Water/Bamboo Barrier 30-Inch by 100-foot Roll, 40 mil Thickness - Deeproot Brand

Name: Water/Bamboo Barrier 30-Inch by 100-foot Roll, 40 mil Thickness - Deeproot Brand
Brand: Deeproot
SKU: WB-30-40-100
Price: 449.04 USD
Availability: InStock

SKU WB-30-40-100

$449.04 - $449.04

$449.04

$449.04 - $449.04

$449.04

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DeepRoot · Water & Bamboo Barrier · Model WB-30-40-100

A 30″ × 100′ roll of 40 mil impermeable HDPE geomembrane — specified as a water barrier, a bamboo barrier or a root barrier depending on what you are holding back. It stops subterranean water movement, deflects running bamboo rhizomes, and redirects tree roots away from foundations, paving and buried services. At 40 mil the sheet is noticeably stiffer, with more puncture margin for rough backfill. Cuts to length with a utility knife, joins with sealant tape, and is made in the USA.

Roll Size: 30″ × 100′Mid-range depth
Gauge: 40 milBetter puncture margin
Material: HDPEImpermeable geomembrane
Uses: ThreeWater, rhizome & root barrier

Impermeable — stops water, rhizomes and roots
Cuts with a utility knife
Joins with sealant tape
Made in the USA
Free shipping on all orders

Joining rolls: sealant tape is required to seal vertical or horizontal laps — an unsealed joint is a hole in an otherwise continuous wall.

01 DeepRoot · HDPE geomembrane

One Sheet, Three Jobs: Water, Rhizomes And Roots

This is an impermeable HDPE geomembrane installed vertically in a trench. Depending on what you are holding back, the same material is specified as a water barrier, a bamboo barrier or a root barrier — which is why the product is named for both of its main uses. Nothing about the sheet changes; only the application does.

Unlike a geotextile, which lets water through while holding soil back, a geomembrane is built to let nothing through at all. As a water barrier it stops subterranean water movement beneath hardscapes and maintains water equilibrium around foundations. As a bamboo barrier it deflects running rhizomes along its face and back toward the surface, where they can be seen and cut. As a root barrier it does the same for tree roots. It is a wall, not a filter.

294psi hydrostatic resistance — 30 mil

Tested to ASTM D751 Procedure A, with 80 lb puncture strength to ASTM D4833. Heavier gauges test higher.

02 Why it works

Impermeable, And Tough Enough To Stay That Way

A barrier only works if it stays intact, so the mechanical numbers matter as much as the impermeability. High density polyethylene gives break strengths of 3,735 psi machine direction and 3,877 psi transverse with break elongation over 600%, so the sheet stretches under backfill loading rather than splitting. Puncture and tear resistance are what carry it through installation, which is when most geomembranes get damaged.

03 Choose a roll

Depths, Lengths And Gauges

Depth is set by how deep the water, rhizomes or roots you are stopping actually travel. Gauge is set by how much abuse the sheet will take during installation and service — and, for rhizome work, by how determined the plant is.

Roll	Gauge	Model
30″ × 100′	40 mil	WB-30-40-100	View 30″ × 100′ 40 mil
30″ × 300′	40 mil	WB-30-40-300	View 30″ × 300′ 40 mil
30″ × 100′	60 mil	WB-30-60-100	View 30″ × 100′ 60 mil
30″ × 300′	60 mil	WB-30-60-300	View 30″ × 300′ 60 mil
30″ × 100′	80 mil	WB-30-80-100	View 30″ × 100′ 80 mil
30″ × 200′	80 mil	WB-30-80-200	View 30″ × 200′ 80 mil
36″ × 100′	30 mil	WB-36-30-100	View 36″ × 100′ 30 mil
36″ × 300′	30 mil	WB-36-30-300	View 36″ × 300′ 30 mil
36″ × 100′	60 mil	WB-36-60-100	View 36″ × 100′ 60 mil
36″ × 300′	60 mil	WB-36-60-300	View 36″ × 300′ 60 mil
36″ × 100′	80 mil	WB-36-80-100	View 36″ × 100′ 80 mil
36″ × 200′	80 mil	WB-36-80-200	View 36″ × 200′ 80 mil
48″ × 100′	30 mil	WB-48-30-100	View 48″ × 100′ 30 mil
48″ × 300′	30 mil	WB-48-30-300	View 48″ × 300′ 30 mil

Shallower depths available. The same sheet is produced in 18″ and 24″ depths as well — see the bamboo barrier range, or call (800) 524-4161.

04 Choosing a gauge

30, 40, 60 Or 80 Mil

All four gauges are the same polymer and the same impermeable sheet. What changes is stiffness, puncture resistance and how much margin you have against a determined rhizome or a rough backfill.

Gauge	Character	Typical use
30 mil	Most flexible, easiest to handle and cut	Water control, general landscape work, straightforward runs
40 mil	Noticeably stiffer, better puncture margin	Rougher backfill, longer service expectation, light rhizome work
60 mil	Rigid enough to stand in the trench	Running bamboo, aggressive roots, commercial installations
80 mil	The heaviest sheet, hardest to deflect	The most aggressive running bamboo and long-term containment

For running bamboo, go heavy. Rhizome pressure is relentless and a barrier is buried for the life of the planting. The cost difference between gauges is small next to excavating a failed run and starting again.

