Geotextile Bontec Non-Woven Underlay NW18 (5.25 x 100m), Building Supplies

You want to use the right weight. The heavier this stuff is the better for most projects. Most needle-punch filter-fabric comes in 2 oz, 4 oz, 6 oz, and 8 oz thicknesses. If you want to do your project right the first time, the 6 oz or 8 oz is what you need for heavy duty projects or 4 oz and 6 oz for the highest water flow!.

Super Geotextile - 6 oz Geotextile (4x100)

UNDERGUARD Nonwoven Geotextile Underlayment - 10 ft

20' x 20' of 6 ounce density geotextile underlayment Will come as two pieces equivalent to the square footage Ideal uses include: pond underlayment,

UNDERGUARD Nonwoven Geotextile Underlayment - 20 ft. x 20 ft. - UG20X20

UNDERGUARD Nonwoven Geotextile Underlayment - 10 ft

Anjon Manufacturing's UnderGuard Nonwoven Geotextile Underlayment adds an extra layer of protection between pond liner and rocky or unstable soils. It stabilizes soil and prevents air voids from forming between the liner and earth; reduces wear and abrasion from rocks and roots and extends the life of pond liner. The biggest contributors to Koi pond, water garden, and waterfall failures are poor, unstable soil conditions.