What is the purpose of a pillow under a pool cover?

The Purpose of a Pool Air Pillow By placing an air-filled pool pillow under your winter cover, you create a void in the water and on the top of the cover. When rain, snow, and ice accumulate, and pressure builds on the cover, the ice will expand inward toward the pillow.Click to see full answer. Consequently, should I use a pillow under my pool cover?We strongly recommend using an air pillow under your winter cover. The first reason to install a winter cover air pillow is to protect your pool from expanding ice. Instead, the weight of the water is evenly distributed around air pillow. This weight distribution can prevent the cover from sinking or tearing. how do you use an air pillow in the pool? Using Your Air Pillow You should inflate the air pillow to about 60% of its capacity to allow for compression. You should also place two strips of duct tape over the air valve to ensure the pillow doesn’t deflate over the winter. The air pillow will be more effective if it remains in the center of the pool. Likewise, people ask, what is the purpose of an air pillow in a pool? The main purpose of an air pool pillow is to protect your pool from expanding ice. Remember that if you do not use an air pillow, your winter cover will stay right on the top of the water and the ice will surely expand outwards.Does an above ground pool freeze solid?Aboveground Wall Collapse: If a pool begins to leak water, while the winter pool cover is frozen solid into the ice sheet – either the cover will rip, or the pool walls will collapse inward. Water expands about 9% when it freezes, so use enough Air Pillows to cover about 10% of the pool surface area.