High Pressure Crack Injection

• Active leaks — streaming or heavily weeping cracks where low-pressure cannot maintain contact.
• Previously failed repairs — cracks patched with hydraulic cement, silicone, or failed low-pressure polyurethane.
• Hairline cracks under 1/32" — too fine for standard surface ports; mechanical packers drill directly into the crack at 45 degrees for full-depth penetration.
• Not actively leaking? Low-pressure injection gives more material choice (epoxy or polyurethane) and is easier to control — use high-pressure only where low-pressure has failed or is impractical.

• DIY High-Pressure Kit — includes manual pump, 25 mechanical packers, and polyurethane resin. For homeowners and small contractors completing repairs in one visit. Up to 4,500 PSI.
• Manual Hand Pump — economical option for occasional high-pressure work. Compatible with single-component polyurethane and zerk-coupler packers.
• Single-Component Contractor Pump — electric pump for continuous contractor use with single-component activated polyurethane. Highest-duty commercial grade.
• Twin Star Dual-Component Pump — for two-component polyurethane or epoxy at high pressure. Significantly reduces project time vs cartridge systems on large jobs.

At day end: flush valve head and zerk coupler — ready for the next job.

Mechanical packers are drilled into the crack at a 45-degree angle, allowing resin to penetrate from the centre of the wall outward in both directions — ensuring complete infiltration. No surface sealing paste is required between packers for most crack types.

Typical pressure range: 2,500–3,500 PSI. Injection can be effective as low as 400 PSI depending on crack width and resin type. The operator controls flow and pressure manually to avoid over-pressurising the concrete.

Injection Materials

• Activated polyurethane — reacts on contact with moisture. Reaction time adjustable via activator ratio. Most popular for high-pressure contractor work.
• Single-component polyurethane — expands at a fixed rate when exposed to moisture. Simple and reliable for standard leak repair.
• Koster 2-in-1 dual-component polyurethane — foams with water, solidifies as hard resin without moisture. For moving cracks and repeat repairs.