Liners must follow the bottom and sides and still reach past the edge. Your liner size comes out in one line.
How it works
Liner length = pond length + 2 × deepest depth + 2 × overlap. Liner width uses the same formula.
Before you order
- Use the deepest point even if most of the pond is shallow.
- Add underlayment to protect liners from rocks and roots.
- Fold neatly at corners, and let the water weight seat it.
Common questions
How much overlap should a pond liner have?
About 1 to 2 feet on every edge.
Can I join two pond liners?
Yes, with products made for that liner type, though one piece is simpler.