It is easier to measure a pool when it is full of water. It is best if the water is clear so you can see the break points. If the water is green and you can’t see the bottom, the following instructions still apply, but you will have to feel for the breaks with the vacuum pole. If you can’t feel where the breaks are, drain the pool. These instructions apply even is the pool is empty.
After you have completed filling out the liner order form, transfer this information to the uploadable form on the website and give us your contact information. We will call you and go over the information to verify accuracy. We will also help you determine which gaskets, faceplates, screws, etc you may need to complete the job. We are always available by phone 8 to 5 Mon thru Fri. if you have questions during the installation.
The first thing to be done is establish 2 points, an A point and a B point approximately 5' from the edge of the pool. The points should be roughly 2/3 of the length of the pool apart. If, for example, your pool is 40' long your distance between A and B should be about 26' apart. The points should be on a flat surface.
Your A and B points if extended with an imaginary line from both ends should not cross the pool at any point. If this line does cross the pool you will have to adjust your points.
To establish your perimeter points mark the points approximately 2' apart along the coping. The distance between points can vary. If you are marking points around a sharp radius you want to mark the points closer. If you are marking points along a straight section you can mark them further apart.
It is important that you mark transition points where a radius starts or ends and also where two straight sections come together at an angle. If your pool has a step or a step cut you need to mark where the step starts and ends.
To help establish the bottom dimensions you need to extend a line across the shallow end break and also across the hopper break line. Mark these points where they meet with the perimeter. One of the shallow end points should be used as point number 1. The other 3 points should be labeled X, Y, and Z. The remainder of your points should be numbered sequentially starting at point number 1.
When measuring your points, it is important to make sure that you measure in a straight line, do not bend the tape measure around objects. Make sure that the tape measure is pulled tight. You can round your measurements to the nearest inch.
Measure from point A to all points on the perimeter and then from point B to all points on the perimeter. You will also need to find the overall length and width of the pool. To do this you will need to pick a point in the shallow end and a point in the deep end. Select points that will best approximate the overall length of the pool. Note which points were used and what the measurement was. Use the same method to find the overall width of the shallow end and deep end.
It is best to leave your points including the A and B points until the liner is installed. That way if there are questions or problems we can refer back to the original points.
To help establish bottom dimensions, make sure to mark points where the break begins and ends. When measuring the back and side slopes use a point to measure from. Note which point was used and measure straight out from that point. Take depth measurements at the back of the hopper where the back wall starts and the sides of the hopper where the side walls start. Measure the depth of the shallow end and note if there is a cove or if the shallow end is not flat.
When measuring a pool it is helpful to "square up" radius or grecian (diagonal) corners. This becomes crucial when measuring True-L or Lazy-L pools, or when taking diagonal measurements. By squaring up the corners, you accomplish four things.
To square up a corner you need to extend the straight wall past the corner by snapping a chalk line. You need to do the same with the other straight wall that makes up the corner. Make sure to line up the string for the chalk line with the bead track. Do not line it up with the edge of the coping since the bead track is not right on the edge. Where your two chalk lines intersect should be used as your point of reference for measuring.
Roman End pools require more measurements than an ordinary rectangular pool. This involves measurements for both radius ends, all corner sections straight walls and hopper dimensions. See illustration 1 for perimeter measurements that should be taken.
On most Roman End pools with oval shaped hoppers additional measurements are needed. If there is a straight section on either side of the hopper we need to know what the straight section measures.