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Alliance  |  SKU: NGF20-0305000
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Alliance Gator Fabric GF20 Polyspun Weed Barrier

$43.99
Size

Ships same day on weekday orders placed before the 14:00 ET cut-off.

Typically 1 to 5 business days by UPS, FedEx Ground or USPS. Enter your ZIP for your dates.

Request a pallet quoteHow much do I need?Call (856) 418-4895

Ships fromWilliamstown, NJ (our warehouse)Sold byPolymeric Sand StorePaymentSecure checkout by ShopifyReturnsSee our return policy
Type
Landscape Fabric
Sizes
3 ft x 50 ft, 3 ft x 100 ft, 4 ft x 50 ft, 4 ft x 100 ft, 6 ft x 100 ft

About this item

  • 20 year warranty from Alliance.
  • UV stabilized so it survives the periods it sits exposed before mulch goes down.
  • Inert to common soil chemicals, so fertilizer and soil treatments do not degrade it.
  • 3 oz per sq yd (100 gsm) polyspun, 60 lbf machine direction and 50 lbf cross direction grab tensile.
  • Five roll sizes including 3 ft and 4 ft x 50 ft handrolls for small beds.
See the full description and data sheets

Shipping, pick-up and returns

Orders ship from Williamstown, New Jersey by UPS, FedEx Ground or USPS; weekday orders placed before 2 PM Eastern go out the same day. Warehouse pick-ups (call first so we can pull your order) and drop-off returns Monday to Friday 8 to 5, Saturday 8 to noon.

Return and refund policy · Shipping policy

Alliance Gator Fabric GF20 Polyspun Weed Barrier Add to cart
  • Ships Same DayFrom our NJ warehouse
  • 20 Year WarrantyThat is what the 20 means
  • UV StabilizedInert to soil chemicals
  • Real Humans(856) 418-4895

Why Gator Fabric GF20?

Polyspun Weed Barrier With a 20 Year Warranty

A weed barrier has an easy job compared with a base fabric, and paying base-fabric money for it is a waste. GF20 is the grade that suits a planting bed.

Full description and specs
  • 20 year warranty - Alliance Gator Fabric GF20 Polyspun Weed Barrier

    20 year warranty

    From Alliance.

  • UV stabilized - Alliance Gator Fabric GF20 Polyspun Weed Barrier

    UV stabilized

    So it survives the periods it sits exposed before mulch goes down.

  • Inert to common soil chemicals - Alliance Gator Fabric GF20 Polyspun Weed Barrier

    Inert to common soil chemicals

    So fertilizer and soil treatments do not degrade it.

  • 3 oz per sq yd (100 gsm) - Alliance Gator Fabric GF20 Polyspun Weed Barrier

    3 oz per sq yd (100 gsm)

    Polyspun, 60 lbf machine direction and 50 lbf cross direction grab tensile.

How to Install Gator Fabric GF20

The short version. Always follow the Alliance data sheet.

  1. Step 1: Clear the bed - Alliance Gator Fabric GF20 Polyspun Weed Barrier

    Clear the bed

    Of existing weeds and level the soil.

  2. Step 2: Roll the fabric out - Alliance Gator Fabric GF20 Polyspun Weed Barrier

    Roll the fabric out

    And cut around plantings.

  3. Step 3: Overlap seams - Alliance Gator Fabric GF20 Polyspun Weed Barrier

    Overlap seams

    And pin the edges so nothing lifts.

  4. Step 4: Cover with mulch or stone - Alliance Gator Fabric GF20 Polyspun Weed Barrier

    Cover with mulch or stone

    Promptly. Even a UV stabilized fabric lasts longer covered.

Watch installation videosTechnical data sheet (PDF)Alliance PDF, opens in a new tab

Test a small area first.

Description

Polyspun Weed Barrier With a 20 Year Warranty

GF20 is Alliance's landscape weed barrier: UV stabilized, inert to common soil chemicals and warranted 20 years. The "20" in the name is the warranty, not the weight. For garden beds and mulched areas, not for structural base work.

Ships Same Day
From our NJ warehouse		 20 Year Warranty
That is what the 20 means
UV Stabilized
Inert to soil chemicals		 Real Humans
(856) 418-4895

Why Contractors Ask for Gator Fabric GF20 by Name

A weed barrier has an easy job compared with a base fabric, and paying base-fabric money for it is a waste. GF20 is the grade that suits a planting bed.

  • 20 year warranty from Alliance.
  • UV stabilized so it survives the periods it sits exposed before mulch goes down.
  • Inert to common soil chemicals, so fertilizer and soil treatments do not degrade it.
  • 3 oz per sq yd (100 gsm) polyspun, 60 lbf machine direction and 50 lbf cross direction grab tensile.
  • Five roll sizes including 3 ft and 4 ft x 50 ft handrolls for small beds.

