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Pond Underlayment- Black Heavy Duty Geotextile Fabric

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  • Made from a thick 6 oz. geotextile non-woven material that protects all types of flexible rubber pond liners.
  • Sometimes referred to as pond underliner, this material provides protection from burrowing animals, sharp rocks, roots, etc.
  • Increases puncture resistance of rubber pond liners by 400% !
  • Many other uses: Weed control, erosion control and more.

Underlayment Calculator

Enter the largest measurement for each dimension.
 
Underlayment is manufactured in widths of 10, 12, or 15'. This calculator will find the best size for your pond using these available widths. If both dimensions of your pond are greater than 15', you'll get a size you can cut in half to cover the whole area.

$29.50 - $300.00

Earn up to 59 points with purchase!

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This thick fabric material is ideal for providing protection against punctures or other damage to EPDM, PVC or rubber pond liners. The 60 mil thick non-woven geotextile fabric even provides some protection from burrowing animals. 

In addition, this geotextile fabric has many other uses, from retaining walls, to weed block or erosion control, and even for roofing! 

Fabric Weight: 6 oz per square yard.  Is 33% heavier than economy underlayments.


Some common uses include:

  • Landscape fabric 
  • Weed Block
  • Retaining walls
  • Roofing
  • Roads
  • Railroads
  • Dams
  • Trenches
  • Landfills
  • and many other civil engineering and construction uses.