The problem
What we found
Cracks at the base of grain bins were allowing water to enter the silo, causing grain rot and financial loss. Previous attempts using surface sealants and even spray foam coatings failed to stop water migration through the concrete, so intrusion continued.
The solution
How we repaired it
We removed the failed spray foam and thoroughly cleaned the cracks. We then drilled injection ports and performed pressure grouting using a water-activated polyurethane grout. By pre-wetting the crack, we encouraged the grout to chase water through the crack path, creating a sealed, waterproofed crack from within the concrete rather than a superficial coating.
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