PU Grouting Injection

PU Grouting Injection in Singapore

About PU Grouting Injection

PU Grouting Injection is a specialised waterproofing technique that injects polyurethane resin into cracks, joints, or voids within concrete structures. When the PU material comes into contact with water, it reacts, expands, and forms a watertight seal, stopping active water ingress immediately.

This method is especially effective for live leaks, making it a preferred solution for basements, retaining walls, lift pits, and water tanks.

Where PU Grouting Injection Is Used

PU injection is ideal for:

  • Basement walls and slabs
  • Retaining walls
  • Lift pits and elevator shafts
  • Water tanks and pump rooms
  • RC roofs and slabs
  • Carparks and podium decks
  • Concrete cracks and cold joints
  • Active water seepage and leaks
  •  

PU Grouting vs Other Waterproofing Methods

PU injection targets leaks from within the structure, unlike surface-applied membranes. This makes it ideal when:

  • External waterproofing access is limited
  • Immediate leak stoppage is required
  • Structural cracks are the root cause
  • Water is actively flowing

Often, PU grouting is used together with surface waterproofing systems for comprehensive protection.

Interested In PU Grouting Injection? Contact Us Now.
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Why Choose Us For
PU Grouting Injection

F.O.C on-site inspection

Only our consultants and managers are allowed to give the onsite inspection; this is to ensure that recommendations & quotation are given accurately

Cost-effective Solutions

We offer cost-effective solutions catered for both residential and commercial clients

12 Months Warranty

We provide warranty period of 12 months to rectified areas to give our customers a peace of mind

Experienced BCA Approved Contractor

We are accredited Building & Construction Authority contractor. Therefore we have our responsibility to ensure all work abide to the authority quality guideline.

Our Methodology

  1. Leak Identification
    Our specialists locate cracks, cold joints, or seepage points causing water ingress.
  2. Drilling Injection Points
    Small holes are drilled along the crack line at calculated intervals.

  3. Installation of Injection Packers
    Packers are installed to allow controlled injection of PU grout.

  4. PU Resin Injection
    Polyurethane grout is injected under pressure, penetrating deep into cracks and voids.

  5. Expansion & Sealing
    The PU material reacts with water, expands, and forms a flexible, waterproof barrier.

  6. Finishing & Inspection
    Packers are removed, holes sealed, and the area checked for complete waterproofing.

Benefits of PU Grouting Injection

  • Stops active water leaks instantly
  • Expands to fill fine cracks and voids
  • Flexible material accommodates structural movement
  • Non-shrink and long-lasting
  • Minimal hacking or disruption
  • Suitable for both internal and external applications
  • Cost-effective leak repair solution

About Us

We are a locally registered company that provides the waterproofing services as the main core business and core service. Other services that complement to waterproofing are also provided so that we are able to service customers with under one roof and one point-of-contact service.

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Frequently Asked Questions (FAQs)
PU Grouting Injection in Singapore

Yes. When correctly applied by trained professionals, PU injection is designed to be a permanent, long-term waterproof seal. The material is durable and creates a lasting barrier within the concrete’s cracks and voids.

Yes, PU grout reacts upon contact with water, causing it to expand. This reaction makes it particularly effective for sealing live leaks, as it can quickly fill cracks or gaps where water is actively flowing.

Its ability to expand ensures a secure and durable seal, even in challenging conditions.

PU material maintains its flexibility, allowing it to adapt to minor structural movements without cracking or losing its integrity.

This makes it an ideal choice for applications where slight shifts or adjustments are expected, ensuring durability and reliability over time.

Only minimal drilling is required, making installation quick and hassle-free. There’s no need for major hacking, demolition, or extensive structural changes, ensuring your space remains intact and undisturbed during the process.

Costs can vary based on factors like the length of the crack, the severity of the leak, and how accessible the damaged area is. To help you better understand the situation, we provide free inspections and detailed quotations, ensuring you have all the information needed before making a decision.

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