Measuring tips

Inground Pool Liner Measuring Tips

Some liner dimensions are easy to reach. Others are down in the hopper, at the wall, or below the water line. These tips show how to use simple tools to capture those measurements accurately.

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Video help

Watch the measuring overview

Review the videos before taking measurements, then use the written tips and the matching shape form while you work around the pool.

Use a pole and plumb bob for hard-to-reach distances

To measure from the hopper edge to a side wall, feed the plumb bob string through the hole at the end of the skimmer pole. Lay the pole on the deck at the deep end and extend it perpendicular to the end of the pool. When the plumb bob is at the point where the floor and wall meet, mark the pole at the coping edge. Place the pole on the deck and measure from that mark to the string hole.

Using a pool pole and plumb bob to measure pool distances

Measure inaccessible depths from the water line

Lay the pole on the deck and extend it until the plumb bob just touches the bottom. Note where the string enters the water, then remove the pole and measure from that point on the string to the end of the plumb bob. Add the distance from the water surface to the liner track. The total is the actual pool depth at that location.

Using a pool pole and plumb bob to measure pool depth

Record the wall-to-floor transition correctly

Shallow-end wall measurements depend on how the wall meets the floor. For a 90-degree corner, measure from the liner track to the pool floor in two or three locations. For a 45-degree transition, measure from the liner track to the top of the angle. For a radius, measure from the liner track to the top of the radius. Take multiple measurements so the final dimensions are accurate.

Pool wall-to-floor transition measuring diagram

Measure the radius of rounded pool corners

Extend the two straight pool walls until they meet at an imaginary square corner. Mark point A where the rounded corner begins and point B at the imaginary corner. Measure the straight distance from A to B to find the corner radius. Check more than one corner because the measurements may vary.

Diagram showing how to measure the radius of a rounded pool corner

Before submitting measurements

Measure carefully, then double-check the form

A custom liner is built from the dimensions you provide. Before you send the form, make sure every required dimension is filled in, the units are clear, and unusual floor or hopper details are noted.

Measure in more than one location when the wall or floor may not be even.
Use the shape-specific form from the measuring guide.
Write inches clearly so values like 28'-11" are not misread.
Call 800-982-6966 if a dimension does not match the form.

Ready for the next step?

Pick the closest measuring form, collect the dimensions, then continue into the quote flow when you are ready to price the liner.

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