carpenterpi

Kind of cold here in Colorado

I suspect I'll find many other missing items (car keys, flashlight, old pocketknife, my sanity ... etc) down there if I can ever figure out how to explore the depths of that damned crack... Don't forget the sock the washer/dryer seem to always take. It must have been the crack all along.

The use of a "solar" blanket in an application that can collect absolutely zero btu's from the sun is somewhat humorous to begin with. So far as what it is doing for you and your spa is functional but limited. The only heat loss prevention will be a reduction of evaporative loss. As far as adding any "r" value, for preventing conductive loss, no way. Remember its original design is to transfer heat to a swimming pool from the sun. If your ph/alk gets far out of balance or you accidentally over clorinate have fun cleaning all the little "spots" that will start to peel off the blanket. This prevention of evaporation does help prevent the cover (foam insulating) from absorption issues and probably will increase it's life. Which is more than likely the most significant impact the consumer will realize.