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Dewitt 4.5oz Non-Woven Geotextile (15' x 300')

Dewitt 4.5oz Non-Woven Geotextile (15' x 300')

SKU DNG120-15300
$1,668.60 - $1,668.60
$1,668.60
$1,668.60 - $1,668.60
$1,668.60
Free Shipping

Dewitt · Non-Woven Geotextile · 4.5 oz · 15′ × 300′

Dewitt 4.5 oz non-woven geotextile fabric on a 15′ × 300′ roll covering 4,500 square feet. A step up in strength for the same range of jobs, where the subgrade is softer or the aggregate sharper. Strong polypropylene staple fibers that will not rot or decay, keeping soil in place while letting water pass through.

Weight
4.5 ozSeries DNG120
Roll Size
15′ × 300′4,500 sq ft per roll
Part Number
DNG120-15300Brand: DeWitt
Fiber
StaplePolypropylene, will not rot
  • Drainage & soil filtration
  • Permanent erosion control
  • Will not rot or decay
  • Cushioning & asphalt overlay
  • Free shipping on all orders

Free Shipping - Please submit a Quote Request for quantities larger than listed below.

Quantity Price Per Unit
(Free Shipping)
1 $1,668.60
2+ $1,585.17
3+ $1,501.74
10+ $1,418.31

01 Staple fiber non-woven · 4 to 8 oz

Dewitt Non-Woven Geotextile Fabric

Non-woven geotextile fabric made from strong polypropylene staple fibers that will not rot or decay. It keeps soil in place while permitting water to pass through — which is the whole job of a geotextile, and what separates it from a weed barrier.

Constructed for multiple landscaping and construction needs, it is very tough and long lasting. It is commonly laid underneath foundations to provide soil stability, behind retaining walls and banks for permanent erosion control, and as cushioning on the harder jobs — landfills, embankments, roads, sports stadiums and airfields.

Non-woven geotextile fabric being installed over prepared subgrade
Fabric going down before aggregate — separation and filtration in one layer.

3weights · 4 oz, 4.5 oz and 8 oz

Every weight on 4,500 sq ft rolls, in two formats. Pick the weight for the load, then the format for the site.

02 Why it lasts

It Will Not Rot Or Decay

The fabric is built from polypropylene staple fibers, which is why it can be buried and forgotten. A geotextile that degrades takes the separation layer with it and the aggregate above starts migrating into the subgrade — the exact failure it was installed to prevent.

03 What it does

Features And Uses

  • Drainage and soil filtration
  • Separates soil or dirt, including in garden spaces
  • Permanent erosion control
  • Weed control
  • Asphalt overlay, providing a very stable base
  • Cushioning
  • Made from strong polypropylene staple fibers that will not rot or decay
  • Keeps soil in place while permitting water to pass through
Separation is the function people underestimate. Put aggregate straight onto soft subgrade and the two mix: fines pump up into the stone, stone punches down into the soil, and the layer you paid for stops behaving like a layer. A non-woven geotextile between them keeps each where it belongs while still letting water through.

04 Choosing

Which Weight Do I Need?

All three weights are the same fabric type and install the same way. Heavier means more strength, more puncture resistance and more cushioning — and it costs more, so there is no sense over-specifying a light-duty job.

4 ozDNG105 4.5 ozDNG120 8 ozDNG205
WeightSeriesTypically specified for
4 ozDNG105Drainage and filtration, garden separation, weed control, light-duty landscape work
4.5 ozDNG120The same jobs with more margin — a step up in strength where subgrade is softer or the stone is sharper
8 ozDNG205Heavy-duty separation and cushioning — roads, embankments, landfills, stadiums, airfields, asphalt overlay
If you are unsure, describe the ground rather than the project. How soft the subgrade is and how angular the aggregate is decide the weight far more than what the finished surface will be. Call (800) 524-4161 and tell us both.

05 Roll format

12.5′ × 360′ Or 15′ × 300′?

Every weight comes in both formats, and both cover exactly 4,500 square feet at the same price. So the choice is not about area — it is about the shape of what you are covering.

FormatCoverageChoose it when
12.5′ × 360′4,500 sq ftLong runs — trenches, drainage lines, access roads, anywhere length matters more than width
15′ × 300′4,500 sq ftWide areas — pads, parking, large separation layers, where a 15′ width means fewer seams across
Fewer seams is the real saving. Every overlap costs material and labor, and every seam is a place the separation layer can be compromised. Matching roll width to the shape of the area does more for the installed cost than the roll price does.

