Step 1- Measure your Swimming Pool
before purchasing a cover . Your measurements need to be as accurate as possible. It is nearly impossible to find a cover that fits your pool perfectly, and therefore it needs to be cut to the right size after purchasing it. Measure your swimming pool at its longest point and widest point in case your pool is shaped other than a rectangle.
With the help of another person, lay your cover across your pool with the bubble side facing down. Smooth any folds or wrinkles by hand. Using a crayon, mark the pool sides on your cover. If your pool is curved you need to mark all the sides and edges carefully.
Cut along the markings you made on the cover using a sharp pair of scissors. As a precaution, cut ¼- inch over the markings you made.