Best Ways To Get Wrinkles Out of Pool Liner Quickly and Easily Wrinkles in a pool liner are a common issue that can affect both the appearance and function of your pool. These unsightly folds or creases can form over time due to various factors, such as water chemistry imbalances, temperature changes, or improper installation. While wrinkles may seem like a minor annoyance, they can create potential long-term damage to the liner if not addressed, such as premature wear or tears.