Tag Archives: underwater foam

Can polyurethane set up, lift concrete and maintain its compressive strength when pumped under slabs where water is present? At HMI it can!

RR401g is the latest HMI innovation in perfecting specialized foams for residential, commercial and DOT contractors who lift and level concrete slabs. This 3-4 pound hydrophobic/hydro-insensitive foam is again a two component polyurethane foam product, best delivered by HMI equipment, which sets up, lifts concrete and maintains compressive strength even when a void is filled with water. Weather and draining are no longer concerns for contractors or government crews. Traditional delays and costs in completing projects are gone.

Commitment to Innovation Is More Than A Tag Line At HMI!

For 40 years HMI has

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