






🛠️ Shield your projects with UNDERGUARD — where durability meets effortless installation!
UNDERGUARD Nonwoven Geotextile Underlayment offers a robust 15 ft by 20 ft coverage with a dense 6 oz fabric designed for multi-purpose use including pond protection, weed control, and construction stabilization. Manufactured in the USA, it comes with a 20-year limited warranty, ensuring reliable, long-term performance for professional and DIY landscaping projects.









| ASIN | B099NZSHW8 |
| Best Sellers Rank | #84,147 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #40 in Water Garden & Pond Liners & Seals |
| Brand Name | UNDERGUARD |
| Color | Black |
| Country of Origin | United States |
| Customer Reviews | 4.5 4.5 out of 5 stars (310) |
| Date First Available | January 25, 2012 |
| Included Components | Geotextile |
| Item Dimensions LxWxH | 20 x 12 x 12 inches |
| Item Package Dimensions L x W x H | 20.3 x 12.8 x 12.7 inches |
| Item Weight | 8 Pounds |
| Manufacturer | Anjon Manufacturing |
| Material | Fabric |
| Model Name | UG15X20 |
| Number of Items | 1 |
| Package Weight | 4.97 Kilograms |
| Part Number | UG15X20 |
| Size | 15 ft. x 20 ft. |
| Warranty Description | 20-Year Limited Manufacturers' Warranty |
T**T
Don’t get caught without protection! 😳
Great product! For pond building, this is now, industry standard for protecting your liner!!!
M**.
Thick, Easy to Lay Don
We have a 20 x 15 pond dug out. We had four people to lay out the underliner and pond liner. We could have done it with one. It was so easy! The liner is thick. It didn't say if the shiny side went up or down, so we put it shiny side down. We didn't even have to pin it - it didn't move after we tucked it. We will see how it holds up, but for now, we are very happy.
D**A
The item was great
Exactly what youd expect it to be. Easy to shape,trim and lay.
S**T
Keeping Weeds Away in My Garden for Years!!
I purchased this to use as a weed blocker in my vegetable garden. Today, after leaving the product on my garden year round for 4 years, it is still working very well! This is the greatest week blocker that I've tried. It blocks 100% of the weeds in my vegetable garden, It would not work well for row crops like beans, carrots, radishes etc because cutting a long row will also allow weeds to grow. I use this in the area of my garden where I plant tomatoes, squash, melons and the like. I cut a small "X" then plant the tomatoes or whatever and the fold the "X" back on itself. The weed barrier allows water through without puddling. Fertilizer can be placed on top of the product and the water dissolves the fertilizer, allowing it to pass through the weed barrier to the soil and plant roots. Finally, I can walk on the weed barrier without damaging it and the weed barrier is heavy duty enough that I anticipate using it for several years.
C**M
good underlayment for stone protection
We live in an area which is filled with stone under the ground - so much so farmers would build stone fences on their property boundaries with what came up each spring post-frost heave. With this in mind, I felt I'd use an underlayment to the pond liner material as an extra measure of protection. It's easy to work with and maybe 1/8 inch thick, but the way it's woven makes a good cushion. I tried shocing some pointy shale through it and it would of course deform, but didn't pierce. I wasn't using a whole lot of force, trying to mimic a frost heave. I was building a relatively small Koi pond, and was using native rocks to line the pond. After laying the EPDM liner, I took some of the underlayment and used it as cushion below the pond bottom rocks, to protect the liner just in case, as I was stanging on them while laying stone on the sides. So, good stuff. 4 out of 5 because I have nothing to compare this material to.
D**Y
Nice stuff!
Easy install considering id never used it before.
C**.
Not actually 15’ x 45’
I wanted to divide the 15x45 up into 12 even squares (7.5x7.5) but the actual underlayment came in two pieces and messed up my measurements. Doesn’t work for my specific purpose, but it’s a great underlayment material.
R**.
Cush and protects liner
I have used this before. Cushions well.
Trustpilot
2 weeks ago
2 months ago