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Slabline Ltd

Throughout the years, we’ve firmly established ourselves as leaders in the concrete floor industry.

Piling & Retaining Walls

Slabline limited works with experienced civil construction companies and the teams have over 20 years’ experience in the industry. We specialize in many different retaining wall and piling systems. Over the years, we have worked on large civil infrastructure projects and small residential subdivision projects, including piles such as timber poles, reinforcing cages, structural steel I-beams etc.


Slabline and associated companies has a reputation for ensuring your project is completed on time, within budget, and to the highest standard.

  • Our areas of expertise include the following

    • Piling & Foundations
    • Concrete roading ,Paving & Carparks
    • Retaining Walls
    • Ground Stabilisation, Slip Remediation & Temporary Slip Protection
    • Public & Private Drainage
    • Value added Engineering

Piling & Foundations

We have an extensive range of retaining wall capabilities. Our team of experienced and skilled civil contractors and licensed civil engineers are able to construct walls of varying heights and lengths expertly. We have the ability to deal with any tricky ground conditions that may arise during construction We build cost-effective timber pole retaining walls, concrete palisade and concrete soldier pile retaining walls, gabion rock walls, MSE walls, keystone walls, and block walls.


Timber pole and rail retaining solutions offer a budget-friendly approach to retaining walls while maintaining an appealing aesthetic when executed skilfully. The construction process typically includes sloping the designated area, excavating to the required depth, and securely embedding the timber poles in concrete. Following the curing of the concrete, horizontal whalers are introduced, and specific drainage materials are applied behind the wall, adhering to engineering guidelines. slabline limited can deliver both standalone timber pole installations and comprehensive retaining wall construction services.

Typical designs of Timber retaining walls: 


Soldier piles, or barrier pile walls utilise either encased timber or reinforced concrete piles, are closely spaced, and penetrate into more competent subsoils, thereby retaining the more unstable upper layers. Often a capping beam is used to link the piles or used in conjunction with house piles to ensure stable ground support.
Bored, cast insitu reinforced concrete piles are used to support structures which produce heavy vertical loads. Piles of variable lengths can be drilled through soft or expansive soil into suitable load bearing material. Bored piles are used for building and structures, underpinning existing structures, and palisade, soldier pile and contiguous retaining walls. They provide for higher load bearing capacities, and minimise vibration and noise level. Adjacent piles, ground or other structures are not disturbed and large excavations and backfill are unnecessary, which is particularly important in conservation or environmentally sensitive sites.

Typical design of concrete reinforced piles: 


These traditional hollow core masonry blocks offer the durability and robustness of concrete, but with an improved architectural ambience. They are typically used where durability and street appeal are being considered and also take up less space so can be erected close to buildings / boundaries.

Typical design of a block retaining wall:

1. The Process

We’re here to help you from the beginning of the process right up until the very end. We’re here to give you a helping hand when you need it most.

2. Expert Services

We are a piling contractor that provides expert services so your project is completed on time whilst being aligned with your budget and specifications.

Our team comprises of NZ Chartered engineers , Licenced building Practitioner’s (LBP) and senior structural designers and detailers

3. Working With Limited Space & all conditions

Focusing on mini piling solutions, our services can help those with limited building spaces or tight access requirements.