Why Do I Need A Hot Tub Cover? | Spa Covers Etc.
Why do I need a hot tub cover? Portable Spas - Fiberglass / Acrylic Spas / Hot Tubs If your spa / hot tub is made of fiberglass or acrylic, you MUST cover it because the sun's UV rays will damage all areas above the waterline. "Spider web" type cracks will begin to appear and they will eventually turn into cracks that cause the tub to leak. Plaster Spas (aka Gunite) Plaster spas (a type of cement) does not require a cover to protect it from the sun. The tile @ the waterline is designed to protect the plaster as the water level fluctuates from evaporation. But plaster spas do benefit from a cover (see below) and may be required by law in your state. Reasons To Cover Your Spa / Hot Tub 1) Local state ordinance may require that your cover is ASTM approved to be a child safety cover that is lockable. 2) Portable spas / hot tubs use electric heaters and are NOT able to raise the temperature of cold water to 104 degrees without a cover. 3) Users of portable sp