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Specialists in Raising and Relevelling Structures
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Raise and Relevel are Australia's Specialists in Subsidence-related Remedial Technologies
Subsidence is the effect of a structure sinking into the ground lower than its intended position. This can have a few causes such as water erosion, the presence of vegetation, reactive clay soils, voiding, weak ground or poorly compacted fill and seismic factors.
The most commonly found symptoms of subsidence are:
1. Sinking Concrete
Slabs which sink or subside can indicate ground movement beneath your house or slab structure. Depending on the cause and extent of the problem, it could affect just a few areas of your home, driveway or the entire abode.
2. Wall Cracking
Cracks in walls are often the result of damage to the foundation or footing structures. Small movements in the foundations can result in larger cracks further up the walls.
3. Uneven Structures
Finding it difficult to open and close the windows or doors? The reason could be the unlevel structure and floor levels which has occurred with subsidence.
1. Subsidence due to Vegetation
Trees and vegetation absorb moisture from the ground and dry up the soil, leading to subsidence and concrete sinking.
2. Water Accumulation
Drainage system faults, when untreated, can lead to soft spots in the ground and can undermine the foundations.
3. Soil Erosion
Soil erosion will lead to a void beneath the structure, which weakens the house’s entire footing structure.
4. Heavy Vehicular Movement
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.
R+R utilise a range of modern techniques to mitigate or rectify the cause and symptoms of subsidence. Some are preventative in nature and others are remedially based.
1. Resin Injection
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.
2. Water Stopping
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.
3. Void Filling
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.
4. Structural Repairs
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.
R+R utilise a range of modern techniques to mitigate or rectify the cause and symptoms of subsidence. Some are preventative in nature and others are remedially based.
1. Cracks
Concrete driveway relevelled, wall cracks closed, concrete floors are re-levelled, and around windows & doors gaps are minimised.
2. Sunken Concrete
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.
3. Leak Control
With strategic placement of specialist materials, water flows can be stopped or diverted back to the correct course, and a healthy ground hydrology restored.
Why
Raise + Relevel?
Better.
Better quality workmanship for a better price - R+R deliveres value to our customers by offering the highest quality services at the most competitive price.
Experience.
Over 50 years of genuine experience in re-levelling structures – we are ground surgeons.
Guaranteed.
100 years warranty on our resin products and 10 years warranty (if the problem returns we return) on workmanship.
Contact Us
1300 053 835
NSW: 377694C
ACT: 20211579
QLD: 15300551
VIC: CDB-U 73507
Address
Sydney:
Unit 1 6-10 Booralee Street, Botany 2019
Melbourne:
1B Kendra Court, Seaford 3198
Queensland:
67 Araluen St, Kedron QLD 4031
©2022 Raise+Relevel
Managed by Web Design Agency
1. Sinking Concrete
2. Wall Cracking
3. Uneven Structures
1. Subsidence due to Vegetation
2. Water Accumulation
3. Soil Erosion
4. Heavy Vehicular Movement
1. Resin Injection
2. Water Stopping
3. Void Filling
4. Structural Repairs
1. Cracks
2. Sunken Concrete
3. Leak Control