Cracks in house walls can be concerning, but not all of them indicate a serious problem. Knowing how to distinguish between harmless cracks and those that require urgent attention is essential to ensure your home’s safety.
Here we explain the most common types of cracks, when to worry, and how to take action.
Types of Cracks in Walls
There are different types of cracks that can appear on the walls of a house, and not all of them are equally dangerous. Identifying their origin is key to knowing whether intervention is necessary.
- Superficial Cracks: These are the most common and usually appear in the paint layer or plaster. They are typical in newly built properties due to material drying or temperature changes. They generally do not pose a structural risk and can be easily repaired with filler or paint.
- Cracks in Masonry: These are deeper and appear in the bricks or blocks of the structure. Some may be harmless, such as those caused by natural settlement of the building, but others may indicate more serious issues that should be assessed.
- Structural Cracks: These are the most dangerous and affect structural elements such as load-bearing walls, beams, or pillars. They often appear diagonally or in a zigzag pattern. If left unaddressed, they can compromise the stability of the building. The presence of structural cracks requires immediate evaluation by a professional.
Horizontal Cracks in Walls: Why Are They Dangerous?
Horizontal cracks in walls, especially on load-bearing walls or exterior walls, are often indicative of a serious problem. These cracks can be caused by foundation movement, uneven settlement, or structural overload.
This type of crack can compromise the integrity of the building, and it is essential to act quickly to prevent further damage. If you detect horizontal cracks, we strongly recommend not attempting to repair them yourself. Instead, contact a specialist who can assess the root cause and determine the necessary intervention.
When Should You Worry About Cracks in Your Home?
Not all cracks in the walls of a house are a cause for alarm. However, certain signs indicate that action is necessary:
- Size of the Crack: Cracks wider than 3 mm should be evaluated by a professional, especially if they run continuously along the wall.
- Location: Cracks that appear near doors, windows, or on load-bearing walls are more concerning than those found on non-structural areas. These may indicate movement in the building’s structure.
- Progressive Growth: If you notice a crack is growing or spreading over time, it is a clear sign of a potential structural issue that requires immediate assessment.
- Shape of the Crack: Diagonal or stair-step cracks are often more serious, as they are commonly associated with foundation problems or structural shifts.
Cracks in Old Houses
In old houses, it is common to find cracks due to the natural wear and aging of materials. Some of these cracks may not pose an immediate problem, but it is important to monitor their progression. If an existing crack changes shape, expands, or new cracks appear in the same area, it could be a sign of a structural issue that requires attention.
Additionally, in houses over 50 years old, cracks in load-bearing walls or near windows should be assessed carefully, as they may be related to the deterioration of the foundations or the materials used in the original construction.
Cracks at Home: Solutions According to the Type
Depending on the type of crack and its severity, the solutions may vary:
- Superficial Cracks: These can be repaired by applying special crack filler and repainting the affected area. They usually do not require professional intervention.
- Cracks in Masonry: If the cracks are not deep, they can be repaired with a specific masonry sealant. However, if the cracks continue to expand or are too large, a more in-depth assessment by a specialist is necessary.
- Structural Cracks: In the case of cracks in load-bearing walls or beams, it is essential to carry out a structural study. In some situations, it may be necessary to reinforce the foundations or undertake major works to ensure the safety of the building.
What to Do if You Detect Cracks in Your Home Walls
If you have noticed cracks in your home’s walls, the most important thing is to act appropriately depending on the nature of the crack. For small superficial cracks, repairs are simple and can usually be done by yourself.
However, for larger or structural cracks, it is essential to have a housing inspection expert assess the situation. We have a team of professionals who can help you determine the condition of the cracks in your home and recommend the best solutions to maintain your property’s safety.
When Should You Contact a Professional?
You should seek professional help in the following situations:
- Horizontal or Zigzag Cracks: These often indicate structural problems that require expert evaluation.
- Cracks in Load-Bearing Walls or Beams: These can compromise the stability of the building and should be assessed immediately.
- Progressively Expanding Cracks: If a crack keeps growing, the problem must be addressed before it becomes a serious threat.
How Can We Help You?
We offer a comprehensive wall crack inspection service to detect any structural problems and propose solutions tailored to your situation.
If you live in Barcelona and have noticed cracks in your home, don’t hesitate to contact us for a professional inspection. We will help you determine the severity of the cracks and carry out the necessary repairs to ensure your property’s integrity.
Cracks in your home’s walls are not always a cause for alarm, but it is crucial to know when to worry. Superficial cracks may be harmless, while structural cracks can compromise the safety of the building. Identifying the type, location, and size of the crack will help you make informed decisions about the necessary repairs.
If you detect cracks in your home, contact a specialist for a full evaluation. We provide a professional inspection service to ensure your home is in optimal condition.
