Internal Wall Cracks: Understanding the Causes and Solutions

CEO Khai Intela
When internal wall cracks appear in and around your home, it can be easy to panic about the structural integrity of your house. However, with the expertise of Geobear, you can rest assured knowing that...

When internal wall cracks appear in and around your home, it can be easy to panic about the structural integrity of your house. However, with the expertise of Geobear, you can rest assured knowing that we'll inspect and identify the causes of these cracks in the internal walls of your house.

What Causes Cracks in Internal Walls of a House?

There are various reasons why internal wall cracks might form in your home. From faulty taping and water leaks to structural issues and vacant houses, the causes of cracks can vary. Let's explore some of these causes in further detail:

Faulty Taping of Drywall Panels

When drywall panels are installed, the seams are filled and covered with paper tape. If the tape doesn't properly adhere to the wall, it can peel away, leading to fine cracks. While this is not a major structural issue, it can be easily fixed with household glue.

Water Leaks

Water can enter your home through windows, doors, or the roof. Improperly sealed frames and old, leaking drains can also contribute to excess water in your home. When water saturates the walls, the plaster softens and deteriorates, resulting in cracks. It's crucial to identify and fix the source of the leak to prevent further damage.

Vacant Properties

Properties left vacant for extended periods are more susceptible to developing internal wall cracks. Fluctuations in humidity and temperature can cause the expansion and contraction of door frames, stud walls, and window frames, leading to cracking over time. While these hairline cracks can be easily filled, it's advisable to hire professionals to assess the structural integrity of the house.


Subsidence is every homeowner's nightmare, as it can cause multiple cracks internally and externally. It also affects doors and windows, causing them to become jammed. If you notice these signs, it's essential to call on the experts at Geobear to inspect and rectify the subsidence problem.

What Do Subsidence Cracks Look Like?

Subsidence cracks in internal walls are often diagonal and occur suddenly. They may also be mirrored on the external wall at the same location. These cracks are generally thicker than hairline cracks. If you suspect subsidence, it's crucial to have an expert assess the situation.

Should You Worry About Interior Wall Subsidence Cracks?

While small hairline cracks are usually harmless, larger cracks should be inspected. Subsidence cracks are often accompanied by other warning signs, such as misaligned windows and doors, sinking floors, puddles around the exterior, and skirting board separation. If you suspect subsidence, contact a skilled professional to confirm the issue.

Geobear: Your Solution for Internal Wall Cracks

At Geobear, we pride ourselves on offering groundbreaking subsidence solutions that are effective and long-lasting. Our innovative resin injection technology is eco-friendly and ensures the safety of your property. Our process involves:

  • Visiting your home at your convenience
  • Assessing the damage and inspecting the property
  • Determining the cause and developing a location-specific plan
  • Injecting the resin into small holes to fill gaps and stabilize the ground
  • Delivering a fast-acting solution without excavation work
  • Restoring the integrity of your home, eliminating cracks, and resolving jammed windows and doors

Our geopolymer resin injection method is adaptable, easy to control, and architecturally-friendly. It requires minimal time and guarantees exceptional results. If you're looking for reliable subsidence solutions, contact our friendly and professional team at Geobear today.

Internal Wall Cracks Image: Internal wall crack caused by subsidence