8 oz Double Punched Non Woven Geotextile Fabric – Extra Heavy Duty Underlayment
Super Geotextile 8 oz non woven geotextile is our heaviest double needle punched filter fabric. Choose it when puncture resistance matters most: under large rock and rip-rap, for construction and road underlayment, and anywhere the fabric will take a beating.
- Double needle punched non woven polypropylene – strong, dimensionally stable and easy to cut.
- High water flow – filters soil while letting water through (90 gpm/ft²).
- Puncture resistant – 535 lb CBR puncture rating protects against rock and roots.
- Mildew & rot resistant – made to last up to 50 years when properly buried.
- Many sizes – from 3' wide drain rolls up to wide pieces for big jobs, plus a 1' x 1' sample.
Common uses
- Heavy rip-rap & boulder retaining walls
- Construction & road underlayment
- Pond liner underlayment (puncture protection)
- Shoreline erosion control
- Soil stabilization & separation
Which non woven weight do I need?
| 4 oz | 6 oz | 8 oz | |
|---|---|---|---|
| Best for | French drains, drainage, light-duty landscaping | All-purpose: erosion control, under rock & rip-rap, pond underlayment | Heaviest duty: large rock, construction, roads, high puncture risk |
| Grab tensile (ASTM D4632) | 100 lbs | 160 lbs | 205 lbs |
| CBR puncture (ASTM D6241) | 300 lbs | 410 lbs | 535 lbs |
| Water flow (ASTM D4491) | 140 gpm/ft² | 110 gpm/ft² | 90 gpm/ft² |
Need separation and load support under a gravel driveway or road instead of drainage? Look at our woven geotextile. Stopping weeds in beds? Use our Pro Grade 5 oz weed barrier.
8 oz technical specifications
| Property | Test method | Value (MARV) |
|---|---|---|
| Grab Tensile Strength | ASTM D4632 | 205 lbs (0.911 kN) |
| Grab Elongation | ASTM D4632 | 50% |
| Trapezoid Tear Strength | ASTM D4533 | 85 lbs (0.378 kN) |
| CBR Puncture Resistance | ASTM D6241 | 535 lbs (2.370 kN) |
| Permittivity | ASTM D4491 | 1.35 sec-1 |
| Water Flow Rate | ASTM D4491 | 90 gpm/ft² |
| Apparent Opening Size (AOS) | ASTM D4751 | 80 U.S. Sieve (0.180 mm) |
| UV Resistance | ASTM D4355 | 70% strength retained at 500 hrs |
Download the full 8 oz spec sheet (PDF)
Installation tips
- Clear and smooth the area – remove sharp rocks, roots and debris.
- Roll the fabric out flat and snug, without wrinkles.
- Overlap seams 12–18 inches (more on soft ground or slopes).
- Pin the edges and seams to hold the fabric in place while you work.
- Place gravel or rock gently – don’t drop large rock from height onto the fabric.
Don’t forget the pins. Hold your fabric in place with our 6" galvanized circle top landscape pins or 11 gauge galvanized landscape staples.
8 oz geotextile cross reference
Comparable to: Geotek 801, SRW EC8, Mirafi 180N, Willacoochee 800N, Amoco 4553, US Fabrics US 205NW, Carthage FX 80HS, TNS R080, LinQ 180EX, Contech C80NW, Skaps GT180.
FAQ
How do I figure out how much I need?
Multiply width x length for square feet, then add extra for seam overlaps and for wrapping up the sides of a trench. For a French drain, the fabric width should cover the bottom and both sides of the trench plus an overlap on top.
Woven or non woven?
Non woven is for drainage and filtration – water passes through quickly. Woven is for separation and stabilization under driveways and roads where water flow matters less.
Will this stop weeds?
It can help slow weed growth, but for planting beds our Pro Grade 5 oz weed barrier is the better choice.
Not sure which size?
Order a 1' x 1' sample first to see and feel the fabric.
