![]() ![]() ![]() “You might have to carry your tools right around the back of the house so half the day is just carrying materials. If paying a tradesperson to do the work then usually you need to double costs, although labour charges will vary depending on site accessibility and soil conditions. Prices range widely for timber and the total cost will depend on the size of the boards used and how far the posts are spaced apart. But once over 1.5 metres high, these dimensions’ increase, so, for example, a 3-metre retaining wall could need piles 4.5 metres down. Generally, piles go down as deep as the wall’s height. The integrity of a timber retaining wall relies on strong piles. It’s very quick to put up and relatively cheap.” “It’s easy to use, you can chop it up easily with a handsaw, skillsaw or chainsaw. Mitre 10’s building expert Stan Scott says pine is cheaper and quicker to use than other materials and a retaining wall can be built in a weekend. ![]() While timber won’t have the same durability as stone or concrete, a well-built retaining wall should look good and stay strong for decades. Timber is most often the lowest cost options for retaining walls. How much does a timber retaining wall cost? The cost is dependent on factors such as, size (height and thickness) as well as the type of concrete used and the complexity of the project. (Includes installation, project management + GST. Cost for a concrete retaining wallĪ concrete retaining wall will cost you between $350 - $750 per square metre in New Zealand. The Ezi Wall blocks are the lightest and easiest option for the DIY-er with their easy to use interlocking system and come in a choice of three colours.Īnother concrete option is traditional grey 300 by 150-millimetre blocks but it’s not a DIY type job as it involves steel and filling. The most popular blocks in the larger size is the Firth Compac IV or of medium size are the Firth Garden Wall and Firth Sedona Stone blocks, which all offer a choice of a modern straight face finish or a traditional tri-face finish. There is a range of options from small to large to suit the size of your project including styles for landscape walls, tree rings, lawn edging and gardens.Ĭurved walls can be built to suit any project allowing it to blend in with any landscape. The Firth Keystone retaining range offers the natural look of stone to match your home aesthetic. He says aside from durability people also opt for concrete for the look. “If you drive around suburbs like Remuera you’ve got these brick walls that have been there 100 years with a lifespan of 5,000 years.” “Concrete might cost a bit more money in the beginning but then that’s it,” Cameron says. While wood is less expensive and a simple choice, its lifespan is much shorter. Concrete retaining blocks are built upon a concrete foundation by stacking or interlocking.Ĭameron Greig of Peter Fell says longevity is the key advantage with concrete. Modular or segmented concrete retaining block systems are also gravity-based. How much does a concrete retaining wall cost? Always seek advice when DIY building and be sure to check where pipes and cables to the house are located before you start digging posts. Good drainage is another key consideration as water build-up can compromise the wall’s structure and damp soil can cause it to move. Walls less than 1.5 metres high retaining garden areas generally do not require consent but any wall (regardless of height) bearing an additional load such as a driveway, building or carport will most likely require consent and possibly engineering design. People often overlook building consents for retaining walls, but when dealing with land stability you want to get it right - you certainly do not want to be held responsible for damage to other people’s property due to an inadequate retaining wall. Most important, regardless of whether you opt for stone, concrete or timber, is to establish if council consent and/or engineering design is required. With the likes of real-stone panels, gabion cages and modular concrete systems available, adding a retaining wall can be an opportunity to visually improve an outdoor area.Īside from the desired look, planning the style of a retaining wall you want will largely come down to what is being retained, your budget and soil conditions. While retaining walls have always had a place in the landscaping arena, gone are the days of them having to be unattractive or boring.
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