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Anjon UnderGuard Pond Underlayment, 40 ft. x 360 ft.

Name: Anjon UnderGuard Pond Underlayment, 40 ft. x 360 ft.
Brand: UnderGuard
SKU: 927853284
Availability: OutOfStock
Rating: 5 (5 reviews)

5 stars out of 5 reviews

(5.0)|

5 ratings

Key item features

40' x 360' of 6 ounce density geotextile underlayment
Will come in multiple pieces equivalent to the square footage
Ideal uses include: pond underlayment, stabilization, weed barrier, landscaping, and construction underlayment
Manufactured in 5, 10, and 15 foot widths. For installation, overlap geotextile for complete coverage
Backed by a 20-Year Limited Manufacturers' Warranty! Ships as a boxed up folded piece(s)

Specs

Size
40' x 360'
Liner size
35 mil
Material
Fabric
Pond liner type
Pond Liner Underlayment
Product line
UG40X360
Color
Black

Price when purchased online

Not Available

How do you want your item?

Not available

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About this item

Product details

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.

UnderGuard Nonwoven Geotextile Underlayment fabrics are perfect for stabilizing soil, preventing rocks and roots from penetrating pond liner, and for creating 'rock pads' to cushion large rocks and boulders placed in the pond on top of the liner.

UnderGuard Nonwoven Geotextile Underlayment is EASY to install!

UnderGuard Nonwoven Geotextile Underlayment is manufactured in 5', 10' 15' widths and will ship to you in one or more pieces equal to the total square footage of the pond liner in liner/geo combo.

Simply lay the pieces next to each other and install the pond liner. Use any extra underlayment to create pads for large rocks and boulders placed inside your pond.

40' x 360' of 6 ounce density geotextile underlayment
Will come in multiple pieces equivalent to the square footage
Ideal uses include: pond underlayment, stabilization, weed barrier, landscaping, and construction underlayment
Manufactured in 5, 10, and 15 foot widths. For installation, overlap geotextile for complete coverage
Backed by a 20-Year Limited Manufacturers' Warranty! Ships as a boxed up folded piece(s)

info:

We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.

Warranty

Warranty information

20-Year Limited Manufacturers' Warranty

Warranty url

https://halfoffponds.com/terms-policies/

Customer ratings & reviews

5 out of 5 stars

stars5 ratings3 reviews

How item rating is calculated

Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.

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Showing 1-3 of 3 reviews

Jul 24, 2025

Janet

Item details

Assembled product width: 20 ft

Assembled product length: 25 ft

Sold and shipped byHalf Off Ponds

5 out of 5 stars review

Verified Purchase

Good product for the money.

Product is thick and easy to use. Good quality and well worth the price.

Helpful?

Oct 27, 2025

Gdad

5 out of 5 stars review

Underlayment

I think this stuff is mandatory when laying any type liner. It is a strong weave. But I think it needs to be doubled to be truly effective. And the cost for an extra piece is negligible when you consider the cost of replacing a leaking liner. And the price is probably the least of all the costs associated with building a pond. Buy it. Use it. Twice.

Review from halfoffponds.com

Helpful?

Oct 18, 2024

Regina

5 out of 5 stars review

10x25 underlayment

Great product that was shipped quickly and in perfect condition. I will order from this company again.

Review from halfoffponds.com

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Anjon UnderGuard Pond Underlayment, 40 ft. x 360 ft.

Key item features

Specs

How do you want your item?

Popular items in this category

Best selling items that customers love

VEVOR LLDPE Pond Liner Pond Liners 20x25ft 20 Mil Fish Liner Fish Pond Liner For Pond $113.99

VEVOR LLDPE Pond Liner Pond Liners 20x25ft 20 Mil Fish Liner Fish Pond Liner For Pond

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Reduced price Anjon PolyGuard 20-Mil PVC Pond Liner with Underlayment, 15 ft. x 35 ft. $373.23 Was $414.70

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Reduced price Half Off Ponds PVC Pond Liner, 10 ft. x 20 ft., 20-Mil $90.09 Was $100.10

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Anjon PolyGuard PVC Pond Liner, 20 ft. x 40 ft., 20-Mil

Anjon PolyGuard PVC Pond Liner, 10 ft. x 10 ft., 20-Mil $54.45

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Half Off Ponds PVC Pond Liner and Underlayment Combo, 15 ft. x 80 ft., 20-Mil $832.59 Was $1,023.50

Half Off Ponds PVC Pond Liner and Underlayment Combo, 15 ft. x 80 ft., 20-Mil

Anjon LifeGuard EPDM Rubber Pond Liner, 5 ft. x 10 ft., 45-Mil $68.40

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