Swimming pools blog

Our 18×36 inground Lazy “L” is in dire need or a new liner. Can
anyone provide insights as to what kind I should get. I just began
researching it and they seem to be available in 20, 27, and 30 mil
varieties. I assume these numbers have to do with the thickness or
strength of the liner. Also does anyone have an idea what I might
expect to pay for a liner of this size with installation, and how
long does the installation take? Any other advise for someone
replacing a liner? I’m a complete novice so any help is appreciated.