Gabion Retaining Walls
Every other wall type fights water. You build a drainage layer, run a coil, wrap it in geotextile and hope nobody blocks the outlet in fifteen years. A gabion wall has no solid back face for water to push.
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Built strong. Built to last.
Stone and Gabion Retaining Walls in Lower Hutt
Top Retaining Walls Lower Hutt builds stone and gabion retaining walls across Lower Hutt using rock that comes out of the Wellington region. The hills on both sides of this valley are greywacke, the same hard grey sandstone the whole area is founded on, and quarried greywacke is angular, cheap to cart here and looks like it belongs on the site.
- Gabion baskets drain through the face so pressure never builds
- Wellington greywacke, quarried close to the valley
- Boulder walls placed rock by rock with a 5 tonne digger
- 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.
Stone and Gabion Retaining Walls
Stone and Gabion Retaining Walls we build in Lower Hutt
Gabions are the practical end of this category. A gabion is a galvanised or PVC coated wire basket packed with 100mm to 200mm rock, working as a gravity wall. Water runs straight through, so pressure never builds behind the face, and the basket deforms slightly instead of cracking when the ground moves. Beside an active fault, that flexibility is worth paying for.
Boulder and dry stone walls sit at the other end. They cost more per metre because a machine operator places every rock by hand, and every rock has to bear on three points of contact. What you get back is a wall with no manufactured edge on it anywhere.
Boulder Retaining Walls
An operator picks up a rock, offers it to the wall, turns it, sets it down, and often picks it straight back up to try a different face. Each boulder has to bear on three points of contact against the.
Read moreGreywacke Rock Retaining Walls
Greywacke is a tough, dense sandstone that makes up the basement rock under Wellington, Porirua, Lower Hutt and Upper Hutt. It breaks into angular blocks with flat faces, which is exactly what a dry laid.
Read moreDry Stone Retaining Walls
The wall has two faces with smaller stone packed between them, and long through stones set at intervals tying both faces into one structure. Courses lean back into the bank slightly, and each stone.
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The part you never see
How we build a retaining wall that drains
Nearly every failed wall we get called to in the Hutt Valley failed the same way. Water sat behind it, the soil got heavy, and the wall leaned out a little more each winter. So we build the drainage first and the face second.
- At least 300mm of clean free draining metal sits behind the wall face
- A perforated drain coil runs the full length at the base
- Geotextile cloth wraps the top and back so silt cannot block it
- The coil discharges to daylight or to stormwater, never a dead end
Where we work
Stone and Gabion Retaining Walls across Lower Hutt and Wellington
We cover the whole Hutt Valley plus Upper Hutt and Wellington City.
Not sure which wall type suits your section?
We will come out, measure it and tell you straight. The site visit and the written quote are both free.