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Pond Liner Underlay - Geotextile Non-Woven 3.9m Wide

$16.00

Professional non-woven geotextile underlay, the same underlay used in every Southern Waterscapes build. It protects your EPDM liner from punctures and abrasion.

Laid beneath the liner before backfilling, it forms a cushioning barrier against sharp stones, roots and rough ground. It is also a requirement for the Firestone ELEVATE 20-year warranty, which needs the liner fully covered with geotextile underlay and rock or pebble. For best results, use it both beneath and over the liner. The same underlay used in every Southern Waterscapes build. See how we install it

At 198gsm, TECHGEO PR20 is the industry standard weight for pond and water feature construction.

Size and pricing (inc GST):

  • 3.9m wide - $16.00 per lineal metre

  • Sold per lineal metre, minimum order 1 lineal metre, cut to size

Delivery: freight is calculated by your location and the size of your order. Use the enquiry form to request your cut size and we’ll come back to you with a freight quote and invoice.

Good to know:

  • Underlay colour may vary between orders. Stock may be black or white depending on availability, and both perform identically. Ongoing supply is expected to be black.

Pair with Firestone ELEVATE EPDM Pond Liner for a complete, warranted liner installation.

Professional non-woven geotextile underlay, the same underlay used in every Southern Waterscapes build. It protects your EPDM liner from punctures and abrasion.

Laid beneath the liner before backfilling, it forms a cushioning barrier against sharp stones, roots and rough ground. It is also a requirement for the Firestone ELEVATE 20-year warranty, which needs the liner fully covered with geotextile underlay and rock or pebble. For best results, use it both beneath and over the liner. The same underlay used in every Southern Waterscapes build. See how we install it

At 198gsm, TECHGEO PR20 is the industry standard weight for pond and water feature construction.

Size and pricing (inc GST):

  • 3.9m wide - $16.00 per lineal metre

  • Sold per lineal metre, minimum order 1 lineal metre, cut to size

Delivery: freight is calculated by your location and the size of your order. Use the enquiry form to request your cut size and we’ll come back to you with a freight quote and invoice.

Good to know:

  • Underlay colour may vary between orders. Stock may be black or white depending on availability, and both perform identically. Ongoing supply is expected to be black.

Pair with Firestone ELEVATE EPDM Pond Liner for a complete, warranted liner installation.

Geotextile Underlay Calculator — Southern Waterscapes
Southern Waterscapes Ltd

Geotextile Underlay Calculator

Enter your pond or waterfall dimensions below. The underlay should be sized the same as your liner — depth allowance and edge overlap are added automatically.

m
m
m
m each side
Underlay layers
Your underlay requirements
Required underlay length—
Required underlay width—
Roll width3.9m
Layers—
Lineal metres to order—
Total underlay area—
Estimated price (exc freight)—

Prices include GST. Freight is calculated per order based on underlay length and delivery location — we'll confirm this when you enquire. Minimum order 1 lineal metre. Roll width is 3.9m — if your required width exceeds 3.9m, contact us to discuss overlapping lengths.