Solar covers float on the water to cut evaporation and add heat, but are not safety covers. Winter covers keep debris out in the off-season. Safety covers, mesh or solid, are anchored to the deck and built to the ASTM F1346 standard to hold weight and prevent a child from slipping under. Automatic covers combine heat retention and safety at the push of a button, at the highest cost.
A cover can save heat, water, chemicals and lives, but only the right type for the job.
Types
| Cover | Main job | Safety barrier? |
|---|---|---|
| Solar (bubble) cover | Retain and add heat, reduce evaporation | No |
| Liquid solar cover | Thin surface layer to slow evaporation | No |
| Winter tarp | Keep debris out off-season | No |
| Mesh safety cover | Anchored, holds weight, drains rain | Yes, if ASTM F1346 |
| Solid safety cover | Anchored, blocks light and debris | Yes, if ASTM F1346 |
| Automatic cover | Heat, debris and safety on a track | Yes, if ASTM F1346 |
Choosing
- For heating savings, use a solar cover in season; see heat pump vs gas heaters.
- For off-season closing where children or pets live nearby, use an anchored safety cover.
- For daily convenience plus safety, consider an automatic cover if your pool shape allows it.
Safety layers
Covers are one layer of protection. The CPSC also recommends fencing with self-closing gates, alarms and supervision. Check your local pool barrier code.
Browse cleaning and covers.
Common questions
Is a solar cover a safety cover?
No. Solar covers float on the water and can trap a person underneath. Never treat one as a safety barrier.
What is ASTM F1346?
The US performance standard for pool safety covers, including weight-bearing and gap requirements.
Mesh or solid safety cover?
Mesh lets rain drain through and is lighter. Solid blocks sunlight and fine debris, keeping water cleaner, but needs a pump for standing water.
Do pool covers save money?
Yes. Covers cut evaporation, which reduces heat loss, water top-ups and chemical use.