--- product_id: 209437365 title: "Pond Liner, 20 Mil HDPE Pond Liners for Outdoor Ponds, 10 x 13 FT" brand: "uwioff" price: "€ 74.84" currency: EUR in_stock: true reviews_count: 12 category: "Uwioff" url: https://www.desertcart.ie/products/209437365-pond-liner-20-mil-hdpe-pond-liners-for-outdoor-ponds store_origin: IE region: Ireland --- # UV resistant for long outdoor life 20 mil thickness for durability Eco-friendly HDPE, safe for fish & plants Pond Liner, 20 Mil HDPE Pond Liners for Outdoor Ponds, 10 x 13 FT **Brand:** uwioff **Price:** € 74.84 **Availability:** ✅ In Stock ## Summary > 🌿 Seal your pond’s future with strength and style — don’t let your backyard fall behind! ## Quick Answers - **What is this?** Pond Liner, 20 Mil HDPE Pond Liners for Outdoor Ponds, 10 x 13 FT by uwioff - **How much does it cost?** € 74.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/209437365-pond-liner-20-mil-hdpe-pond-liners-for-outdoor-ponds) ## Best For - uwioff enthusiasts ## Why This Product - Trusted uwioff brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Safe HDPE Material:** Non-toxic, environmentally friendly liner that keeps your aquatic life thriving safely. - • **UV & Puncture Resistant:** Built to brave the sun’s harsh rays and outdoor elements without degrading or cracking. - • **Heavy-Duty 20 Mil Thickness:** Engineered to withstand punctures and tears, ensuring your pond stays leak-free season after season. - • **Customizable 10 x 13 FT Size:** Perfectly sized for medium ponds up to 500 gallons, with easy trimming for a tailored fit. - • **Effortless Installation & Maintenance:** Lightweight and flexible design means no tools required and easy cleaning to keep your pond pristine. ## Overview The UWIOFF Pond Liner is a 20 mil thick, heavy-duty HDPE liner measuring 10 x 13 feet, designed for medium-sized outdoor ponds holding up to 500 gallons. It offers superior UV and puncture resistance, ensuring long-lasting durability while being safe for fish and plants. Lightweight and flexible, it’s easy to install without tools and can be trimmed to fit custom pond shapes. Its eco-friendly material prevents soil contamination and simplifies pond maintenance, making it a top choice for backyard waterfalls, koi ponds, and water features. ## Description desertcart.com : UWIOFF Pond Liner, 20 Mil HDPE Pond Liners for Outdoor Ponds, 10 x 13 FT | Heavy Duty Fish Koi Pond Liner, Black Pond Tarp for Garden Landscape Stream Fountain Waterfall, UV, Puncture & Tear Resistant : Patio, Lawn & Garden Review: Works well, will mold and fold fine. Material is sturdy. - First things first, the material is thin but strong, it isn't rubber so it won't mold immediately and there will be creases as it gets laid in, however, once inside, we found that adding river pebbles of varying size and weight, helped hold the material down. Then we started filing it with water, which helps the material mold itself and further sink into the soil. This is southern Florida, so the soil here is rocky and has natural lime stone, the lime stone we couldn't dig out we covered with moist soil and mud, we did this before we laid the material in. With the weight of pebbles and water, it began to mold almost immediately. Also, we did this around 7pm, sun setting afternoon, by mid-day, the heat from the sun will further aid the material to molding around the opening. The remaining material I'd recommend one not to cut, we placed decorative concrete stones around it and over the excess, used soil from the hole to fill in around and over material and then mulched it to further hold it down. What you see in photo is this. Again, it isn't soft rubber but it's pretty good for a small pond which is about 7 ft long and 5.5 wide. At its deepest it's about 2.5 ft, at its most shallow about 10 inches. I'd recommend the material, the size is more than adequate for the laguna we had in mind. We should have put another layer on top of it, but it's strong as is, we've walked around inside it and it feels sturdy at 20 mil. Comes folded up tightly. Didn't notice any tears or holes in fabric. It's been holding water for hours without issue. So far, very good. Price point couldn't be beat and the reviews are pretty good. Will update with more photos when it's finished. 