Arctic Armor Winter Pool Covers Design Information

You wouldn't think there would be much to making a winter pool cover - buy some fabric, sew it and sell it. But producing a winter cover isn't really that simple. There are substantial differences in the woven fabric used to make winter pool covers. The following commentary will try to provide some helpful information on winter covers.

The woven polyethylene fabric used to make winter covers has three main parameters: weave, denier, and coating.

    This refers to the density or number of individual plastic strands that comprise the fabric. Web refers to the number of strands per inch longitudinally. Weft refers to the number of strands attitudinally. Normally this is expressed as a material having a 12 x 11 weave or scrim - the material has 12 strands per inch up and down and 11 strands per inch across. The denser the weave the longer it takes to make and the more costly and stronger it is. Other parameters being equal, a 12 x 11 scrim is stronger than a 9 x 7 scrim.


    This measures the thickness of the individual strands comprising the weave. The higher the denier number the thicker and stronger the strand. Typically, the denier used in winter fabric is anywhere from 400 to 1200.


    The coating is a thin layer of pigmented plastic applied to both sides of the finished scrim to make it water proof. It is measured in mils and can be anywhere for 1/2 to 3 mils thick.


    The chief enemy of any plastic is the ultra violet rays of the sun. Unprotected plastic is quickly degraded and can be made brittle unless carbon black is added to the resin to block UV radiation. In pool cover material the individual plastic strands, as well as the synthetic thread used to sew the covers, should be black indicating that they are resistant to ultra violet light.


    The above factors determine the strength and durability of the winter pool covers you buy. The manner in which they are produced will directly effect how long your cover will last. Most importantly, this would suggest that winter covers produced from domestic versus imported materials are of better quality.