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Set within Queenstown’s alpine landscape, this residential project aimed to stabilise an erosion-prone slope below a newly built home along Old Homestead Road. With the house overlooking Lake Whakatipu and offering uninterrupted views toward Frankton, it was essential that the solution enhanced the site’s natural beauty while providing robust structural performance.
The homeowner sought a retaining system that could meet the challenges of steep terrain and an arid microclimate, while also supporting native planting and adding long-term value to the property. With landscape works led by Outerspace Landscapes and product supply by Advance Landscape Systems, the Flex MSE Vegetated Wall System was selected as the most suitable approach. The terraced, green wall provided stability, ecological integration, and visual appeal, delivered on time for the property’s pre-Christmas market listing.
The project involved stabilising a steep, erosion-prone slope located directly below the home’s primary outdoor living areas. The site presented several key challenges:
In addition to these performance requirements, the solution needed to present a soft, natural aesthetic that complemented the rugged landscape and premium residential setting.
Flex MSE was chosen for its ability to deliver both structural resilience and a vegetated, natural finish. The retaining wall was built using a terraced design to break up height, follow the land’s contours, and create pockets for planting. With a total height of approximately 3.5 metres, the system was installed directly onto the site’s rock base, providing a solid and durable foundation.
To support rapid vegetation establishment in the dry summer period, each Flex MSE bag was pre-saturated before installation. An automated irrigation system was integrated behind the vegetated face to provide moisture during the hottest months. The wall was reinforced with ACEGrid GG40 at every third row to meet engineering requirements and ensure long-term stability.
Flex MSE offered a versatile and visually integrated solution to meet the project’s demanding environmental and timeline constraints.
Planting selections were tailored to suit the site’s exposed, low-rainfall conditions. The species mix was chosen for drought resistance, low maintenance, and visual contrast.
These species were planted directly into the Flex MSE bags and quickly established with irrigation support. The resulting vegetation delivers year-round coverage and contributes to long-term slope stability.
Learn more about Flex MSE Vegetated Wall System
Interested in specifying Flex MSE® on your next project?
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