Ground Penetrating Radar (GPR)
Concrete Scanning
Rebar & Corrosion Surveys
Structural Integrity Testing
3D Laser Scanning
Detailed Engineering Reports
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Ground Penetrating Radar (GPR)
Concrete Scanning
Rebar & Corrosion Surveys
Structural Integrity Testing
3D Laser Scanning
Detailed Engineering Reports
Contact Form

By submitting this form, you consent to us using your details to respond to your request. Your data is temporarily held for 30 days to ensure no inquiries are lost before being securely moved to our customer management system. Read our full Privacy Policy here.

Leak Seal Services in Swansea

Leak Seal Services in Swansea, South Wales

Even a small leak can become a serious problem if ignored. Water ingress doesn’t just look unsightly — it weakens structures, creates mould and shortens service life.


At Structural Repairs, we offer leak seal services in Swansea, providing engineered, lasting repairs that restore your structure to “new or better” condition. With decades of proven experience and certified expertise, we deliver solutions that are watertight, durable and compliant.

What Are Leak Seal Services?

Leak sealing is the process of introducing specialist sealants into voids or defective areas to stop leaks at their source.

This targeted method uses injection resins such as polyurethane or epoxy to waterproof structures from within.

  • Non-invasive process
  • Injection materials react and fill voids to form a durable barrier
  • Suitable across most materials and conditions
  • Quick to apply
  • Permanent, flexible and maintenance-free

The result? A strong, sealed structure that protects your asset for years to come.

For more information visit https://www.ciria.org
Ciria’s website provides respected guidance on concrete durability, waterproofing considerations, and structural remediation


Leak Seal Services in Swansea
Leak Seal Services in Swansea

Typical Leak Issues

Our leak seal solutions resolve a wide range of problems, including:

  • Hairline, structural or settlement cracks
  • Defective construction joints
  • Water ingress under pressure
  • Utility channel failures
  • Subsurface water channels
  • Condensation and moisture migration issues

Each leak poses a unique risk — whether aesthetic. Our engineers assess root causes and create a tailored sealing plan.

The Cost of Delay

  • Progressive structural decay
  • Material breakdown
  • Mould and damp
  • Loss of property value
  • Environmental pollution
  • Service interruptions

Timely leak sealing avoids these dangers — protecting your building and its occupants.

Leak Seal Services in Swansea a wall being sealed

Our Leak Seal Process

Every leak is unique, so our engineers follow a structured, reliable process:

1. Inspection & Diagnosis

  • Crack mapping
  • Water or dye testing
  • Determine root cause

2. Design & Resin Selection

  • Polyurethane, acrylic or epoxy systems
  • Tailor resin to environment
  • Develop injection grid

3. Preparation & Port Installation

  • Clean cracks and remove debris
  • Seal surface with temporary epoxy cap
  • Ensure substrate readiness

4. Sealing Phase

  • Fill entire leakage path
  • Continue until leak path is sealed
  • Seal injection points

5. Testing & Verification

  • Water testing where feasible
  • Record injection data
  • Provide photographic evidence

6. Aftercare & Support

  • Follow-up consultation
  • Concrete repair, crack stitching, carbon fibre reinforcement
  • {Maintenance guidance and aftercare plan}

The Benefits of Injection Repairs

Structural Repairs follows a engineered method to ensure reliable performance:

  • Non-invasive and efficient
  • Stops future leaks
  • Protects structure from corrosion and decay
  • Effective under hydrostatic pressure
  • Cost-effective compared to full rebuilds
  • Environmentally safe materials
  • Compatible with other structural repair systems

Our leak seal work leaves structures stronger, safer and drier than before.

The Structural Repairs Difference

Choosing the right contractor matters — here’s why clients across the UK choose us for leak seal services in Swansea:

  • Decades of experience in structural repair and waterproofing
  • Accredited and insured
  • Trusted by engineers, contractors and councils
  • One-stop structural service
  • Use of advanced polyurethane and acrylic systems
  • Concrete repair, resin injection, carbon fibre reinforcement, underpinning and more
  • Free initial consultation

We don’t just seal leaks — we solve root causes and ensure your structure performs better than ever.

Safety, Sustainability & Compliance

Leak sealing often takes place in occupied environments. We ensure:

  • Strict safety standards
  • Low VOC systems
  • Minimal disruption to occupants or operations
  • Sustainable repair strategies

Every project is managed with responsibility and respect for people and the environment.

Leak Seal FAQs

Can all leaks be sealed?

Well, it depends on the structure itself. But in most cases, yes – our range of injection systems can handle active, dormant or pressurised leaks.

Is resin injection permanent?

Yes. Properly designed and applied, it provides a flexible, waterproof barrier lasting decades.

Will I need to excavate?

No. Injection sealing is internal — minimal surface access is required.

Is the repair visible?

Almost never. Ports are removed and finishes restored to blend seamlessly.

Can the building remain in use?

Yes — most projects are completed with no operational downtime.

Book Your Free Leak Assessment

0300 030 1822
[email protected]
46 The Arches, Alma Road, Windsor SL4 1QZ
structuralrepairs.com

Free initial consultation and site survey available.

Structural Repairs — making buildings safer, stronger and leak-free for decades to come.