The Lifecycle Cost of Ball Covers

When people compare floating covers on price alone, they usually compare the wrong number. What matters is total cost of ownership over the life of the asset — and for a ball cover that calculation has several favorable terms.

The cost drivers

• Installation. Armor Ball® pours onto the surface tool-free — no anchors, cables, liner penetration, or draining, and no heavy equipment or specialized crews. That removes a large chunk of the cost that engineered covers carry.
• Maintenance. The cover self-adjusts to changing levels, isn’t damaged by ice or snow, and needs no maintenance — so there is no recurring service line item.
• Lifespan. A 25+ year design life and a 10-year warranty spread the up-front cost across decades rather than years. Thin commodity shade balls that last 3–10 years can cost more over time even at a lower sticker price.
• Reuse. Because the balls simply float, they can be recovered and redeployed — useful for temporary impoundments such as frac or produced-water ponds.
• Avoided costs. Water saved from reduced evaporation, energy saved from R-2 insulation, chemicals avoided in algae control, and reduced odor/compliance exposure all offset the cost.

A fair word on the 2018 critique

After the LA Reservoir deployment, a 2018 lifecycle-cost critique questioned whether shade balls were the most cost-effective way to save water in that specific case. It’s a legitimate analysis and worth engaging honestly rather than dismissing:

• That project’s primary purpose was bromate prevention, not evaporation savings — so judging it purely on water-savings economics misses its main goal.
• Reuse and long life change the math: balls that are recovered and last decades amortize very differently from a single-purpose, single-use assumption.
• For sites where coverage or wind drive the decision, a higher-coverage family member (hexagonal tiles up to ~99% coverage) may be the better economic fit — which is why AWTT offers a full range rather than one product.

The honest takeaway: a ball cover is often the lowest-cost, easiest-to-deploy option for the right site, but the right specification depends on your goals. Run the numbers for your own pond.

Run your numbers: Evaporation & ROI calculator · Heat-loss ROI · Coverage & units