Pressure Grouting Contractors Serving Vancouver and British Columbia
The measures taken to ensure the stability of a construction site depend on its underlying soil and rock formations. These conditions vary across Vancouver and British Columbia, so hidden voids, groundwater infiltration, and unstable soils are potential threats to the safety and performance of a construction project.
In such cases, our specialized pressure grouting services provide fast, effective stabilization without major disruptions to the site.
What Is Pressure Grouting?
Pressure grouting, also called power grouting or injection grouting, is a ground improvement technique that injects grout materials into soil, rock, or voids under controlled pressure. The goal is to fill gaps, bind loose particles, and control water flow.
Whether we use cement-based, chemical, or epoxy pressure grouting materials depends on your site’s specific conditions and what the goal is, like stabilizing loose soils, waterproofing against seepage, or filling cracks in deep foundations, for example. Common pressure grouting materials include cement-based, chemical, or epoxy grouting.
Some applications of pressure grouting include:
- Foundation underpinning and repair
- Soil stabilization and sinkhole remediation
- Void filling under slabs and structures
- Seepage control in below-grade construction
- Low-pressure grouting for delicate granular soils
- Epoxy pressure grouting for concrete crack sealing
Pressure Grouting Services We Offer
At VSS Shoring, we provide a full suite of power grouting methods. From low-pressure grouting in sensitive areas to high-pressure grouting for deeper soil densification, our team of experts conducts tests to determine which grouting method is ideal for you.
Compaction Grouting
As the name suggests, this high-pressure grouting technique is used to compact and stabilize loose or weak soils. It is carried out by injecting a stiff mortar-like grout that displaces soil as it expands, increasing its density and resulting in compaction. This method works well to reduce settlement under existing foundations without excavation.
Permeation Grouting
This low-pressure grouting method uses a fluid grout, like microfine cement, to saturate and bond granular soils. It is a method often used to control water seepage during excavations and into tunnels and soil stabilization, especially in sensitive zones near utilities or heritage structures.
Jet Grouting
A high-energy process that mixes grout with native soil in situ, forming cemented soil columns. Jet grouting is ideal for deep foundation support and excavation stabilization, especially in urban or restricted-access environments.
Void Filling
We use power grouting to fill abandoned tunnels, pipes, or cavities under slabs. This prevents structural settlement or collapse.
Epoxy Pressure Grouting
Epoxy resin is injected into fine cracks in concrete to restore structural integrity. This method is especially useful in infrastructure or basement repairs requiring precise, low-volume injection. Epoxy is also a popular grout choice for pressure grouting and waterproofing.
Why Pressure Grouting Matters
Whether you’re reinforcing a high-rise, supporting an industrial slab, or sealing a below-grade tunnel, pressure grouting offers plenty of benefits in complex environments.
Prevents Settlement
Densifies soil before construction or stabilizes existing foundations.
Controls Groundwater Intrusion
Creates waterproof barriers in basements, tunnels, and shafts.
Improves Soil Strength
Enhances bearing capacity in loose or variable soil conditions.
Minimally Disruptive
Versatile Application
Cost Effective
The Pressure Grouting Process
Every grouting project at VSS Shoring begins with a site-specific assessment. Working closely with geotechnical engineers, we identify specific zones requiring treatment. The in-depth analysis is followed by three stages.
Preparation And Installation
Based on the findings from the site assessment, we install injection points—either drilled or driven casings—to access the treatment zones. These points serve as access points for the grout to be delivered. We prepare the appropriate grout mix simultaneously. Depending on project requirements, this may be a cementitious, chemical, polyurethane, or epoxy pressure grouting compound, each mixed to a specific viscosity for optimal performance.
Grouting And Injection
The grout is then injected under controlled pressure to fill voids, seal cracks, or compact weak soils. Throughout this phase, our team closely monitors pressure and flow, adjusting them as needed in real time to avoid over-pressurization and ensure effective penetration.
This allows us precise control every step of the way.
Curing
Why Choose VSS Shoring?
As one of BC’s most experienced pressure grouting contractors, we bring decades of technical expertise and an intimate understanding of local soil conditions. This extensive expertise in complex foundational work allows us to accurately determine soil conditions and project needs.
We also understand that no two projects are alike – even if they are right next to each other. That is why we tailor our solutions to your project after careful assessment. That way, you know you are getting it done right, the first time around.
Frequently Asked Questions
What is the purpose of pressure grouting?
Pressure grouting is used to stabilize foundations, seal leaks, and strengthen ground conditions, all without the need for excavation or demolition. It can be used in both new and existing structures to prevent settlement in unstable soils.
When is pressure grouting needed?
Structures that may become unstable due to loose subgrade, voids beneath them, or water intrusion can benefit from pressure grouting to stabilize them.
How long does pressure grouting take?
Smaller jobs may take one to two days. Larger or more complex grouting operations—such as deep injections or multi-zone treatments—can take several weeks, depending on site access and depth.
What materials are used in pressure grouting?
We use cement-based grouts, chemical formulations, polyurethane, and epoxy resins. Each material is selected for the site conditions, structural requirements, and environmental constraints.
Is pressure grouting a permanent solution?
Yes. When carried out by experts, pressure grouting is a long-term solution for stabilization, waterproofing, or structural repair. It strengthens soils and structures without requiring ongoing maintenance.
Not Just
Shoring
