Methods: The construction methods used in the past may not always meet today's standards. For instance, older brick walls might lack the modern reinforcements that help prevent structural issues. In Philadelphia, where many homes were built during rapid urban expansion periods, it's not uncommon to find brickwork cracks that have developed over time.

Environmental Factors: Philadelphia's climate plays a significant role in the occurrence of stair step cracks. The city experiences a full range of seasons, from hot, humid summers to cold, icy winters. The freeze-thaw cycles cause significant stress on brick walls, leading to expansion and contraction that eventually result in cracks. Additionally, the city's varying moisture levels impact soil stability, contributing to foundation issues that manifest as brick wall damage.


Why Professionals are Needed

Addressing stair step cracks in brick walls is not a task to be taken lightly. While it might be tempting to tackle these issues with a DIY approach, professional intervention is highly recommended for several reasons:

Accurate Diagnosis:

Professionals have the expertise to accurately diagnose the cause of stair step cracks. What might appear as a simple crack could be a symptom of a more serious underlying problem, such as foundation issues or large structural movement. An accurate diagnosis ensures that the root cause is addressed, not just the visible damage.

Proper Tools and Techniques:

Brick wall repair requires specialized tools and techniques that professionals are trained to use. From assessing brick wall deterioration to implementing effective brick wall restoration methods, professionals ensure that the repair is done correctly and safely. This includes using the right materials to match the original construction, which is particularly important for maintaining the aesthetic and structural integrity of historic buildings.

Long-Term Solutions:

Professionals provide long-term solutions that prevent the recurrence of brick masonry cracks. They can identify and address issues such as poor drainage, foundation instability, and inadequate construction practices that contribute to brick wall damage. By resolving these underlying problems, professionals help ensure the durability and stability of the brick walls.

Cost Implications:

While professional repair might seem expensive initially, it is cost-effective in the long run. Ignoring or improperly repairing stair step cracks may lead to more severe damage, requiring extensive and costly repairs down the line. For example, unaddressed cracks can compromise the structural integrity of the entire wall, leading to potential collapse and significant safety hazards.

Reach Out for a Free Estimate


Our Process

At APS Masonry Contracting, we specialize in tackling stair step cracks in brick walls with a proven, professional approach. Here’s why hiring us is your best choice over attempting a DIY fix:

Expert Inspection and Diagnosis:

We start with a thorough inspection of your brick walls, identifying the root cause of the cracks—whether it’s foundation issues, water damage, or structural movement. Our expertise guarantees that we diagnose the problem accurately, something that’s often missed in DIY assessments.

Customized Repair Plan:

Based on our diagnosis, we create a tailored repair plan. We use high-quality materials and industry-leading techniques to ensure the repairs are durable and blend seamlessly with your existing Philadelphia brickwork. Our plans are designed to address not just the cracks, but also the underlying causes to prevent future problems.

Professional Execution:

Our skilled technicians handle the repair process with precision and care. From stabilizing the foundation to repointing the mortar joints, we ensure that every step is done right the first time. This level of professionalism guarantees a long-lasting solution.

Cost-Effective Solutions:

While DIY repairs might seem cheaper initially, they often lead to more significant issues and higher costs down the road. By hiring APS Masonry Contracting, you invest in a solution that saves you money and stress in the long run. We provide detailed cost estimates upfront, so there are no surprises.

Peace of Mind:

Our process includes a thorough quality check to make sure the stability and integrity of your brick wall. We also offer preventative brick maintenance to help you avoid future problems. With APS Masonry Contracting, you can rest easy knowing your home is in expert hands.



Stair step cracks in brick walls are more than just an aesthetic issue—they signal significant structural problems. Addressing these cracks promptly with professional help is key to maintaining the safety and stability of your home.

At APS Masonry Contracting we bring expertise, precision, and peace of mind to every repair job. Don’t let minor cracks turn into major headaches. Contact us today for a thorough inspection and reliable repair solutions. Preserve the beauty of your brick walls by trusting the experts.

Call us today

Tuckpointing vs Repointing: Enhancing and Strengthening Brickwork

Tuckpointing vs Repointing: Enhancing and Strengthening Brickwork

In masonry, two techniques stand out for their vital role in maintaining and restoring the charm and stability of brick structures: tuckpointing and...

Read More
What is Mortar Made Of?

What is Mortar Made Of?

What mortar is important for any building project? Let us explain to you the key ingredients: cement, lime, sand, and water. Each ingredient helps...

Read More
Expert Brick Sealer Services | APS Masonry Contracting - Protect Your Masonry

Expert Brick Sealer Services | APS Masonry Contracting - Protect Your Masonry

If you want to protect your brickwork effectively, it's important to use brick sealer. This article provides detailed information on different types...

Read More