PU injection is a type of cost efficient waterproofing method to solve the leakage issue in residential properties, especially if the water is coming from the outside. PU injection has short curing and repairing time, therefore, it is highly recommended to be adopted in sealing the visible active leaks observed in the concrete slabs. However, the physical properties of PU will change from liquid to solid after undergoing a specific chemical transformation process.
PU resin is a type of fluid resin that can expand in the concrete structure, and thus produce the polyurethane foam and fill the cracks or voids on it.
Polyurethane (PU) injection or grouting is a type of waterproofing solution to solve problems not limited to only water leakage, but also concrete cracks, depressed concrete slab, and settlement problems due to its high expansion properties and short reacting period.
