Specialists in Raising and Relevelling Structures

Trees and vegetation absorb moisture from the ground and dry up the soil, leading to subsidence and concrete sinking.

Drainage system faults, when untreated, can lead to  soft spots in the ground and can undermine the foundations.

Soil erosion will lead to a void beneath the structure, which weakens the house’s entire footing structure.

Frequent heavy traffic loads can vibrate slabs or driveways slowly over time. With very slight movements occurring at the slab each time it is driven on, slabs will deteriorate if not supported properly.

We undertake a modern underpinning technique used on structures whereby we inject structural polyurethane resins to fill voids and compact the weak layers of ground. The polyurethane resin injection first binds the soil with the foundation and then penetrates the soft fill materials and compacts it to the extent that the structure above begins to achieve uplift, thus resulting in relvelling of concrete foundation levelling. The sunken floors are re-levelled by injecting structural polyurethane resins through tiny holes. The process will not interfere with your routine or comfort at all.

The presence and flow of water in proximity to footing structures presents a serious risk to the health of the building or slab. Water not only undermines the surrounding strata of a foundation, but it often does so completely undetected for long periods. R+R has extensive experience with polyol, acrylic and cement-based water stopping agents.


Voids in the ground can produce serious damage to a building by removing or reducing the strength of the supporting strata of structural components. R+R have access to a range of bespoke chemical and cementitious materials which we prescribe for project-specific requirements.

Our solutions are not only for under the ground – we also can improve the health of a structure by using crack stitching bars, masonry tie rods, high strength grouts and joint sealers.

Concrete driveway relevelled, wall cracks closed, concrete floors are re-levelled, and around windows & doors gaps are minimised.

Slab lifting (or slab jacking) ensures that the unlevel concrete is raised to its original level. The strengthened ground offers added stability to the structure. Relevelling means hassle-free closing and opening of doors and windows.