How to Calculate Pond Liner Size

Pond Liner Size How to calculate pond liner size

How to Calculate Pond Liner Size

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



Water Garden Pond Liner Size Add double the depth to your dimensions

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.



  • Water Garden Pond Liner Size Add double the depth to your dimensions plus two



    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.


    Hybrid/Crossover Pond Liner Size Add double the depth to your dimensions

    Hybrid 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.




  • Hybrid/Crossover Pond Liner Size Add double the depth to your dimensions plus two



    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.


    Koi Pond Liner Size Add double the depth to your dimensions

    Koi 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.




  • Koi Pond Liner Size Add double the depth to your dimensions plus two



    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.


    Miss Russell Koi and Pond Liner Size Calculating pond liner size is easy

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

    Add 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.




    Top of Pond Liner Size Page