There are a variety of reasons which cause concrete to settle and become uneven. Inadequate drainage or weak spots are a primary factor and create issues which would traditionally require new concrete to be laid. Concrete levelling is effectively repairing in-situ, requiring no excavation or removal of existing concrete which significantly reduces the costs involved.
Our concrete levelling uses expanding polymer resin in an injection process, through a hole less than one inch in diameter. The material is injected at high pressure and the expansion of the air bubbles below the slab surface performs a lifting action as the liquid resin reacts and fill any voids below the slab. The beauty of expanding foams is that they will follow the path of least resistance and expanding in all directions. They do not retain any moisture and can cure in as little as 30 minutes.
Ground stabilisation can also be applied beneath the concrete base or slab, meaning when the surface is protected long term, from the movement of the concrete.