👍 Update photos as pond/laguna takes shape. Liner is still holding up without issue. Liner is folded beneath stones, as you can see the stones are heavy (over 40 pounds each) and some are stacked. We did this to make sure the material stays in place, doesn't shift towards submerged center. Also, has some security for wildlife currently in pond (fish and turtles). Inside liner is holding about 100 pounds of river pebbles. Hand chosen so as not to tear or poke liner. I recommend using smooth stones and rocks. For the curious: the submerged plant is Egyptian papyrus, other plants are Water Hyacinth (native to Florida) and wild grass orchids 🙂 Review: Needed to line a HDPE preformed pond due to crack, it is working very well! - We experienced a two inch crack in the corner where the preformed pond bends at the side raised level, had tried two part marine epoxy, durable silicone, and neither worked. Wasn't about to engage in the HDPE repair schemes I'd seen online, so we moved them inside inot a tank and went through the aquarium cycling accompanied by Microbe lift NiteOut 2, to ease the nitrogen cycling, adding it every time we did a water change which worked like a charm. So once setting back up the preformed without having to replace that, this is the most affordable, logical route we could think of. Online it looked trustworthy. Laid it out in the sun on a day in the mid 50's and it warmed up and made it soft/more flexible. Left it there after unfolding, for about 30 minutes, rushed it into place (our pond is in the shade), pressed it down and added new rinsed gravel which pressed it down even more. Easily trimmed the liner down from top of the sides, letting it to all the way to the ground, surrounding that with rocks on the ground- we use polywool stuffing as insulation between the liner on the outside and the preform pond to insulate the water better. We were moving pondfish back outside after moving them in for winter. We took aquarium gravel and added it, added the water too, more fresh water and treated with good bacteria and the existing aquarium filters. Several times I've slipped my hand between the liner and preformed shell and still perfect, zero leakage! SO happy we made this more and the fishies are happy and loving their new summer home too. Once winter gets really cranking we'll move them back indoors using the existing gravel and water as to ease the transition , and hopefully this will still be good after a winter in place. ## Features - Size - Pond Liner 10 x 13 FT is ideal for medium ponds, up to 500 gallons of water, also you can cut to any size you want for small pond; Easy to install, no tools required - Thickness - Pond liner 20 mil, thick pond liners for outdoor ponds; Ultra-durable yet lightweight, easy to install, while flexible for a variety of creative designs - Safe Material - Made of good quality HDPE, which is more heavy-duty and leak-proof than LDPE liners. Our fish pond liner is UV and puncture resistant, can be used for many years; Environmentally friendly, safe for your fish and plant - Easy to Clean - The koi pond liner provides a flat surface for your pond, reducing the soil accumulation. Also can effectively prevent harmful substances in the soil from penetrating into the pond to pollute the water, so that you can clean pond easily - Multifunctional Use - Great outdoor pond liner for any backyard waterfalls, fish/koi ponds, and other water features; Can be used in different ways: Utilize the liner for raised garden beds, sub-irrigation planters, and other self-watering projects ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #4,809 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2 in Water Garden & Pond Liners & Seals | | Customer Reviews | 4.3 out of 5 stars 2,290 Reviews | ## Product Details - **Size:** 10-Foot by 13-Foot - **Color:** Black - **Material:** High Density Polyethylene (HDPE) - **Brand:** UWIOFF - **Product Dimensions:** 156"L x 120"W ## Images ![Pond Liner, 20 Mil HDPE Pond Liners for Outdoor Ponds, 10 x 13 FT - Image 1](https://m.media-amazon.com/images/I/613yKb62GnL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well, will mold and fold fine. Material is sturdy. *by A***A on March 9, 2025* First things first, the material is thin but strong, it isn't rubber so it won't mold immediately and there will be creases as it gets laid in, however, once inside, we found that adding river pebbles of varying size and weight, helped hold the material down. Then we started filing it with water, which helps the material mold itself and further sink into the soil. This is southern Florida, so the soil here is rocky and has natural lime stone, the lime stone we couldn't dig out we covered with moist soil and mud, we did this before we laid the material in. With the weight of pebbles and water, it began to mold almost immediately. Also, we did this around 7pm, sun setting afternoon, by mid-day, the heat from the sun will further aid the material to molding around the opening. The remaining material I'd recommend one not to cut, we placed decorative concrete stones around it and over the excess, used soil from the hole to fill in around and over material and then mulched it to further hold it down. What you see in photo is this. Again, it isn't soft rubber but it's pretty good for a small pond which is about 7 ft long and 5.5 wide. At its deepest it's about 2.5 ft, at its most shallow about 10 inches. I'd recommend the material, the size is more than adequate for the laguna we had in mind. We should have put another layer on top of it, but it's strong as is, we've walked around inside it and it feels sturdy at 20 mil. Comes folded up tightly. Didn't notice any tears or holes in fabric. It's been holding water for hours without issue. So far, very good. Price point couldn't be beat and the reviews are pretty good. Will update with more photos when it's finished. 