I have a Jandy heater that gets extremely hot in the middle of the afternoon. I don't know what the top of it is made out of, but the material get so hot in the afternoon sun that you get burned if you touch it. I can't imagine this would be good for the longevity of the unit... Could I cover it? Alternatively I was thinking about cutting out a car sun shade and velcroing it onto the top of the Jandy unit.