🏗️ Other Services
Concrete Repair &
Structural Strengthening
Expert concrete repair and structural strengthening services in Sri Lanka — restoring strength, durability and integrity to aging, damaged and deteriorating concrete structures. Trusted by government, hospitals and landmark buildings across the island.
Concrete Repair
Structural Strengthening
Spalling Repair
Rebar Protection
Service Overview
Expert Concrete Repair &
Expert Concrete Repair &
Structural Strengthening in Sri Lanka
Concrete is the backbone of every structure — but it is not permanent without proper maintenance and repair. We provide expert concrete repair and structural strengthening services that restore your building's original strength, extend its service life, and prevent costly future deterioration.
Sri Lanka's tropical climate is particularly aggressive on concrete structures. High humidity, monsoon rainfall, salt-laden coastal air and intense UV radiation accelerate the carbonation of concrete, corrode reinforcement steel, and cause progressive deterioration of the structural fabric. When left unaddressed, what begins as a surface crack or patch of spalling concrete becomes a serious structural risk.
Our team of certified specialists carries out detailed structural assessments, designs the correct repair strategy, and executes the works using premium Supercrete New Zealand repair systems — restoring structures to their full design performance.
Understanding the Problem
Why Concrete Structures
Why Concrete Structures
Deteriorate
Understanding the root cause of deterioration is essential to specifying the right repair. We investigate before we recommend — ensuring the correct solution every time.
- Carbonation — CO₂ from the atmosphere penetrates concrete, reducing its alkalinity and allowing steel reinforcement to corrode
- Chloride attack — salt from coastal air and de-icing salts penetrates concrete and destroys the passive protection around rebar
- Mechanical damage — impact, overloading, vibration and settlement cracking the structural fabric
- Thermal movement — daily and seasonal temperature cycles cause expansion and contraction cracking
- Poor original construction — inadequate cover, low cement content or poor compaction leaving the structure vulnerable from day one
- Water infiltration — sustained moisture contact causing rebar corrosion, freeze-thaw cycling and alkali-silica reaction
Our Services
Concrete Repair & Strengthening
Concrete Repair & Strengthening
Services We Provide
Spalling Concrete Repair
Removal of delaminated and carbonated concrete, rebar preparation, anti-corrosion treatment and reinstatement with approved repair mortars.
Crack Repair & Injection
Structural and non-structural crack repair using PU or Epoxy injection — restoring monolithic integrity and sealing water pathways permanently.
Structural Strengthening
Carbon fibre reinforced polymer (CFRP) wrapping, steel plate bonding and section enlargement to increase load capacity of columns, beams and slabs.
Rebar Protection & Treatment
Corrosion inhibitor application, protective coating of exposed reinforcement bars and cathodic protection systems for marine environments.
Heritage Building Rehabilitation
Sensitive restoration and repair of historic and heritage concrete and masonry structures — including the Colombo Municipal Council building.
Bridge & Infrastructure Repair
Concrete repair, anti-carbonation coatings and structural strengthening of bridges, flyovers, retaining walls and civil infrastructure.
Render & Facade Restoration
Removal of failed render, substrate repair and application of new protective render systems for external facades of all building types.
Structural Assessment
Condition surveys, carbonation testing, half-cell potential testing and detailed reporting to establish the extent of deterioration and repair strategy.
Void & Cavity Filling
Grouting and filling of voids, honeycombing and construction defects in concrete structures using cementitious or epoxy systems.
More Project References
Structural Repair Work
Structural Repair Work
Across Sri Lanka
Our Process
How We Approach
How We Approach
Every Repair Project
1
Condition Survey & Assessment
We conduct a thorough visual and non-destructive condition survey — including carbonation depth testing, half-cell potential mapping, cover measurement and crack mapping. This gives us an accurate picture of the extent and cause of deterioration before any repair is specified.
2
Repair Strategy & Specification
Based on the survey findings, we prepare a detailed repair specification — identifying repair zones, concrete break-out depth, surface preparation requirements, repair mortar selection, and anti-corrosion treatment for exposed reinforcement.
