Timber Retaining Walls
Timber does most of the work in the Hutt Valley. A pole and rail wall goes up in a few days, costs less per metre than anything else, and holds a 1.2m step in level.
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Korokoro, Wellington region
Retaining Walls in Korokoro
Top Retaining Walls Lower Hutt builds retaining walls in Korokoro, the small hill suburb tucked above Petone where the Korokoro Stream cuts down through the western hills. It is steep, it is close to the harbour, and the stream shapes how we handle water on almost every job.
- Timber, block, gabion, stone and engineered walls
- Full drainage behind every wall we build
- Consents lodged through Hutt City Council
- Drainage on every wall300mm of metal, a drain coil and geotextile. Never an optional extra.
- H5 poles as standardThe right treatment for timber that lives in wet ground.
- Consents handledHutt City, Upper Hutt and Wellington, start to finish.
- Itemised quotesYou see what the drainage and the spoil actually cost.
A stream valley changes the drainage question
The Korokoro Stream runs down through the middle of the suburb to the harbour, and the ground either side of it falls steeply. That gives you plenty of fall for a drain coil, which is a luxury after working down on the Petone flat.
What it also gives you is responsibility for where that water ends up. Discharging straight onto a stream bank or onto a neighbour's slope is not a solution. We plan the outlet as part of the design rather than as an afterthought at the end of the trench.
| Council for consents | Hutt City Council |
|---|---|
| Typical ground | Steep greywacke slopes above the Korokoro Stream |
| Walls we build most here | Gabion, timber pole and engineered block |
| Consent threshold | 1.5m of retained ground, or any surcharge above the wall |
| Drainage | 300mm metal, perforated coil, geotextile, on every wall |
| Site visit | Free, with a written quote to follow |
Steep sections, weathered ground
Korokoro sections climb hard, and the ground is weathered greywacke, strong when dry and considerably weaker once it is wet. Most walls here need engineering because of slope rather than because of height, since sloping ground above a wall counts as a surcharge.
We tell you at the first visit whether Hutt City Council will want a consent, and we organise the engineer if the answer is yes.
Close enough to the harbour for salt to matter
Korokoro sits just above Petone and the harbour, so gabion mesh gets specified PVC coated and fixings are hot dip galvanised or stainless. It is a small extra at the quote stage and it adds years at the other end.
Not sure whether your wall needs a consent? Send us a photo and a rough height. Under 1.5m of retained ground with nothing loading it from above is exempt. A driveway, a building, a pool or fill sloping up behind it is a surcharge, and that changes the answer.
Common questions
Retaining walls in Korokoro: common questions
Where does the drainage discharge on a Korokoro section?
It depends on your site. There is usually plenty of fall, but the outlet has to go somewhere sensible rather than onto a stream bank or a neighbour's slope. We plan it as part of the design.
Do steep Korokoro sections need consent?
Usually yes, because sloping ground above the wall is a surcharge. We check on site and tell you straight.
Wall types
Retaining walls we build in Korokoro
Concrete and Block Retaining Walls
Concrete goes in wherever something heavy sits above the wall, and in a city built beside an active fault it is also what engineers reach for first. We build.
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Engineered Retaining Walls
Past 1.5m, or once a driveway or building sits above it, the job changes completely. You need a chartered engineer, a building consent from Hutt City Council and.
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Stone and Gabion Retaining Walls
Stone suits the Hutt hills, where a hard manufactured face can look wrong against bush and rock. The whole region is founded on greywacke, so local quarries put out.
See moreNeed a retaining wall in Korokoro?
Answer three quick questions or call [PHONE] and we will book a free site visit.