Robelle 21 ft Winter Pool Cover for Above-Ground Pools — Navy/Black Solid Polyethylene with Winch & Cable

The Robelle 21 ft Economy Winter Pool Cover is a solid polyethylene cover designed to protect 21-foot round above-ground pools through the off-season, offering a 3-foot overlap, included winch and cable, and an eight-year warranty.

When you need a straightforward, durable winter cover for a traditional above-ground pool, this Robelle economy model delivers a no-frills barrier against snow, ice and debris. Built from a 2.2 oz/yd2 polyethylene woven with a 7 x 7 scrim, the cover balances affordability with long-lasting performance. It comes in navy blue on top with a black underside and is sized so installers can secure it with the supplied winch and cable through reinforced grommets.

How does this cover protect my pool during winter?

This solid cover blocks precipitation and falling debris from entering the pool water, reducing winter maintenance and contamination. Unlike mesh covers, it does not allow water to pass through, so most surface runoff and organic matter remain out of the pool.

• Solid polyethylene material prevents leaf and dirt entry.
• 7 x 7 scrim provides a tight woven structure for strength.
• Navy topside and black underside reduce light penetration and algae growth.
• Designed to resist snow and ice loading throughout the season.

Will this cover fit my above-ground pool and how is it installed?

The listed 21 ft size includes a standard three-foot overlap, giving a 24 ft overall cover diameter to wrap over rails and accommodate typical installations. Use the included winch and cable to tension the perimeter cables through the grommets; additional clips or cover wrap can be added for extra security.

• 21 ft cover size fits 21 ft round pools with a 3 ft overlap (total cover 24 ft).
• Winch and cable are included for anchoring through the grommets.
• For large top rails or heavy deck profiles, choose the next size up.
• Cover clips and cover wrap are recommended (sold separately) for added hold-down.

How durable is the Robelle economy cover and what warranty does it have?

Robelle engineered this economy cover to exceed industry standards by using material 10% heavier than typical competitors at 2.2 oz./yd2 and a 7 x 7 scrim. The product is backed by an eight-year warranty covering manufacturing defects, reflecting the brand’s long history making pool covers since 1973.

• Standard polyethylene at 2.2 oz/yd2 for improved tear and wear resistance.
• 7 x 7 woven scrim increases tensile strength and durability.
• Manufacturing quality backed by an eight-year warranty.
• Constructed to perform in higher wind conditions when installed correctly.

What installation tips improve performance and seasonal longevity?

Install the cover so it can float loosely on the pool surface to avoid stress points; if your pool has a tall top rail or bulky deck, step up to the next cover size. Place vinyl water weights on top of the cover over decks, and run the cable under the deck where possible to keep tension even and prevent wind lifting.

• Allow the cover to float slightly on the water; do not stretch tightly.
• Use water weights on decks and winch/cable around the perimeter for balance.
• Consider an ice equalizer pillow (sold separately) in freezing climates.
• Avoid using this cover as a seasonal debris cover during swim season.

Who is this for: The Robelle 21 ft Economy Winter Pool Cover suits pool owners with a 21-foot round above-ground pool and a traditional top rail who want a cost-effective, solid winter barrier. It’s ideal for homeowners seeking easy installation with included winch and cable, durable woven polyethylene construction, and a lengthy eight-year warranty from an experienced pool-cover manufacturer. Choose a larger size if your installation has oversized rails or a raised deck to ensure proper overlap and floating clearance.