Polyurethane Injection Solutions

Boz Altınay Construction Industry Inc.

Permanent Solutions for Water Leaks and Soil Voids
At Boz Altınay Construction Industries Inc., polyurethane injection is a high-tech waterproofing and soil stabilization method designed to eliminate water infiltration and fill underground voids in structures such as basement walls, construction joints, tunnels, and other civil engineering works. This method ensures long-lasting sealing and ground reinforcement using advanced chemical resins.

What is Polyurethane Injection?
Polyurethane injection involves the use of single- or dual-component resins injected into cracks or leaking zones through high- or low-pressure pumps. When the resin comes into contact with water, it expands up to 10 to 20 times its original volume, completely filling and sealing even microcracks.

Advantages

  • Instant Water Stop: Reacts quickly upon contact with water to seal active leaks
  • High Expansion Capability: Penetrates deep into fine cracks with significant volume increase
  • Permanent Waterproofing: Maintains elasticity and structural integrity over time
  • No Need to Stop Water Flow During Application
  • Ideal for Soil Stabilization: Fills underground voids, prevents settlement
  • Fast and Easy Application: Minimal disruption, rapid results
  • Cost-Effective: Solves the issue without extensive renovation

Application Areas

  • Concrete retaining walls
  • Basement exterior walls
  • Elevator shafts
  • Tunnels and subway systems
  • Foundation waterproofing
  • Joint and crack repair
  • Water tanks and swimming pools
  • Dams and canal structures
  • Injection-based soil void filling

Application Process

  1. Inspection and crack analysis
  2. Installation of injection packers or nipples at crack zones
  3. Injection of polyurethane resin using pressure pumps
  4. Resin reacts and expands, sealing cracks and stopping water
  5. Excess material is cleaned and the surface is restored

Frequently Asked Questions (FAQ)

How durable is polyurethane injection?

When performed with high-quality resins and proper technique, polyurethane injection offers durable sealing for 10 to 25 years, with high resistance to moisture and water pressure.

Does the building need to be evacuated?

No. Since it is a localized process, the building can typically remain in use during the application.

Can cracks reappear after the application?

Properly applied injection provides a permanent seal for the treated area. However, new water ingress in different areas may require additional intervention.

Is it suitable for all types of cracks?

No. Polyurethane is ideal for active (leaking) cracks. For dry or passive cracks, epoxy injection may be more suitable. An expert inspection determines the best method.

How is soil injection done?

In weak or settling soils, holes are drilled and polyurethane is injected. The expanding resin fills voids and stabilizes the ground, preventing further subsidence.