Liner size - what size liner do I need for my pond?
How to Calculate Pond Liner Size

What size pond liner do I need?

In simple terms, your pond liner size is always "double your depth added to your dimensions plus a safety overlap".


Liner Dimension Calculations for any type of water feature:
Length + 2x Depth + 2' Safety Overlap = Liner Length
Width + 2x Depth + 2' Safety Overlap = Liner Width

Liner size - water garden pond depth

Water Garden Pond Liner Size

To calculate your pond liner size for a water garden pond:

  • Measure your widest WIDTH
  • Measure your longest LENGTH
  • Measure your deepest DEPTH
  • Add Safety Overlap of 1' on each side of pond - or simply 2' to each dimension.





  • Liner size - water garden pond widght
    Example:

    Your Water Garden Pond is going to be 17' long by 12' feet wide, with a maximum depth of 2'.

    Add "Double your Depth" to each dimension to accommodate the vertical walls in the pond. (2 x 2 = 4) So the dimensions adjusted for depth are now 21' long and 16' wide. (17 + 4 = 21 and 12 + 4 = 16)

    Now add a "Safety Overlap" of 2' to each of those dimensions. (21 + 2 = 23, and 16 + 2 = 18). Your 17' long by 12' wide pond with a 2' depth and 1' of Safety Overlap on each side would need a 23' x 18' liner.

    Liner is sold in 5' increments - so you would purchase a 25' x 20' liner for this pond.

    Another example:
    11'l x 8'w x 2'd Water Garden Pond
    (2' depth x 2 = 4)

    Add double the depth to each dimension and add 2' of Safety Overlap to each dimension.
    11 + 4 = 15. For overlap add; 15 + 2 = 17 total length.
    8 + 4 = 12. For overlap add; 12 + 2 = 14 total width.

    Purchase a 20' x 15' Liner for an 11' x 8' pond @ 2' deep.



    Liner size - Hybrid pond deptherHybrid Pond/Crossover Pond Liner Size


    To calculate your pond liner size for a hybrid pond or a crossover pond:

  • Measure your widest WIDTH
  • Measure your longest LENGTH
  • Measure your deepest DEPTH
  • Add Safety Overlap of 1' on each side of pond - or simply 2' to each dimension.


  • Liner size - Hybrid pond width 

    Example:
    Your Hybrid Pond™ is going to be 14' long by 11' feet wide, with a maximum depth of 3'.

    Add "Double your Depth" to each dimension to accommodate the vertical walls in the pond. (3 x 2 = 6) So the dimensions adjusted for depth are now 20' long and 17' wide. (14 + 6 = 20 and 11 + 6 = 17)

    Now add a "Safety Overlap" of 2' to each of those dimensions. (20 + 2 = 22, and 17 + 2 = 19). Your 14' long by 11' wide pond with a 3' depth and 1' of Safety Overlap on each side would need a 22' x 19' liner.

    Liner is sold in 5' increments - so you would purchase a 25' x 20' liner for this pond.

    Another example:
    18'l x 14'w x 4'd hybrid pond or crossover pond
    (4' depth x 2 = 8)

    Add double the depth to each dimension and add 2' of Safety Overlap to each dimension.
    18 + 8 = 26.For overlap add; 26 + 2 = 28 total length.
    14 + 8 = 22. For overlap add; 22 + 2 = 24 total width.

    Purchase a 30' x 25' Liner for an 18' x 14' pond @ 4' deep.



    Liner size - koi pond depthKoi Pond Liner Size


    To calculate your pond liner size for a hybrid pond or a crossover pond:

  • Measure your widest WIDTH
  • Measure your longest LENGTH
  • Measure your deepest DEPTH
  • Add Safety Overlap of 1' on each side of pond - or simply 2' to each dimension.

  • Liner size - koi pond width


    Example:
    Your Koi Pond is going to be 14' long by 10' feet wide, with a maximum depth of 5'.

    Add "Double your Depth" to each dimension to accommodate the vertical walls in the pond. (5 x 2 = 10) So the dimensions adjusted for depth are now 24' long and 20' wide. (14 + 10 = 24 and 10 + 10 = 20)

    Now add a "Safety Overlap" of 2' to each of those dimensions. (24 + 2 = 26, and 20 + 2 = 22). Your 14' long by 11' wide pond with a 5' depth and 1' of Safety Overlap on each side would need a 26' x 22' liner.

    Liner is sold in 5' increments - so you would purchase a 30' x 25' liner for this pond.

    Another example:
    32'l x 21'w x 6'd Koi Pond
    (6' depth x 2 = 12)

    Liner sizeAdd double the depth to each dimension and add 2' of Safety Overlap to each dimension.
    32 + 12 = 44. For overlap add; 44 + 2 = 46 total length.
    21 + 12 = 33. For overlap add; 33 + 2 = 35 total width.

    Purchase a 50' x 35' Liner for a 32' x 21' pond @ 6' deep.


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