👍 Update photos as pond/laguna takes shape. Liner is still holding up without issue. Liner is folded beneath stones, as you can see the stones are heavy (over 40 pounds each) and some are stacked. We did this to make sure the material stays in place, doesn't shift towards submerged center. Also, has some security for wildlife currently in pond (fish and turtles). Inside liner is holding about 100 pounds of river pebbles. Hand chosen so as not to tear or poke liner. I recommend using smooth stones and rocks. For the curious: the submerged plant is Egyptian papyrus, other plants are Water Hyacinth (native to Florida) and wild grass orchids 🙂 ### ⭐⭐⭐⭐⭐ Needed to line a HDPE preformed pond due to crack, it is working very well! *by 8***4 on July 13, 2026* We experienced a two inch crack in the corner where the preformed pond bends at the side raised level, had tried two part marine epoxy, durable silicone, and neither worked. Wasn't about to engage in the HDPE repair schemes I'd seen online, so we moved them inside inot a tank and went through the aquarium cycling accompanied by Microbe lift NiteOut 2, to ease the nitrogen cycling, adding it every time we did a water change which worked like a charm. So once setting back up the preformed without having to replace that, this is the most affordable, logical route we could think of. Online it looked trustworthy. Laid it out in the sun on a day in the mid 50's and it warmed up and made it soft/more flexible. Left it there after unfolding, for about 30 minutes, rushed it into place (our pond is in the shade), pressed it down and added new rinsed gravel which pressed it down even more. Easily trimmed the liner down from top of the sides, letting it to all the way to the ground, surrounding that with rocks on the ground- we use polywool stuffing as insulation between the liner on the outside and the preform pond to insulate the water better. We were moving pondfish back outside after moving them in for winter. We took aquarium gravel and added it, added the water too, more fresh water and treated with good bacteria and the existing aquarium filters. Several times I've slipped my hand between the liner and preformed shell and still perfect, zero leakage! SO happy we made this more and the fishies are happy and loving their new summer home too. Once winter gets really cranking we'll move them back indoors using the existing gravel and water as to ease the transition , and hopefully this will still be good after a winter in place. ### ⭐⭐⭐⭐⭐ An Unconventional But Perfect Choice *by V***Y on September 24, 2025* As a home gardener who has experimented with a lot of different methods, I've found that sometimes the best tool for the job isn't the one it was originally designed for. That's the case with the UWIOFF 10 x 13 FT Pond Liner. While it's marketed for ponds, it turned out to be the perfect material for building a large self-watering garden bed. My project required a liner that was durable, completely waterproof, and manageable to install in a confined space. The 20 Mil thickness of this liner was the key. It was thick enough that I wasn't worried about it getting punctured by tools or rocks, but still flexible enough to be folded and molded into the shape of the raised bed without a lot of struggle. I was able to get clean corners and edges, ensuring a tight seal for the water reservoir at the bottom of the bed. The generous 10 x 13-foot size gave me plenty of material to work with, allowing for a good overlap and a comfortable margin of error. The liner has held up perfectly. It contains the water effectively, and after an entire growing season, there are no leaks or signs of wear. The black color also helps absorb a little bit of heat, which is a bonus in my cooler climate. For anyone looking to create a large-scale self-watering system for their garden—whether it's a sub-irrigated planter or a wicking bed—I can't recommend this product enough. It's a reliable, heavy-duty solution that delivers on its promise of being completely waterproof and durable. Don't be afraid to think outside the box; this pond liner is a fantastic choice for your next garden project. ## Frequently Bought Together - UWIOFF 10 x 13 FT Pond Liner, 20 Mil Pond Liners for Outdoor Ponds, Black Fish Pond HDPE Liner for Koi Ponds, Streams Fountains and Garden Waterfall - POND BOSS Waterfall Spillway, 8 inch Wide Weir, Waterfall Box, Smooth Flow, Durable Construction, Easy to Install, Great for Waterfalls, Pondless Water Features and Streams --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ie/products/209437365-pond-liner-20-mil-hdpe-pond-liners-for-outdoor-ponds](https://www.desertcart.ie/products/209437365-pond-liner-20-mil-hdpe-pond-liners-for-outdoor-ponds) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-09-16*