Winterization of your pool may be required if your pool water is subject to freezing winter temperatures or the cold temperature region you live in dictates that you must winterize your pool. Your pool builder, applicator or service professional may recommend the pool should be drained as part of the winterization process, which often results in the exposing of the finish to the harsh environment for long periods of time. As a consequence, there is a high risk of experiencing rock loss, cracking, delamination and/or debonding of the finish due to freezing and thawing process, which is NOT covered by the PTI warranty. We strongly advise you to ask your certified builder or authorized applicator for advice before draining your pool.