Robelle 20 x 40 ft Pool Winter Cover, Professional Supreme Blue Solid Heavy-Duty with 15-Year Warranty

Robelle's Professional Supreme Blue 20 x 40 ft solid winter cover is a heavy-duty inground pool cover built to shield your pool from snow, ice, and winter debris with a five-foot overlap and a 15-year warranty.

Designed for inground pools, this Robelle cover uses a dense 12 x 12 scrim and a sturdy 3.7 oz./yd² polyethylene fabric to provide long-lasting, season-long protection. It is a solid winter cover (non-permeable) with a black underside and includes sewn-in loops for water weights (sold separately) to secure the cover around the perimeter. The listed 20 x 40 ft size includes a five-foot overlap on each side, giving a finished overall dimension of 25 x 45 ft to simplify installation and accommodate typical pool edges.

How does this cover protect my pool through the off-season?

The solid design prevents rainwater, leaves, and sunlight from entering the pool, slowing algae growth and minimizing maintenance at spring opening. Its dense scrim and heavier fabric resist tearing under winter load and abrasion from ice and snow.

• Solid, non-permeable material blocks water and debris.
• 12 x 12 woven scrim increases puncture and tear resistance.
• 3.7 oz./yd² polyethylene offers heavier-duty protection than standard covers.
• Black underside reduces light transmission and algae stimulation.

What size should I order and how does the five-foot overlap work?

Order the cover that matches your pool’s advertised dimensions (20 x 40 ft). Robelle adds a five-foot overlap to the cover so you get enough material to attach water weights and make installation easier. If your pool has elevated steps, tanning ledges, or irregular shapes, choose the next larger standard size to ensure proper float and coverage.

• Cover marked 20 x 40 ft equals an actual 25 x 45 ft with overlap.
• Overlap provides extra material for water weights and secure fastening.
• Pick a larger size if you have protruding steps or seating features.
• Fold excess material under water weights to avoid deck overhang.

How is this cover installed and what do I need to secure it?

Robelle recommends using vinyl water weights placed through sewn perimeter loops to fasten the cover; no other anchoring method is advised. The cover should float loosely on the water surface so it can handle seasonal expansion and contraction without stress on seams.

• Sewn-in loops accept water weights (sold separately) around the perimeter.
• Only water tubes or weights are recommended for installation.
• Cover must float without excessive tension on seams.
• Pad cover where it contacts sharp corners or decking to prevent abrasion.

How durable is the Robelle Professional grade compared with standard covers?

This model is engineered notably heavier and more durable than common consumer covers, combining higher material weight and a tighter scrim count to extend service life. Robelle backs performance with a 15-year warranty, reflecting the brand’s decades of pool-cover design experience.

• 3.7 oz./yd² polyethylene material—heavier than many alternatives.
• 12 x 12 scrim provides stronger tear resistance and stability.
• Constructed to withstand snow and ice pressures during winter months.
• 15-year warranty supports long-term use and reliability.

Who this cover is for: Pool owners with rectangular inground pools measuring 20 x 40 ft who want a professional-grade winter solution that minimizes debris and water intrusion. It's ideal if you prefer a non-permeable cover with generous overlap for easier installation, long-term durability, and strong warranty protection. Choose a larger size if you have steps, ledges, or other protrusions that require additional coverage; remember to purchase vinyl water weights separately to properly secure the cover.