How Injection Waterproofing Works: A Comprehensive Guide

Injection waterproofing is an advanced, cost-effective method for repairing cracks and preventing water infiltration in concrete structures. This technique uses high-quality materials, such as epoxy and polyurethane resins, to seal cracks in concrete walls, slabs, and foundations. Whether it’s for residential or commercial properties, injection waterproofing helps address issues like dampness, leaks, and foundation damage.

Basic Steps in the Injection Waterproofing Process

The injection waterproofing process, while utilizing either epoxy or polyurethane, generally follows a consistent set of steps. The time required for the procedure varies depending on the size and complexity of the cracks being repaired.

1. Mount Injection Ports

Injection ports are mounted directly over the cracked area, simplifying the repair process without the need for extensive drilling. These durable plastic ports are securely fixed using epoxy or polyurethane resin, and the spacing between the ports depends on the size of the crack to ensure thorough coverage.

2. Seal the Concrete Surface

Once the ports are in place, a special paste is used to seal the ports and any visible cracks. This paste needs time to cure, usually up to 45 minutes, to ensure a strong bond and resist the injection pressure. All exposed cracks should be sealed properly, leaving the injection ports accessible for the next step.

3. Inject the Crack

The injection process begins by injecting paste through the lowest port. This paste fills the crack, working its way upwards until it begins to ooze out of the highest port, indicating full crack coverage. The ports are then removed one at a time, with additional paste injected to ensure the crack is entirely filled. Even paste compression during this stage ensures deep penetration, minimizing future leaks.

4. Drilling Holes for Injection (Optional)

In some cases, drilling holes around the cracked area may be required. These holes are drilled at a 45-degree angle to facilitate effective paste injection. The number of holes depends on the wall’s thickness and crack size. Once drilled, water is flushed through to assess the crack depth and clean any dust or debris before injection.

Following the preparation, paste is injected under pressure into the cracks. This method is particularly useful for sealing foundation cavities and preventing moisture buildup, leading to long-lasting waterproofing results.

Advantages of Injection Waterproofing

Injection waterproofing is a straightforward and durable solution for repairing concrete structures. Here are some key advantages:

• Cost-Effective: Compared to traditional repair methods, injection waterproofing is affordable and provides excellent value.
• Permanent Seal: The injected paste expands to fill cracks and voids, creating a permanent, water-resistant seal.
• Prevents Moisture Damage: This method effectively eliminates leaks in basements and walls, preventing mold, mildew, and other moisture-related issues.
• Non-Shrinking: Unlike cement-based repairs, the injection paste does not shrink, ensuring the crack remains sealed over time.

Why Choose Waterproofing Singapore?

At Work at height Singapore, we specialize in advanced injection waterproofing techniques. Our team of experts uses the best materials and equipment to ensure long-lasting, effective repairs. By choosing us, you can rest assured that your property will be free of leaks and moisture damage.

Contact us today for a competitive quote and to learn more about how our injection waterproofing services can protect your home or business!