When You Have Cracks in Walls

Should you worry when cracks appear on the wall?

Don't ignore the appearance of cracks in walls, as it could actually be the first warning signs of serious and ongoing structural damage caused by subsidence. Cracks in walls of buildings are not uncommon. Although some may be relatively harmless, others may be signs of a foundation that is sinking or has been damaged (subsidence). If problematic cracks in the wall are not taken care of, the damage to the foundations can get even more expensive to repair and greatly decrease the value of the property. Our home subsidence repair experts in Orange County can help by leveling your house.


When may cracks on a wall be signs of a problem with the structure itself?

In so far as there are larger cracks that display the following characteristics, the foundation of the building may be weak:

  • The two sides of a wall are at different heights
  • There is a gap between doors and windows and their frames
  • Any cracks are wider than about 5mm

Cracks in walls that may be problematic usually originate at windows, doorways or the corners of buildings. Generally, smaller cracks that are hairline in nature are harmless. The appearances of these such cracks are commonly due to seasonal expansions and the contraction of soils beneath the building that take place over time, and can be easily patched and re-painted.

Cracks in brick walls can be a sign of subsidence.
Stuck Doors and Windows Foundation Issues
Cracking extensions are a sign of subsidence

Why do larger cracks appear on walls?

Large cracks may appear on walls when the foundation soil underneath a building shrinks or becomes weakened, allowing the entire or a section of the building to sink downwards- known as subsidence. This usually occurs when the soil beneath the building has become either too dry or too wet.

Likely causes:

  • Shrinking clay caused by dry spells
  • Excessive water due to broken pipes
  • Floods
  • Fillings that have been compacted poorly
  • Tree roots drawing water from the soil - caused by thirsty trees in dry weather


How can Geobear help?

Geobear ground engineering solutions are effective for cracks on walls in buildings of any size, including residential homes. Our house leveling services give Orange County homeowners the peace of mind that comes with a stable foundation.

We will first visit your home, assess the damage, and discover the cause. Our experienced engineers and technicians will establish the underpinning approach and create a plan that will be location-specific to your property.

Cracks often appear on walls on buildings that require a re-leveling- these can occur both inside and outside. The foundations of such properties will need to be raised and re-leveled. When the buildings are re-leveled, the cracks on the walls will unusually close up, leaving a mere trace that is hairline in nature, requiring a simple repair through patching and painting. Most importantly, the damage to the structure will be corrected now and into the future. We offer Orange County house leveling services that will keep your home from subsiding for many years.

The modern solutions Geobear team applies are vastly more effective and efficient than the traditional concrete underpinning. The house leveling solutions we offer Orange County do not just apply to concrete slab floors; we can also lift and relevel strip footings, ‘waffle-pod’ slabs, and raft slabs, whilst we can also fill in gaps on paths and driveways.

How can the cracks be treated?

The best solution for correcting large cracks on walls in the long-term is to lift, re-level and strengthen the ground under the building. This process to correct the levels is called underpinning. As the building is re-levelled, the cracks on walls may close together or become smaller (allowing the fine patching and repainting of plaster or render walls). It is common for windows and doors to once again function normally. Traditional underpinning or level correction methods involve the excavation of parts of the foundation, whereupon concrete can then be poured in, allowed to set, and the building can be raised up from the concrete blocks.

However, this traditional method may take a great deal of time (weeks or months). As a result of the work, residents may have to vacate the entire building or a section of it. Therefore a Geobear solution, which is founded on the original injection process we invented in 1983, has many beneficial aspects, namely time and convenience.


Benefits of Geobear´s ground engineering solutions:

  • Cracks on walls generally close up
  • Doors and windows will be freed up to function normally
  • We will not make a mess: there will be no dust, water, etc, to clean up
  • There is minimal disruption
  • No further damage will be caused to the house or the landscaping
  • With simple jobs, residents may remain in the building undisturbed
  • Our techniques are non-invasive: no floors will be removed or ground excavated
  • Simple, residential jobs are often completed in one day
  • The methods we use strengthen ground that is weak, thus making your home level, free of cracks, and more stable
  • The products and techniques are environmentally friendly.

GeobearUSA is the North American branch of Geobear International

Our Geopolymer Resin

Geobear uses the expansion properties of a mix of unique proprietary geopolymer resins to improve the bearing capacity of inadequate foundation strata to provide highly effective settlement and subsidence solutions. The resin is injected into the ground, where it expands, forcing the sunken part upwards and stabilizing the property. The geopolymer materials are strong, resilient, insoluble, and highly resistant to chemical attack and long-term degradation. Our geopolymers have even been classed as environmentally neutral.

Here at Geobear, we are extremely diligent and careful in the research and development of our solutions. Our resins have been developed and refined over 30 years, with properties confirmed by third-party testing and studies. The effectiveness of our resins has been proven over time, in a multitude of field applications and varying environments. We found that the behavior of the geopolymer resins does not change significantly, even when used in the presence of water.

This diligence practiced in the development of our solutions is matched by the way in which Geobear engineers will carry out the ground stabilization of all of our clients’ properties. They will work closely with every client to make sure that the work will be carried out in the least disruptive possible way.

Why Choose Geobear?

You can stay in the property. We isolate areas for treatment to allow you to stay in your home, our friendly team will talk you through the process.

Work completed in one day. The majority of projects on houses usually take one day, be it a gable wall, extension or conservatory subsidence

Insurance-backed warranty. We provide a full workmanship and materials guarantee.

Customer finance or credit card payments. We accept payment via card and can accept customer finance agreements.

No excavation or digging needed. Your home will be left clean and tidy. There is no construction work at all.

Provides the same result as underpinning. Our solution is the alternative to underpinning, providing the same result without the time, mess and hassle of major building work.

How Geopolymer Injection Compares

In comparison to concrete, which can need replacement, geopolymer offers a permanent solution. While using cement grouting, screw pillars, and underpinning require heavy machinery, geopolymer injection doesn’t turn your home into a construction site. Unlike all of these solutions, geopolymer doesn’t require excavation of the foundation soil.

With Geobear, our subsidence solutions are painless and easy. We simply drill small holes and inject our material. The process of introducing our geopolymer subsidence solutions to the affected area is faster and cleaner for all types of subsidence. Using geopolymer as a solution to subsidence is the most convenient and least disruptive option. Methods like underpinning, delivered by traditional building contractors, are becoming dated as modern technology evolves.

Learn more about how geopolymer compares by checking out our article on geopolymer vs. underpinning or viewing our handy comparison chart.

How do we resolve soil subsidence in just 2 days?





geopolymer injection foundation repair

At just 16mm they're typically the size of a 10p and often we don't even need internal access.

geopolymer injection foundation repair

In a quick and easy process we inject a special geopolymer that will expand and harden to support the property.

geopolymer injection foundation repair

Within just 15 minutes the geopolymer has expanded to fill any voids and stabilise the ground and is already 90% cured.

geopolymer injection foundation repair

You'll see the results instantly. Often cracks disappear and doors unstick as we raise the property.

Get a Subsidence Quote Now

Just answer a few simple questions to find out if we can help you and to get a quote.

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GeobearUSA is the North American branch of GEOBEAR International