3
Concrete Removal & Preparation
All deteriorated, delaminated and carbonated concrete is carefully removed to sound substrate using controlled breaking and cutting techniques. The perimeter of each repair area is saw-cut square to avoid feather edges. Rebar is exposed, cleaned and treated.
4
Anti-Corrosion Treatment & Bonding
Exposed reinforcement bars are blast-cleaned and treated with corrosion inhibitor coating. A cementitious bonding agent is applied to the prepared concrete substrate to ensure maximum adhesion of the repair mortar.
5
Repair Mortar Application
Approved Supercrete NZ repair mortars are applied in the correct layers to the prepared substrate — built up to the original profile. Mortars are selected to match the strength, shrinkage and modulus of elasticity of the parent concrete.
6
Protective Coating & Finishing
Once repairs are cured, a compatible anti-carbonation or waterproof protective coating is applied over the entire surface — sealing the repaired and surrounding concrete from further atmospheric attack and ensuring a uniform appearance.
Advanced Strengthening
Structural Strengthening
Structural Strengthening
When Repair Isn't Enough
In some cases, concrete repair restores the section but the structure needs additional load capacity — due to increased loading, seismic upgrading requirements, or original design deficiencies. We provide structural strengthening solutions that increase the capacity of existing elements without the disruption and cost of demolition and rebuilding.
- Carbon Fibre Reinforced Polymer (CFRP) wrapping — applied to columns and beams to dramatically increase shear and flexural capacity with minimal added weight or size
- Steel plate bonding — structural steel plates epoxy-bonded and bolted to beams and slabs to increase bending resistance
- Section enlargement — reinforced concrete section added to existing elements — columns, beams and walls — to increase load capacity
- Post-tensioning — additional prestress applied to existing slabs and beams via installed tendons
- Foundation strengthening — micro-pile installation, underpinning and base slab enlargement for settlement-affected structures
Certified Repair Systems
Supercrete New Zealand Repair Products
All concrete repair mortars, bonding agents, anti-corrosion coatings and protective surface treatments we use are from the Supercrete New Zealand certified range — ensuring compatibility, performance and warranty validity. Products are selected to BS EN 1504 repair principles for structural concrete repair.
Applications
Structures We Repair
Structures We Repair
& Strengthen
Government & Heritage
Municipal buildings, courts, heritage structures and government facilities requiring sensitive restoration.
Healthcare Facilities
Hospitals, clinics and healthcare infrastructure — repair works designed to minimise disruption to operations.
Bridges & Flyovers
Bridge decks, piers, abutments and flyover structures — certified for traffic-bearing applications.
Commercial Buildings
Multi-storey commercial and residential buildings with aging concrete facades, balconies and structural elements.
Industrial Structures
Factories, warehouses, silos and industrial structures subject to heavy loading, vibration and chemical exposure.
Residential Properties
Homes, apartment buildings and villas with spalling balconies, cracked columns and deteriorating structural elements.
Common Questions
Concrete Repair & Strengthening FAQs
How do I know if my concrete needs repair or full replacement?▼
In the vast majority of cases, properly executed concrete repair is far more cost-effective than demolition and rebuilding. Our condition survey will identify the extent of deterioration and confirm whether repair is viable. Full replacement is only recommended where the structural integrity is so severely compromised that repair cannot economically restore it — which is relatively rare.
Will the repaired concrete look different from the original?▼
Repair mortars can be colour-matched to the original concrete. In most cases, the application of a uniform protective coating over the entire surface after repair eliminates any visible difference between repaired and original areas, giving the structure a clean, consistent appearance.
Do you carry out repairs on occupied buildings?▼
Yes — we regularly work on occupied buildings, including hospitals, offices and residential buildings. We plan repair works in phases to minimise disruption and coordinate closely with building management to ensure safety and continuity of operations throughout the project.
How long do concrete repairs last?▼
When carried out correctly using quality repair mortars compatible with BS EN 1504 repair principles, concrete repairs should last 20–30 years or more. The longevity depends on the thoroughness of the investigation, correct identification of the deterioration mechanism, quality of execution, and application of a suitable protective coating over the repaired area.
Related Services
Other Services We Offer
Is Your Concrete Deteriorating?
Our certified specialist will assess your structure and recommend the right repair strategy — free site visit, no obligation.