Pond Liners

A liner keeps pond water in the pond, so you are not constantly refilling after it seeps away into the ground. It also gives you freedom to shape the basin the way you want it.

Homeowners use pond liners for:

• backyard water gardens and koi ponds
• streams and pondless waterfalls
• custom basins with plant shelves and natural curves that rigid shells cannot follow
• rocky ground, where a flexible liner and a good underlayment are easier to work with than a rigid shell

A sealed basin also separates the pond water from the surrounding soil, which helps keep conditions steady for fish and plants.

Both products on this page are 45 mil EPDM rubber, so the real difference is how the material is packaged and sized.

Aquascape boxed pond liner

Choose a boxed liner when you are building a small to medium DIY pond and want a pre-cut sheet that is ready to lay without custom cutting. Boxed liner prices run from $196 to $1,225.

EasyPro DuraLiner roll

Choose a roll when the project is large or unusual in shape. Rolls suit big backyard ponds, long stream beds, and projects where you want to cut the liner to your own dimensions. Roll prices run from $800 to $8,000.

If you also need a skimmer, pump and filtration to go with the liner, start with our pond kits instead.

Measure the longest and widest points of the finished basin, plus the deepest point. Then add the depth twice on each dimension and leave extra material to anchor at the edges:

Max length + (2 x max depth) + overlap

Do the same for the width. A few notes that save trouble later:

• Measure the finished hole, not the pond surface, since the sides slope inward.
• Count on more overlap than you think you need. Edges get buried or tucked under rock.
• Long, irregular or multi-section ponds usually call for a roll rather than a boxed sheet.

For a fuller walkthrough, see How to Make a Pond Hold Water.