GROUTING & INJECTION
Grouting and Injection Stops Water at the Source
Engineered solutions to stop active water infiltration, fill subsurface voids, stabilize foundations and restore structural integrity across British Columbia.
The Damage is Often Happening Inside the Structure
A hairline crack that appears stable may be actively directing water toward reinforcing steel.
An isolated leak in a below-grade wall may be the visible end of a larger infiltration pathway driven by hydrostatic pressure.
A slab that has begun to settle can indicate hidden voids or inadequate support beneath the surface.
By the time corrosion, uneven surfaces or structural movement become visible, the underlying condition may have been developing for months or years.
These are not just cracks or leaks.
They are waterproofing, foundation stability and structural performance problems. They need a contractor who identifies where the water is moving, where support has been lost and what is driving the condition before selecting an injection system.
An isolated leak in a below-grade wall may be the visible end of a larger infiltration pathway driven by hydrostatic pressure.
A slab that has begun to settle can indicate hidden voids or inadequate support beneath the surface.
By the time corrosion, uneven surfaces or structural movement become visible, the underlying condition may have been developing for months or years.
These are not just cracks or leaks.
They are waterproofing, foundation stability and structural performance problems. They need a contractor who identifies where the water is moving, where support has been lost and what is driving the condition before selecting an injection system.
Stop the Problem at its Source
Grouting and injection can seal water pathways, restore concrete continuity and stabilize underlying soils or voids without major demolition or excavation.
Whether you are dealing with an active below-grade leak, settlement beneath a slab, structural cracking or unstable ground conditions, Retro selects the material and method around what the structure actually needs.
Whether you are dealing with an active below-grade leak, settlement beneath a slab, structural cracking or unstable ground conditions, Retro selects the material and method around what the structure actually needs.
Grouting and Injection Services
We provide targeted injection and grouting methods tailored to the source of the water infiltration, cracking, settlement or loss of support.
Cracked concrete that is leaking or losing structural continuity
Retro selects epoxy or polyurethane injection based on whether the crack requires structural repair, water sealing or both.
Active water infiltration in below-grade structures
Polyurethane systems are injected into the infiltration pathway to react with moisture, expand and stop water at its source.
Slabs or foundations with hidden voids and declining support
Specialized grouts fill subsurface voids and restore support conditions beneath slabs, foundations and other concrete elements.
Loose or unstable soils affecting foundation performance
Compaction and permeation grouting improve ground conditions, reduce settlement risk and strengthen soils without extensive excavation.
CASE STUDY EXAMPLE
Grouting and injection in an occupied residential parkade, completed on schedule
A Metro Vancouver residential parkade with active water infiltration, concrete deterioration and corrosion damage required coordinated grouting, crack injection and waterproofing restoration while remaining open to residents.
Retro assessed the structure, identified the infiltration pathways and void conditions and specified the appropriate injection systems for each location. The work was completed across four phases without a full parkade closure.
Retro assessed the structure, identified the infiltration pathways and void conditions and specified the appropriate injection systems for each location. The work was completed across four phases without a full parkade closure.
42KSq. Ft.
Restored
4 Phases
Zero full closures
0 Delays
Completed on schedule
Industries we serve
Retro delivers grouting and injection solutions across commercial, residential, institutional and infrastructure assets throughout British Columbia.
Parking structures and parkades
Below-grade parkades are exposed to hydrostatic pressure, chloride contamination and persistent water ingress that can accelerate corrosion throughout the structure.
Commercial and mixed-use buildings
Foundation leaks, slab settlement and structural cracking can be addressed while tenants and building operations remain in place.
Strata and multi-residential buildings
Retro coordinates injection work with strata councils, property managers and residents while maintaining access wherever possible.
Infrastructure and institutional facilities
Bridges, tunnels and public buildings require injection and grouting systems that meet demanding safety, access and structural performance requirements.
Placeholder building and location
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Outcome: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed nec quam iaculis, pretium erat cursus, volutpat augue.
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Placeholder building and location
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Outcome: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed nec quam iaculis, pretium erat cursus, volutpat augue.
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Why Choose Retro for Grouting and Injection
Retro was built for repairs where the visible leak, crack or settlement is only the surface evidence of a deeper problem.
For more than 35 years, we have worked with engineers, consultants, property managers and asset owners across British Columbia who needed a contractor that could diagnose the condition, select the right system and execute it without unnecessary disruption.
Our work is diagnostic-first because injection success depends on understanding the pathway, pressure, movement and material conditions before anything enters the structure.
When the problem is hidden and the consequences of selecting the wrong system are significant, Retro brings the specialist experience the project requires.
For more than 35 years, we have worked with engineers, consultants, property managers and asset owners across British Columbia who needed a contractor that could diagnose the condition, select the right system and execute it without unnecessary disruption.
Our work is diagnostic-first because injection success depends on understanding the pathway, pressure, movement and material conditions before anything enters the structure.
When the problem is hidden and the consequences of selecting the wrong system are significant, Retro brings the specialist experience the project requires.
36+ Years of Local Resillience
Retro has been restoring BC structures since the late 1980s. Decades of experience means faster diagnosis, fewer surprises, and specs built for BC's climate and conditions.
9,455+ Restoration Projects Completed
In specialty contracting, experience is the ultimate risk-mitigator. If it’s a concrete or structural challenge, we’ve seen it, solved it, and warrantied it.
Surgical Accuracy, Zero Disruption
We specialize in high-traffic, live environments (stadiums, transit, occupied residential). We plan meticulously so your operations never stop.
Grouting and Injection Fixes the Problem at the Source. Here's What That Looks Like in Practice.
Epoxy is generally used to bond crack faces and restore structural continuity in concrete. Polyurethane reacts with moisture and expands, making it suitable for stopping active water infiltration. The correct material depends on what the crack is doing.
Yes. Polyurethane injection can be highly effective for active leaks in foundations, parkades, retaining walls, tunnels and other below-grade structures. The infiltration pathway must first be identified so the repair addresses the source rather than only the visible exit point.
No. The crack must be assessed to understand whether it is active or stable, dry or wet and structural or non-structural. Some cracks may require monitoring, movement accommodation or a different repair approach.
Retro reviews crack patterns, staining, pressure conditions, joints, penetrations and adjacent waterproofing. The visible leak location may not be the original entry point, especially in below-grade structures.
Grout is injected through controlled locations beneath the slab to fill the void and restore support. The material, pressure and injection pattern are selected according to the size of the void and the condition of the surrounding soil.
Certain grouting methods may raise and stabilize a slab, but the feasibility depends on the cause and extent of settlement, the slab condition and the supporting soils. The site must be assessed before lifting is recommended.
Compaction grouting uses a stiff grout mixture to displace and densify loose soils. It can improve support conditions and reduce settlement risk beneath foundations and infrastructure.
Permeation grouting injects a lower-viscosity material into the spaces within loose soil. It can reduce permeability and strengthen the treated ground without significant excavation or displacement.
Most scopes require limited demolition and can be completed with the building operational. Access may be temporarily restricted around injection areas, but work is phased and coordinated in advance.
Yes. Retro coordinates with structural, geotechnical and building envelope consultants where the condition or repair scope requires engineering input.
Service life depends on the material, preparation, movement conditions and whether the source of the problem has been correctly identified. A properly specified and installed system can provide long-term performance.
Water may redirect if the full infiltration pathway was not treated. Retro assesses the surrounding conditions and documents injection locations so additional pathways can be evaluated and addressed where required.
The first step is a site consultation. Retro assesses the leak, crack, settlement or void condition and determines what investigation is needed before recommending a system.