1800 18 20 20Basement Construction Remedial Services
Protect your basement against structural weaknesses, concrete damage, and water intrusion—so it remains safe, durable, and serviceable for the long term.
Below are the most common remedial categories, the symptoms that signal a problem, and the corrective methods typically used to fix them.
Concrete Repairs
Typical Symptoms
Visible cracking (map, shrinkage, settlement, or structural cracks).
Staining at cracks or joints; moisture tracking and efflorescence.
Honeycombing, surface scaling, pop-outs, or laitance.
Uneven floors, loss of falls to drains, or step hazards.
Delamination/hollow "drumming" areas; local spalls—especially near corners/edges.
Corrective Methods
Crack injection
Epoxy injection for structural cracks; flexible PU injection for live/leaking cracks with movement or water.
Patch & section repair
Remove unsound concrete; apply bonding primer; reinstate with polymer-modified or structural repair mortars; reinstate cover and finish.
Stitching & dowelling
Stainless/galvanised bars or staples across cracks or interfaces to restore load transfer.
Surface re-profiling
Grinding, levelling mortars, and joint arris rebuilding to restore functionality and drainage falls.
Protective Sealing
Penetrating sealers or coatings to resist moisture ingress, abrasion, and chemical exposure.
Waterproofing & Water Intrusion Control
Typical Symptoms
Damp walls or floors; active leaks at construction joints or service penetrations.
Hydrostatic pressure signs: water beads or "sweating" on negative (internal) surfaces.
Efflorescence, mould/mildew, and musty odours.
Corrosion staining from reinforcement; blistering/peeling coatings.
Corrective Methods
Leak sealing injection
Hydrophilic/hydrophobic PU or micro-cement grouts to stop active water at cracks, cold joints, and wall–slab interfaces.
Membranes & coatings
Positive-side sheet or liquid membranes; negative-side cementitious/crystalline coatings where external access is limited.
Joint systems
Waterstops, re-detailing of construction/movement joints, and joint sealant renewal.
Surface re-profiling
Grinding, levelling mortars, and joint arris rebuilding to restore functionality and drainage falls.
Protective sealing
Penetrating sealers or coatings to resist moisture ingress, abrasion, and chemical exposure.
Foundation Reinforcement & Stabilisation
Typical Symptoms
Differential settlement: diagonal wall cracks, door binding, misaligned frames.
Tilt/rotation of retaining walls or columns; racking of partitions.
Slab deflection, rocking, or voids beneath slab edges (pumping).
Recurring joint steps or trip hazards after patching.
Delamination/hollow "drumming" areas; local spalls—especially near corners/edges.
Corrective Methods
Ground improvement
Resin injection to fill voids and compact weak zones; compaction or permeation grouting in granular fills to restore bearing and reduce permeability.
Structural strengthening
Local thickening, additional reinforcement, steel/FRP plates/wraps to increase capacity where design loads have changed.
Controlled lift
Micro-increment jacking or resin-assisted lift to re-establish levels, door clearances, and falls to drains—monitored in real time.
Concrete Spalling ("Concrete Cancer") Remediation
Typical Symptoms
Rust-coloured staining; cracking parallel to reinforcement lines.
Hollow-sounding areas under light hammer sounding.
Localised bulging/delamination; concrete breaking away to expose corroded steel.
Accelerated deterioration in humid or wet locations.
Corrective Methods
Break-out & preparation
Remove all unsound concrete; saw-cut perimeters; prepare a clean, profiled surface.
Rebar Treatment
Clean to bright metal; continuity checks; apply passivating primer; replace/augment bars where section loss is significant.
Corrosion mitigation
Install galvanic anodes or consider hybrid/cathodic protection in severe environments; apply anti-carbonation or chloride-resistant coatings.
Structural patching
Place compatible, low-shrinkage repair mortar; cure and finish; reinstate cover and protective coatings.
Follow-up sealing
Crack/joint sealing and hydrophobic impregnation to limit future ingress.
Our Delivery Process
Investigate & diagnose
Level surveys, moisture mapping, hammer sounding, cover meter scans, and (as needed) core tests or CCTV of drains.
Design the fix
Scope tailored to the cause: water management plus repairs, ground improvement plus lift, or structural strengthening.
Execute with control
Low-impact methods; staged works around site operations; continuous monitoring of movement/flows.
Verify & document
Watertightness checks, level re-surveys, pull-off/bond tests (as relevant), as-built records and maintenance advice.
Why Choose Rectify
Engineering-Led Solutions
Every project begins with understanding the cause of the problem, ensuring the right solution is delivered—not just a temporary fix.
Proven Structural Expertise
Trusted to deliver engineered solutions across residential, commercial and infrastructure projects.
Non-Invasive Technology
Our advanced, non-invasive technologies restore structural stability with less excavation, less mess, and minimal interruption.
Long-Term Confidence
We don't just repair today's problem—we strengthen your asset for long-term performance and lasting value.
Ready to Strengthen and Waterproof Your Basement?
We'll assess the issues, explain options (repair vs replacement), and deliver a clear program and budget.