Retaining walls need to be carefully planned with the right materials so that they can hold the weight of the soil behind them and also allow water to drain freely. Building consents need to be obtained for any walls over 1.5m in height or if they are supporting any additional load such as a car or a building.
When it comes to choosing the type of material to use for your retaining walls, timber and firth blocks are your best options.
Firth blocks are stacked into a stable pattern so that the wall can withstand a large load and provide adequate drainage. Without the need to use mortar, a retaining wall can be erected in a short amount of time and can also be pulled apart with ease if your landscaping plans change in the future.
Timber provides a more natural look and is a popular choice for terraced gardens. While it tends to weather over time, timber is a more cost-effective solution that is suitable for smaller areas or where more flexibility is needed.
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