Robelle Heavy Duty Winter Pool Cover for Inground Pools, 18 x 40 ft Imperial Blue - Solid 8x8 Scrim

The Robelle 18 x 40 ft Heavy Duty Super Winter Pool Cover is a solid, heavyweight winter cover designed to protect inground pools from snow, ice, and debris throughout the off-season.

Built for cold-season protection, this Robelle Super Winter Pool Cover uses a heavy polyethylene fabric with an 8 x 8 scrim and a weight of 2.36 oz/yd² to deliver a durable barrier that resists punctures and stretches. The cover is a solid (non-permeable) design with an imperial blue topside and black underside, and it includes a generous five-foot overlap so the material extends beyond the pool perimeter for easier installation and secure water-weight anchoring.

How does this cover keep my inground pool safe during winter?

The Super Winter Cover blocks falling debris, limits sunlight exposure, and creates a barrier against snow and ice buildup on the water surface. Because it is a solid cover, rain and meltwater accumulate on top and are managed with water tubes rather than passing through the fabric.

• Solid polyethylene construction prevents water seep-through.
• 8 x 8 scrim provides reinforcement against tearing and punctures.
• Imperial blue top and black underside for UV resistance and discreet appearance.
• Designed to float loosely on pool water to reduce stress on anchors.

What are the material specifications and why do they matter?

This cover is woven with an 8 x 8 scrim and weighs 2.36 oz per square yard—metrics that indicate the fabric’s density and strength. Heavier material and higher scrim counts translate to longer wear and better resistance to winter conditions compared with thin, economy covers.

• 2.36 oz/yd² (approx. 80 g/m²) heavy polyethylene fabric for durability.
• 8 x 8 scrim (threads per square inch) increases puncture resistance.
• Manufactured 18% heavier than common industry standards for extended life.

How should I install and secure this winter pool cover?

Robelle recommends installing this cover using vinyl water weights placed in the sewn-in perimeter loops; these water tubes hold the cover down without stressing the material. The cover includes a five-foot overlap so it drapes beyond the pool edge—use that extra material to fold under or pad at corners to protect the cover where it meets decking.

• Includes perimeter loops sized for water weights (water tubes sold separately).
• Only water weights are recommended for secure, safe installation.
• Fold excess material under weights; pad exposed corners to prevent abrasion.
• Order a larger size if your pool has steps, benches, or irregular shapes.

What warranty and longevity can I expect?

Robelle backs this Heavy Duty Super Winter Pool Cover with a 10-year warranty, reflecting the brand’s five-decade pool-cover experience and higher material specification. Proper installation and seasonal care—storing the cover dry and protected—help maximize its service life.

• 10-year manufacturer warranty for peace of mind.
• Constructed to exceed industry weight standards for longer wear.
• Not designed for use as a swimming-season debris cover; intended for offseason only.

Who is this cover for? If you own an 18 x 40 ft inground pool and want a robust, solid winter cover that’s easy to install and built to last, Robelle’s Super Winter Cover is a strong choice. It suits pool owners who prefer solid covers that keep meltwater on top for managed removal, those who value thicker, reinforced fabric, and anyone seeking a cover backed by a multi-year warranty. Choose a larger size when your pool has steps or protrusions to ensure a loose, floating fit and to avoid excess stress on the material.