PU Grouting / Injection: Effective Leak Repair Solutions

Noticing water seepage or dampness in your home? These are clear indicators that it’s time for re-waterproofing, whereby PU Grouting can be one of the solution for seepage in Singapore. Whether it’s visible cracks allowing water ingress or compromised concrete integrity, PU injection waterproofing offers a robust remedy to seal cracks and prevent potential structural damages effectively.

What is Polyurethane (PU) Grouting / Injection?

Polyurethane (PU) Grouting / Injection is a specialized technique that involves delivering PU resin into cracks or voids in concrete, creating an impermeable barrier that prevents water entry, and rapidly mitigates water infiltration. Popular in Singapore’s high-humidity environment, this method effectively seals off leaks by injecting PU resin into identified concrete cracks, which expands upon water interaction, ensuring a lasting waterproof defense.

Causes for Concrete Cracks

Natural Settlement

Over time, buildings and structures settle into the ground, sometimes unevenly, causing stress and cracks in the concrete.

Excessive Load

Applying more weight than the concrete was designed to bear can cause cracks due to overload.

Shrinkage

During the curing process, concrete can shrink slightly, leading to the formation of hairline cracks.

Corrosion of Reinforcement Bars

The corrosion of steel bars embedded in concrete can expand and exert pressure on the surrounding concrete, causing it to crack.

Benefits of our PU Grouting / Injection Repair

Minimal Disruption

PU injection requires minimal excavation or drilling, ensuring that the repair work causes the least possible disruption to the surrounding area.

Long-lasting Durability

The durability of PU grouting ensures that once the resin solidifies, it creates a permanent barrier against moisture ingress, significantly prolonging the lifespan of the structure.

Cost-Effective

By preventing further damage and potentially costly repairs down the line, PU grouting proves to be a cost-effective solution for long-term waterproofing protection.

How Does Our PU Grouting / Injection Repair Services Work?

Inspection and Identification

The first step involves a thorough inspection to identify the source of leakage and the extent of the damage, crucial for PU grouting in Singapore.

Surface Preparation

Cleaning the area and removing debris/contaminants for proper PU adhesion.

Injection Port Installation

Small ports installed along cracks for precise PU grout delivery.

PU Grouting Injection

PU resin (hydrophobic or hydrophilic) injected through ports.

Curing and Evaluation

Allowing time for resin curing/expansion to seal cracks, followed by integrity evaluation.

FAQs

What is the difference between PU grouting and epoxy grouting?

PU grouting is flexible and water-reactive, good for sealing cracks within the concrete slab to prevent seepage. Epoxy grouting is strong and rigid, for structural repairs and doesn’t focus on waterproofing.

Is PU Grouting effective?

Yes, PU grouting is highly effective for sealing leaks and waterproofing purposes. Its strength lies in its ability to expand and seal voids completely upon contact with water, offering a reliable solution for preventing water damage, particularly in humid climates.

How long does PU Grouting / Injection last?

Typically, a well-executed PU injection waterproofing job can last for over 10 years, depending on environmental conditions and the structure’s maintenance. Regular inspections and maintenance can extend its longevity, making it a reliable solution for waterproofing in Singapore’s humid climate.

Ready to Seal and Secure Your Property?

Don’t wait for water leaks to escalate into costly repairs.
Our specialized PU grouting technique offers a rapid and reliable solution to protect your premises from water damage.