Final Pool Roundness

by Craig
(Sault Ontario Canada)

Hi, your site is great.
I have a 20' Sharkline Matrix that is filling and at 2/3 full, it is filling at 1/4 inch of level but when I measure the perimeter of the rails it is out by two inches (or 1 " depending on how we look at it). Measure at 3 cross sections I get 19'4", 19'6", 19'4".

Should I be worried here or is this within normal specs?



Hi Craig. I don't know how you installed the pool but if you started with a round bottom rail you should have nothing to worry about. You overall level sounds great so it appears you probably did a very good install.

The specs you gave seem very reasonable for top rail variance. So much of that is determined by how the top rails are screwed into place. Sometimes just loosening the screws and giving the top a little push, or shove, will fix the problem.

Another factor that effects the final roundness of the top rails is the level of the bottom plates. Overall you are just fine, but if you have two uprights that are spot on and the one between them a 1/4" low, that post will tend to bow out a little at the top. That's the small variance that can be fixed by resetting the top rail screws, or possibly lifting the footplate a hair. The center post being a quarter high will have the opposite effect, it will push in at the top.

It is probably just a matter of looks, and if you don’t notice anything you don't like, then you don’t need to try to fix it. The measurement across the top is not one I have ever used before to tell me if a pool is safe or not. If you started with a round bottom rail, and the pool visually looks fine, then simply enjoy the rest of your summer.