05 Geomembrane properties, 30 mil

Tested Properties

Parameter	ASTM method	Mean value
MD break strength	D638	3,735 psi
TD break strength	D638	3,877 psi
MD break elongation	D638	611%
TD break elongation	D638	737%
Puncture strength	D4833	80 lb
MD tear strength	D1004	31 lb
TD tear strength	D1004	33 lb
Hydrostatic resistance	D751, Procedure A	294 psi

Values shown are for the 30 mil sheet. Properties for the 40, 60 and 80 mil material are available on request.

06 Product data

Specifications

Brand	DeepRoot
Material	High density polyethylene (HDPE) geomembrane
Permeability	Impermeable
Depths	30″, 36″, 48″ — also 18″ and 24″
Roll lengths	100′, 200′ and 300′
Gauges	30, 40, 60 and 80 mil
Cutting	Cut to any length with a utility knife
Joining	Vertically or horizontally with sealant tape
Uses	Water barrier, bamboo rhizome barrier, root barrier
Origin	Made in the USA
Shipping	Free on every order

07 Where it goes

Applications

Anywhere something below ground needs redirecting, or two soil environments need separating.

Running bamboo containment Building foundations Basement & crawl space walls Tree root deflection Retaining walls Golf course greens Sports field construction Planter & bed containment Sidewalks & driveways Patios & hardscape Soil type separation Utility trenches

08 What it does

Three Jobs, One Material

As a water barrier — stops subterranean water movement and maintains water equilibrium around foundations, so soil on the structure side is not driven through wet-dry cycling.
As a bamboo barrier — deflects running rhizomes along its face and back up toward the surface, where they can be inspected and cut rather than escaping the planting.
As a root barrier — redirects tree and plant roots away from foundations, paving and buried services.
Separates soil environments — constructed greens from native clay, or one planting zone from another.

09 Installation

Five Steps To A Sealed Run

Mark the line and check utilities. Set the run between what you are containing and what you are protecting, and confirm clearances before breaking ground.
Trench to the barrier depth. Keep the trench wall plumb. The barrier only works to the depth it reaches, so match the depth to how deep water, rhizomes or roots actually travel on your site.
Cut to length. The sheet cuts to any length with a utility knife — no heat, no specialist tooling.
Seal every joint. Sheets join vertically or horizontally with sealant tape. This step decides whether the run performs: an unsealed lap is a hole in an otherwise continuous wall.
Backfill in lifts. Keep the sheet vertical and tight against the trench wall as you go, and inspect the finished run for punctures and open laps before closing it up.

Add Sealant Tape

For rhizome work, leave the top edge proud. Standing the barrier an inch or two above grade lets you see a rhizome that has tried to cross over the top and cut it before it establishes on the far side.

10 The full HDPE range

View Our Full Selection Of HDPE Barriers

Because this is one material serving three purposes, the range is catalogued under more than one heading — the rolls are the same product whichever list you find them in. If the depth, gauge or length you need is not on this page, the wider selections run from 18″ to 48″ deep and 30 to 80 mil.

View All HDPE Barriers

11 Free shipping, every order

Shipping And Volume Orders

Free shipping on every order at Landscape Discount — every roll ships free, with no minimum order.

Running a long perimeter? Orders over $5,000 qualify for volume pricing. Call (800) 524-4161 or submit a product quote request and we will put together written volume pricing for your project.

12 Common questions

Water And Bamboo Barrier FAQs

Why is it called a water barrier and a bamboo barrier?

Because it is one material with more than one job. The same impermeable HDPE sheet stops subterranean water movement, contains running bamboo rhizomes, and deflects tree roots. Nothing about the roll changes between those uses, so it is listed under both names.

Which gauge should I use?

30 mil suits water control and general landscape work. 40 mil gives more puncture margin for rougher backfill. For running bamboo, 60 or 80 mil is the sensible choice — rhizome pressure is relentless and the barrier stays buried for the life of the planting.

How deep should the barrier be?

Deep enough that whatever you are stopping cannot travel beneath it. That depends on your soil, drainage, and the species involved. Depths from 18″ to 48″ are available; for running bamboo in good soil, deeper is safer. If you are protecting a structure, take the depth from the design rather than estimating.

How do I join two rolls?

With sealant tape, vertically or horizontally. The sheet itself is impermeable, so the joints are the only place a run can fail — tape every lap and inspect before backfilling.

Can I cut it on site?

Yes — it cuts to any length with a utility knife. No heat welding or specialist tooling is needed for either cutting or joining.

Will it contain running bamboo?

That is one of its primary uses. The barrier deflects rhizomes along its face and back toward the surface rather than letting them pass. Leave the top edge standing an inch or two above grade so you can see and cut any rhizome that tries to cross over the top, and check the line each season.

Is it the same as a geotextile fabric?

No, and the difference matters. A geotextile is designed to let water through while holding soil back. This is a geomembrane: impermeable, designed to let nothing through. A landscape fabric will not stop water movement or a rhizome.

How much does shipping cost?

Shipping is free on every order at Landscape Discount — every roll ships free with no minimum order.

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