06 A different product

Non-Woven Is Not Woven

These two get confused constantly and they are not interchangeable. Non-woven geotextile is a filtration and separation product: it is designed to be buried, it passes water readily through the fabric body, and it cushions.

Woven fabric is a surface and reinforcement product — higher tensile strength, far lower flow through the fabric, built to be walked on, planted through and exposed. Use woven for weed barrier and ground cover; use non-woven under aggregate, behind walls and in drainage.

View Woven Fabrics

Woven and non-woven geotextile fabric compared side by side
Woven on one side, non-woven on the other — different fabrics for different jobs.

07 Where it goes

Applications

Under foundations Behind retaining walls Banks & embankments French drains Drainage & filtration layers Under aggregate & base stone Beneath walkways Beneath bricks & concrete Asphalt overlay Roads & access routes Landfills Sports stadiums & airfields
Dewitt non-woven geotextile fabric lining a french drain trench
Lining a french drain — the fabric keeps fines out of the stone so the drain keeps draining.

08 Installation

Laying Non-Woven Geotextile

Grade the subgrade and clear anything sharp enough to puncture the fabric, then roll it out across the area and overlap adjacent runs rather than butting them. Pin the edges enough to hold position until the fill goes on.

Place aggregate from one side, working forward over material already down rather than driving on bare fabric. In a trench or french drain, line the excavation, place the stone, then fold the fabric back over the top so the aggregate is fully wrapped.

Do not skimp on the overlap. A separation layer only works where it is continuous. A butted joint that opens under load is a direct path for fines to pump up into the aggregate, and by the time you can see the consequence at the surface the fix is excavation.

09 Free shipping, every order

DeWitt Fabric Shipping

Shipping is free on every order, at any quantity. The map shows standard ground transit times for DeWitt fabric.

Transit times on the map are in business days, are approximate, and are specific to DeWitt fabric only. The day the order ships is not counted as a transit day.

Map of United States ground transit times in business days for DeWitt fabric orders

10 Buying from us

Why Buy Geotextile Fabric From Landscape Discount

Genuine DeWitt product

DeWitt is a leader in agricultural and construction fabric in the United States, with over 30 years of product development. We never substitute another brand or fabric without the explicit consent of the customer.

Three weights, both formats

4 oz through 8 oz in either roll format, so the fabric suits the ground rather than suiting what we happen to hold.

Woven and non-woven both stocked

Tell us whether the fabric is being buried under aggregate or exposed at the surface and we will tell you which type the job needs.

We answer the phone

When you call you quickly reach a helpful, live person happy to answer your product and order questions. (M-F 5:00 am - 3:00 pm Pacific Time)

11 Common questions

Non-Woven Geotextile FAQs

How much fabric do I need?
Every roll covers 4,500 square feet, in either format. Work out the area in square feet, divide by 4,500, and allow extra for overlapping adjacent runs — overlaps are not optional on a separation layer.
Which weight should I choose?
4 oz for drainage, filtration, garden separation and light-duty landscape work. 4.5 oz for the same jobs with more margin where the subgrade is softer or the stone sharper. 8 oz for heavy-duty separation and cushioning — roads, embankments, landfills, stadiums, airfields and asphalt overlay.
Does the roll format change the coverage?
No. The 12.5′ x 360′ and 15′ x 300′ both cover 4,500 square feet at the same price. Choose the long narrow roll for trenches and drainage lines, and the wide roll for pads and large areas where fewer seams across matters.
What is the difference between woven and non-woven?
Non-woven is a filtration and separation product designed to be buried — water passes readily through the fabric body and it cushions. Woven has higher tensile strength but far lower flow through the fabric, and is built for surface use where it is walked on, planted through and exposed. They are not interchangeable.
Can I use it as a weed barrier?
Weed control is one of its listed uses, and it works beneath walkways, bricks and concrete. For an exposed planting bed a woven weed barrier is the better tool — it is built for surface exposure and being planted through.
Will it rot?
No. It is made from strong polypropylene staple fibers that will not rot or decay, which is what allows it to be buried permanently as a separation layer.
Do I overlap or butt the seams?
Always overlap. A separation layer only works where it is continuous, and a butted joint that opens under load becomes a direct path for fines to migrate up into the aggregate.
Can I drive on it before covering it?
Avoid it. Place fill from one side and work forward over material already down. Driving or turning on bare fabric risks puncturing and dragging it out of position.
Is it suitable behind a retaining wall?
Yes — it offers long lasting, permanent erosion control when used behind retaining walls and banks, keeping the retained soil in place while letting water drain through rather than building pressure.
What does shipping cost?
Nothing. Shipping is free on every order, at any quantity.