Measuring Liners

  • The quality of the liner's fit will be directly related to the completeness and care taken in measuring. 



    Never take any measurements or dimensions for granted.  Considerable time and dollars are lost because a homeowner incorrectly identifies his pool or a contractor assumes that a nominal 16' x 32' pool is exactly 16'0" x 32'0".  Dimensions vary among manufacturers and some installers make changes during the original installation of the pool.

    You should measure, record and order your liner on the basis of exact finished dimensions of the pool or the exact finished dimensions you are planning to use.  From that point on leave the rest up to The Vinyl Works.  They will tailor-make the liner for a proper fit. The proper procedure for measuring a typical pool for a liner is as follows:

  • :
  • Standard Hopper Measurements






    A.  Pool Width — Measurements should be taken at both ends and at the middle of the pool to detect any bowing in the side walls.

    B.  Pool Length — Use same procedure as "Pool Width" above.

    Diagonal MeasurementsDiagonals — Measure diagonals from corner to corner to check the square of the pool.  A difference of more than 2 inches should be noted.








  • C.  Sidewall — This is the depth from the top of the liner to the point at which the bottom meets the vertical pool wall.  Also referred to as "Finished Wall Height".  See Liner Considerations-Sidewall for more details.  Measure this at three points:  shallow end wall, deep end wall and at the break-over.  Variations should be noted.

    D.  Length of Shallow End — Shallow end wall to break-over.

    E.  Slope — Length from break-over to hopper pad.

    F.  Hopper Pad Length — Length of the hopper pad.

    G.  Back Wall — Slope from hopper pad to deep end wall.

    H.  Hopper Pad Width — Width of the hopper pad.

    J.  Side Slopes — Slopes on each side of hopper pad from hopper pad to side walls.

    K.  Pool Depth — The distance from the bottom of the hopper pad to the bead of the liner.

    NOTE:  All measurements except C and K are horizontal, that is, flat.  Therefore, dimensions D + E + F + G must = B and J + H + J must = A.  This serves as an excellent way of checking the accuracy of your measurements.

    The same techniques are used for other Bottom Styles.

    When measuring pool corners, measurements should be taken as indicated below.  Also, see pool shapes.

  • Corner Types





    Please refer to Steps, Cuddle Coves & Benches and Spas and Waterfalls for full details of these additions.  All measurements for these items should be taken within a least 1/4 of an inch for optimum fit.

    Diagonal Conversion Chart For Grecian Pools (click picture below to view)

    Click Here to View Diagonal Chart

  • Measuring Freeforms

    Measuring Freeforms - Step 1

    1ST STEP  Establish two stakes that are a minimum of 15' apart and at least 1/2 of the length of the pool.  These stakes should be at least 3' from the pool at the closest point. 




    Measuring Freeforms - Step 2

    2ND STEP  Label one of the stakes "A" and the other "B".  These stakes will be used as reference points and should be left at the pool sight for a few days because you may have to go back and recheck measurements (be sure to pound stakes to ground level before you leave the yard).





    Measuring Freeforms - Step 3

    3RD STEP  Make a hand sketch of the shape and direction of the pool you are measuring.  Label which end is the shallow end and which is the deep end.  Also include rough location of any stairs, swim-outs, cuddle coves etc. on the same sketch.





    Measuring Freeforms - Step 4

    4th STEP  Mark the coping of the pool with temporary marks (colored chalk, etc.) as reference points every three feet around the perimeter of the pool.  Use smaller 1 foot to 2 foot intervals in small or tight radius areas.  Make sure to locate a mark or point on any sharp reverse corners.  You must pull the tape straight between these 3 foot intervals, do not bend the tape into radiuses.  The last point you mark on the coping may not equal 3 feet.   Please record that measurement on your drawing.  It is also a good idea to leave the marks you made on the coping in case you have to go back to the pool to recheck or get other measurements. 



    Measuring Freeforms - Step 5

    5th STEP  Label each mark (also called points) with a number and locate these on the sketch you made of the pool starting with your first mark and working your way around the pool & sketch. (Example:  Label first mark #1, second mark #2 and so on.)





    Measuring Freeforms - Step 66th STEP  Now, measurements are needed from each stake to each point (mark) on the coping.  Start from stake "A" and measure to reference point #1 - record this measurement then measure to point #2 record measurement and so on until you have gone around the pool and have recorded each measurement.  Repeat this same procedure from stake "B".  Starting from the first point and recording your measurements.  Use a column format to record these measurements or download our Freeform Measuring Form .  NOTE:  A-B line must never cross the pool perimeter.






    Measuring Freeforms - Step 77th STEP  Take measurements to each of the four corners of slope or transition of pool.  Use letters at these points instead of numbers. 








    Measuring Freeforms - Step 88th STEP  Your should include the measurements for the side grades of the hopper and bottom pad width and length.  Note:  You will also need to fill out a liner order form (to include pattern selection, sidewall, depth, etc.).  You may download the Freeform Liner Order Form  you may also download step, cuddle cove, etc.  forms by going to  liner order forms.  Finally, using the numbered points on the pool (point to point) measure the overall length and width of the pool.  Additional cross dimensions can be very helpful on difficult pools.