Description

Product Reviews

Description

Quick Facts

For new lawns Well-draining blend Easy to spread

Turf Underlay

Turf Underlay is a blend of sand, soil, fly ash and 20% organics, designed to create a well-draining base for establishing new lawns. The easy-to-spread mix helps you prepare an even surface before laying turf.

Supplied in bulk and sold by the cubic metre (m³).

Usage

Spread evenly over the prepared lawn area and level the surface before laying turf. Apply at a depth of 50–100mm; choose the depth to suit your site preparation and finished lawn level.

Technical Data

Blend components: sand, soil, fly ash and 20% organics. Sale unit: cubic metre (m³).

Turf Underlay Volume Calculator

Enter your lawn dimensions and application depth. Approximate irregular spaces using several sections. Triangle height is measured perpendicular to its base.

Shape
Length (m)

Width (m)

Depth (mm)

0.00 m²

Area
0 m²

Volume Required
0 m³

Volume is calculated in cubic metres (m³). Results do not include an allowance for settling or compaction.

This is only a guide and all amounts should be confirmed prior to ordering. Four Seasons Nursery takes no responsibility for issues resulting from the use of this calculator.

Delivery

Delivery of this product is limited to Sydney metro and our normal delivery zone. Please check delivery availability for your address before ordering. Advise us of narrow driveways, steep access, low branches or other access restrictions so delivery arrangements can be discussed.

See our Delivery Information page for area and charge details.

Frequently Asked Questions

How much turf underlay do I need?

Measure your lawn area and multiply it by the required depth in metres, or use the volume calculator above. For example, 10m² at 100mm deep requires 1m³ before allowing for any settling or compaction.

What is in this turf underlay?

The mix contains sand, soil, fly ash and 20% organics. It provides a well-draining base that is easy to spread when preparing for a new lawn.

How much area will one cubic metre cover?

One cubic metre covers 20m² at 50mm deep or 10m² at 100mm deep. These are calculated volumes before allowing for settling or compaction.

How is this product sold?

Turf Underlay is supplied in bulk and sold by the cubic metre (m³).

Product Reviews

1 review Write a Review

5
Bulk garden supplies

Robert Knott on 19th Dec 2025

The tonne of turf underlay is perfect for our application. The delivery of the bulk material to our North Sydney apartment block was simply amazing. The boys cheerily met the challenge of timing, heavy traffic and steep driveway - they are legends.

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Screened Underlay/Fill Sand TS

$59.00

Fill Sand is ideal for under slabs or general filling before concreting and site levelling. Not suitable for new turf installations. Pavers should not be laid on top, a 30mm layer of river sand...

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