Soil StabilizationWhen there is a point of foundation sagging which needs repair and the structure is not heavy, it is possible that the cause is localized soil disruption. There may just be a small section of ground where the soil underneath the foundation of the building has shifted. This may be caused by a tree root growing into the soil, inadequate drainage of the water at that point on the property or even the drying out of the soil if there has been a drought or if water drainage was added where there wasn't any before.
In this scenario, concrete or polyurethane soil stabilization can be a good solution and is one of the most low impact ways to fix minor foundation issues. There are different methods of soil stabilization foundation repair which are used depending on the state of the soil, the amount of damage and the accessibility of the site. Mass Concrete UnderpinningAs the name suggests, mass concrete underpinning is where a hole is dug underneath the existing foundation and a block of concrete is introduced underneath to stabilize the earth. This is used in cases where there is minimal damage to the property and where we are trying to prevent more damage rather than lift any foundation sag.
This may seem like a straightforward solution but many things need to be taken into consideration such as the impact to the building of digging a hole to introduce the mass of concrete as well as whether the soil under the mass of concrete is solid and stable enough to be the new platform on which the foundation sits. Jet Pressure UnderpinningJet pressure underpinning is a less invasive procedure where concrete, polyurethane, resin or another chemical compound is injected into the soil underneath the foundation to stabilize loose soil. This method is often used where the sag is in the middle of a platform of stable foundation or where there may be structural concerns with digging around the existing foundations or where the soil is contaminated and should not be disturbed.
We carefully consider which material would be best to inject into the soil depending on the type of soil and what sort of environment surrounds it. Different foundation materials are resistant to different elements and interact with them in different ways. By using the right foundation material, we ensure that your new foundation will not need replacing ever again. Once the material is decided upon we bring in the necessary machinery to pressure fill the foundation soil and prevent further foundation damage. To do this, small holes are drilled into the sagging area and the liquid filler is injected evenly across the area. Because of the pressure of the material, it is possible to re-lift minor structures on top to the level of surrounding foundations to minimize the appearance of tile or concrete cracks. What's best for youIn all cases, our priority is ensuring the safety of those who use your building. We will only recommend what we believe to be the foundation repair option that most fits with your unique situation and that will last the test of time.
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