Robelle 21 ft Blue Winter Pool Cover - Solid 7x7 Scrim, 8-Year

Our review of the Robelle 21 ft Blue Winter Pool Cover finds it best suited for above-ground pool owners who want a simple, solid winter barrier that stays secure through winter weather. The single biggest reason to buy is its combination of practical installation features and a heavier-than-standard build: a 3 ft overlap (24 ft cover size) plus an included winch and cable make it easier to tension and secure the cover, while the 2.2 oz/yd2 polyethylene with a 7 x 7 scrim gives it a step up in expected durability compared with economy covers.

Key Features

• Size and overlap: The 3 ft overlap provides extra material beyond a 21 ft pool, making positioning and anchoring simpler and reducing stress on the seams.
• Included installation kit: A winch and cable come with the cover so you can tension it through the grommets without buying additional hardware.
• Solid construction: The solid navy top with black underside prevents water from passing through and keeps winter debris out of the pool.
• Material weight and scrim: The polyethylene at 2.2 oz/yd2 woven with a 7 x 7 scrim is 10% heavier than industry standard, which improves tear resistance and expected life.
• Wind performance: Designed for high wind areas when installed with the winch and cable or water weights, making it suitable for exposed yards.
• Warranty: Backed by an 8-year warranty, offering longer-term protection compared with many economy covers.

Who It's For

The Robelle 21 ft Blue Winter Pool Cover is ideal for owners of 21 ft round above-ground pools who need a winter-only, solid cover that resists snow and ice buildup and stays in place when properly installed. It fits best for pools with standard top rails and for owners who want an included winch and cable to simplify setup.

Pool owners seeking a heavy-duty, multi-season debris cover or a thicker commercial-grade tarp should look elsewhere. Also, if precise custom sizing or a significantly thicker material is required, consider premium covers designed for extreme durability.

Pros & Cons

Pros

• Included winch and cable make tensioning straightforward and reduce the need for extra tools.
• Solid design keeps winter precipitation and debris out of the pool for the off-season.
• Material is 10% heavier than standard and uses a 7 x 7 scrim, improving expected longevity.
• 8-year warranty offers extended peace of mind compared with many economy options.

Cons

• Some users find the material thin for heavy wear situations, so it may not meet expectations for extreme durability.
• Sizing can be tricky for pools with large top rails; consider ordering one size up in those cases.

Specifications

Designed pool size	21 ft round
Cover size including overlap	24 ft
Overlap	3 ft
Material weight	2.2 oz/yd2 (74 g/m2)
Scrim	7 x 7 woven
Cover type	Solid winter cover (navy top, black underside)
Warranty	8-Year

Our Verdict

The Robelle 21 ft Blue Winter Pool Cover is a practical, value-oriented winter solution for standard above-ground pools that benefits from an easy tensioning system and a slightly heavier material than typical economy covers. It represents good value for seasonal protection and for buyers who prioritize a secure fit and included installation hardware, though those needing the thickest, most rugged cover should evaluate heavier premium options.

Frequently Asked Questions

Will this cover let water drain through?
The cover is a solid winter cover and does not allow water to pass through its material; surface water must be removed from the top or managed with water bags.

Does it include installation hardware?
Yes, the cover includes a winch and cable to secure the cover through the grommets for tensioning.

Should I size up if my pool has a top rail?
Yes, if you have large top rails or need extra slack to allow the cover to float loosely, consider ordering the next size up.