Pressure Grouting: How to Stop Basement & Tank Leaks From the Inside

Some leaks can’t be reached from outside — a basement wall, a water tank, a lift pit. For these, pressure grouting seals the path of water from within the structure.

How pressure grouting works

High-pressure pumps inject polyurethane (PU) or epoxy resin deep into cracks and voids:

• PU injection reacts with water and expands into a foam that seals active, flowing leaks.
• Epoxy injection bonds cracked concrete back together with strength exceeding the original.

This makes our pressure grouting service the go-to fix for below-grade structures where external excavation is impractical or impossible.

Where it’s used

• Basements and retaining walls
• Underground and overhead water tanks
• Lift pits and sump areas
• Construction joints in slabs and foundations

The process in brief

1. Locate and mark every active leak point.
2. Drill injection ports at set intervals.
3. Inject grout under controlled pressure until the voids are filled.
4. Seal the ports and finish the surface.

For surface cracks in walls and slabs, pair this with crack repair & PU filling.

FAQ

Can you fix a leaking basement without digging? Yes — that’s exactly what pressure grouting is designed for.

Will the leak come back? PU forms a permanent expanding seal; epoxy structurally re-bonds the crack. Both are warranty-backed.

Serving basements and tanks across Vadodara and the wider region — book a free assessment.