Gator Fabric GF20 Specifications

Weight 3 oz per sq yd (100 gsm)
Type Polyspun geotextile, UV stabilized
Grab tensile 60 lbf (270 N) MD, 50 lbf (225 N) CD
Grab elongation 75 percent both directions
Warranty 20 year
Roll sizes 3x50 (5 lb), 3x100 (9 lb), 4x50 (6 lb), 4x100 (12 lb), 6x100 (19 lb)

Where Gator Fabric GF20 Works

Alliance rates GF20 for:

  • Garden and flower beds
  • Mulched areas
  • Landscape covering and weed control
  • Separation barrier for planting

Where GF20 Should NOT Be Used (Straight From the Manufacturer)

This is not a base fabric. Alliance does not specify GF20 for paver base, Gator Base or wall reinforcement. It is the weakest of the four Gator fabrics.

For anything structural use GF3.5, GF4.4 or the woven GF5.

Not sure if your project qualifies? Call us at (856) 418-4895 before you order. We will give you a straight answer, even if the answer is that this is not the right product for your job.

How to Install Gator Fabric GF20

The full step by step guide is in the official documentation below. Here is the shape of the job:

  1. Clear the bed of existing weeds and level the soil.
  2. Roll the fabric out and cut around plantings.
  3. Overlap seams and pin the edges so nothing lifts.
  4. Cover with mulch or stone promptly. Even a UV stabilized fabric lasts longer covered.

Why Weed Fabric Gets a Bad Reputation

It usually fails for one of three reasons, none of them the fabric's fault:

  • Weeds grow on top, not through. Organic mulch breaks down into soil sitting above the fabric, and seeds germinate in that. Fabric cannot stop it.
  • It was left uncovered. UV is what destroys landscape fabric. Mulch it promptly.
  • Wrong grade for the job. Under a gravel path taking foot traffic, a 3 oz weed barrier is under-specified. Use GF3.5.
  • Refreshing the mulch every couple of seasons does more for weed control than any fabric.

Quick Answers

What does the 20 mean?
The 20 year warranty. It is not the fabric weight, which is 3 oz.

Can I use it under a paver patio?
No. Alliance does not specify it for base work. Use GF3.5 or GF4.4.

Can I use it under gravel?
For a decorative bed, yes. For a path taking real traffic, step up to GF3.5.

Will it stop all weeds?
It stops weeds coming up from below. Anything seeding into the mulch on top will still grow, which is true of every landscape fabric.

Does it need covering?
Yes. UV is what kills landscape fabric, so mulch or stone it promptly.

Official Alliance Gator Documentation

Technical Data Sheet (TDS): Weight, tensile, roll sizes and warranty from Alliance Gator.
Download the GF20 TDS (PDF) →

Documents are published by Alliance Gator. They open in a new tab. Every sheet we carry is also listed in our TDS and SDS library.

Pairs Well With

Order before our daily cutoff and your Gator Fabric GF20 ships today from New Jersey.

Work Out Your Rolls →

Questions about your project? Call (856) 418-4895 and you will get a real person who works with landscape fabric every day.

Data sheets

The manufacturer's technical data sheet (coverage, joint width, cure and rain-safe times) and safety data sheet are collected in the TDS and SDS library. Every figure on this page comes from those sheets.

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Questions about this product

Ask a question ›
What sizes are available?
Size: 3 ft x 50 ft, 3 ft x 100 ft, 4 ft x 50 ft, 4 ft x 100 ft, 6 ft x 100 ft. The price shown is per 3 ft x 50 ft unless you pick another option.
When will it ship?
In-stock orders placed before 2:00 PM Eastern on a weekday ship the same day from our Williamstown, New Jersey warehouse by UPS or FedEx Ground. The cut-off is when the carriers start arriving; order after it, or on a weekend, and it ships the next business day. Just missed it? Call (856) 418-4895: if the carrier has not picked up yet we do our best to get it out the same day. The box above the Add to cart button shows the live countdown and an arrival estimate for your ZIP. Phones are answered 24/7; the warehouse itself is open for pick-ups and returns Monday to Friday 8 to 5 and Saturday 8 to noon, Eastern. For a pick-up, call first so we can pull your order.
Can I buy by the pallet?
Yes. Full pallets ship by freight truck, so we price the delivery for your address instead of guessing. Request a pallet quote or call (856) 418-4895 and we will call you back with a delivered price.
Where are the technical and safety data sheets?
The manufacturers' technical and safety data sheets are collected in the TDS and SDS library. Coverage, cure time and application temperatures on this page come from those sheets.
Is contractor or bulk pricing available?
No. One price for everyone: the price on the page is what contractors, landscapers and homeowners all pay. For full pallets, request a pallet quote and we will price the freight to your address.

How to lay landscape fabric

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