1800 18 20 20Slab Lifting / Jacking
How Sunken Slabs Can Undermine Your Property
Sunken slabs are not just a visual inconvenience; they’re a hidden danger that can seriously endanger the safety of the occupants and damage any machinery or equipment used on the sunken slab.
Concrete slabs, reinforced or unreinforced, have historically covered large soil areas, replacing brick pavers or rocks due to concrete’s smooth nature, compressive strength, and ability to seal joints against water intrusion. These slabs provide support and soil coverage in houses, warehouses, roads, marine environments, and hardstands.
Over time, slabs become uneven due to overloading, dynamic traffic from vehicles or machinery, water intrusion, or geological processes. This creates large voids, subsidence, or settlement, causing slabs to sink and shift — resulting in uneven surfaces, cracks, and major foundation issues that diminish property value and pose safety risks.
The Solution: Rectify’s slab jacking, soil stabilisation, and chemical underpinning services offer targeted, effective approaches to stabilise soil, fill voids, lift sunken slabs, and prevent future subsidence. By injecting an engineered resin solution beneath affected areas, a solid, durable base is restored to concrete slabs, recovering your property’s safety, aesthetics, and value.
Why Slab Jacking Is a Better Alternative to Concrete Replacement
Slab jacking and resin injection surpasses concrete replacement and mud jacking by precisely addressing the core issues causing uneven slabs.
Precision
Resin injection targets underlying issues with greater accuracy, ensuring more stable and level foundations.
Durability
The resin cures into a strong base, resisting further subsidence and offering lasting stability.
Minimal Disruption
Chemical underpinning and resin injection can proceed while structures remain in use.
Cost-Effectiveness
Addressing root causes prevents future repair expenses — concrete replacement doesn’t treat soil and can sink again.
Versatility
Effective across wider soil types and conditions for reliable results.
The Rectify Advantage
Unrivalled Experience
Qualified structural engineers, geologists, project managers, supervisors, and technicians with the highest expertise and training.
Cutting-Edge Technology
Investment in the latest technology, equipment, materials, and continuous review of global developments.
Quality Assurance
Commitment backed by quality workmanship, offering a 10 year warranty across our services.
Seamless Delivery
Non-invasive technique enables property occupancy without vacating homes or businesses.
Affordable Solutions
Competitive, affordable solutions compared to similar companies.
Before & After Treatment
Results showcased through visual comparisons demonstrating rectification success.
What Causes Concrete Slabs To Sink?
Various factors contribute to sinking floors and slabs, leaning or cracked walls, and jammed doors, stemming from ground changes beneath properties.
Soil Shrinkage and Swelling
Moisture fluctuations in clay-rich soils cause ground to swell when wet and shrink when dry, creating uneven foundation support and subsidence.
Tree Root Intrusion
Trees absorb significant soil moisture, causing shrinkage beneath foundations. Growing roots physically move soil, destabilising foundations.
Water Erosion and Leaks
Persistent leaks from broken pipes or poor drainage wash away or soften soil under foundations, reducing ground support capacity.
Excessive Weight Load
Adding extensions or conservatories without assessing additional load can exceed the soil’s bearing capacity, causing foundation sinking — common in residential expansions without proper ground assessment.
Construction and Excavation Nearby
Nearby excavation and construction disturb soil stability. Vibrations from heavy machinery and adjacent land support removal significantly impact subsidence risk.
Leaks from Plumbing
Unnoticed leaking pipes beneath houses erode or soften soil foundations over time, changing soil consistency and weight-bearing capacity.
Why Choose Rectify
Proven Techniques, Experienced Team
Established methods in slab jacking, resin injection, and level correction delivered by specialists.
Low-impact Delivery
Small injection points, neat reinstatement, and minimal interruption to your home or business.
Engineering Assurance
Site-specific treatment plans, monitored lift, and documented outcomes backed by a 10 year warranty.
Get a FREE Quote & Structural Assessment
We will inspect, map levels, and advise the best slab lifting solution for your property.