20 mil vs 27 mil pool liner - Which one should you buy?

If you're standing in your backyard looking at a faded, leaky mess, you're probably trying to decide between a 20 mil vs 27 mil pool liner for your upcoming renovation. It's one of those choices that seems simple until you start looking at the price tags and listening to conflicting advice from your pool guy and your neighbors. You want something that's going to last, but you also don't want to set a pile of money on fire if the extra thickness doesn't actually provide a real benefit for your specific situation. ...

February 6, 2026 · 7 min · Fedrizzi Boncelet