Void Filling Services
Empty spaces beneath floors? Ground settlement concerns? Gaps under concrete? We specialise in fast and effective void filling using expanding polyurethane resin that stabilises ground and prevents future settlement without excavation or disruption.
Why Voids Form Beneath Properties
Soil Erosion
Water runoff, leaking drains, or underground streams can wash away soil beneath concrete slabs and foundations, creating dangerous voids.
Poorly Compacted Fill
Inadequate soil compaction during construction leaves air pockets that gradually collapse under structural weight over time.
Mining Subsidence
Historical mining activity creates underground cavities that migrate upward, eventually forming voids beneath surface structures.
Mining Subsidence
Historical mining activity creates underground cavities that migrate upward, eventually forming voids beneath surface structures.
Damaged or Collapsed Drains
Broken drainage systems allow water to wash away supporting soil, creating voids along pipe runs beneath buildings.
Settlement of Made Ground
Previously disturbed ground, infilled land, or reclaimed sites are prone to ongoing settlement and void formation.
Frost Heave Damage
Repeated freeze-thaw cycles can displace soil and create gaps beneath concrete surfaces in susceptible areas.
Construction Vibration
Heavy machinery, pile driving, or demolition work nearby can cause soil compaction and void migration.
Tree Root Decay
When large trees are removed, their decomposing root systems leave networks of voids beneath the ground surface.
Signs You May Have a Void
If you’ve noticed any of these warning signs, void filling could prevent costly structural damage and protect your property investment.
Hollow Sounds
Floors or concrete that sound hollow when tapped or walked upon.
Sinking or Settling Slabs
Concrete surfaces that have noticeably dropped or become uneven.
Cracks in Concrete
Especially cracks that appear suddenly or continue to widen over time.
Gaps at Building Edges
Visible spaces between concrete slabs and building foundations or walls.
Drainage Issues
Water pooling in areas where it didn’t previously, suggesting ground settlement.
Uneven Floor Levels
Interior floors that have developed noticeable slopes or height differences.
Why Choose Resin Injection for Void Filling
Fast Completion
Most void filling projects are completed in a single day, with the resin expanding and curing within minutes of injection.
Non-Invasive Process
No excavation, no demolition, and minimal disruption. Small injection holes are drilled and sealed, leaving surfaces virtually unmarked.
Precision Application
Engineers can control expansion precisely, filling voids completely without over-lifting or damaging existing structures.
Lightweight Solution
Our resin is significantly lighter than concrete grout, adding minimal load to underlying soil while providing maximum support.
Waterproof Properties
The cured resin is fully waterproof, preventing future water ingress and protecting against erosion and further void formation.
Immediate Load Bearing
Once cured, treated areas can bear full loads immediately—no waiting periods or phased loading required.
Cost-Effective
Void filling costs a fraction of excavation and replacement methods, with no spoil removal or material disposal fees.
Environmentally Responsible
Our resin formulations are eco-friendly and won’t contaminate soil or groundwater.
Works in Confined Spaces
Can be applied beneath existing structures, under floors, and in areas inaccessible to traditional methods.
Void Filling Applications
Resin injection can be used to remedy voids in residential, commercial, industry, and infrastructure settings.
Residential Properties
Suspended floors with voids beneath.
Garage and driveway settlement.
Patio and pathway stabilisation.
Extension foundations.
Commercial Buildings
Warehouse floor voids.
Car park deck support.
Loading bay stabilisation.
Factory floor repairs.
Industrial Sites
Heavy equipment foundations.
Storage tank bases.
Rail and crane track support.
Production floor repairs.
Infrastructure
Highway and roadway voids.
Bridge approach slabs.
Utility trench settlement.
Pavement base stabilisation.
Frequently Asked Questions
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The cost for void filling depends on void size, depth, location, and accessibility. Void filling is typically far more economical than excavation and replacement. Contact us for a free assessment and no-obligation quote for your specific situation.
Most residential void filling projects are completed in a single day. The resin expands and cures within minutes, and treated areas can typically be used immediately after completion.
Yes. When properly applied, our polyurethane resin void filling provides a permanent, stable solution. The material doesn’t degrade, compress, or wash away.
Let us help you!
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