Teretek® Used to Re-level Department Store Floors

Mainmark recommended its state-of-the-art engineered resin injection solution, Teretek®, to stabilise the soil underneath the slab, and raise and re-level the floor. The Mainmark team used a self-contained operations rig with two injection guns simultaneously to speed-up the process and ensure an even lift.

Teretek® was specified because of its unique two-in- one capability that improves the foundation ground, while raising and re-levelling the structure. It provides an alternative to the more expensive and disruptive traditional concrete underpinning process. Mainmark technicians identified a number of injection points, then injected the Teretek® expanding polyurethane resin mix through small tubes into the ground. On entering the ground, the components mix together and quickly expand by chemical reaction, which strengthens the ground underneath and re-levels buildings quickly and with minimal disruption.

Mainmark worked at night, outside Farmers’ trading hours, to ensure that customers and staff were not affected by the project. Mainmark screened-off and protected the Farmers’ merchandise, which wasn’t removed from the store, and kept the store clean throughout the process. Farmers’ staff could enter the store each morning and conduct business as usual without delay or interruption.

Mainmark completed the project in just four night shifts. The product shelves were corrected as the floor slab was re-levelled and there was no interference with normal store operation.

Walter Hayman, at ARCO Group Ltd, said, “ARCO Group Ltd was the main contractor for the Farmers redevelopment in Whangarei. ARCO Group contracted Mainmark to complete the floor levelling of the front half of the building. We were very impressed with Mainmark’s work ethics and would not hesitate to recommend them to anyone else looking to complete similar works.”