Artificial Grass Installation in Christchurch

A typical build-up is: excavate ~75-100mm, lay a compacted crushed-stone sub-base, a sharp-sand or granite-dust screed, a weed-membrane, then the turf pinned and joined, sometimes with a kiln-dried sand infill. Skipping layers is the number-one cause of lumps, weeds and movement.

Good turf is perforated and, over a correctly built free-draining sub-base, drains as well as or better than natural lawn. Poor drainage — a compacted or clay base with no permeable layer — causes puddling and smell, so ask exactly how the installer handles drainage.

A quality product installed on a proper base lasts around 15-20 years, with UV stabilisers preventing fading. Lifespan collapses when the sub-base is thin or poorly drained — the turf itself rarely fails first, the ground under it does.

In Christchurch, expect the national typical per square metre or foot, with small awkward areas costing more per unit than large open lawns. Groundwork depth and access for spoil removal move the price most.

Cost is driven by area and the quality of the turf, but the groundwork matters just as much: excavating the old lawn, laying and compacting a sub-base, adding a weed membrane and joining the rolls. Cheap quotes often skimp on the base, which is exactly where failures show up.

In Christchurch, ask to see completed installs a year or more old, get the base build-up specified in writing, and compare three quotes on groundwork depth, not just turf price. A cheap install that skips the sub-base costs more to fix later.

A fully installed lawn runs roughly NZD 65-150 per m², with mid-range around NZD 95. Small awkward areas cost more per m²; drainage build-up on heavy soils adds to the base cost.