Solar Pool Cover 20ft x 40ft Rectangle 12 Mil Solar Blanket - Warmth

In this review of the 20' x 40' 12 mil solar blanket, the bottom line is simple: it is a practical, cost-conscious choice for pool owners who want to retain heat and cut water loss without complicated installation. The cover is best for people with rectangular inground or above ground pools who value straightforward handling and trimming to fit; the single biggest reason to buy is its combination of effective heat retention and evaporation reduction, which together make the pool more usable and less maintenance-heavy.

Key Features

• 12 mil thickness: Provides a durable surface that helps collect and retain heat so the pool stays warmer into the evening.
• Reduce water evaporation: Limits water loss by preventing up to 95% of evaporation, which reduces the need for frequent refills and saves water over the season.
• Durable blue design: The attractive blue color blends with pool surfaces while offering a functional barrier against sunlight and heat loss.
• Versatile use: Works with inground, above ground, irregular shapes, and even hot tubs, giving owners flexible coverage options for different pool types.
• Easy to customize: Can be trimmed with a marker and sharp scissors for a tailored fit, with the bubbles placed face down for correct performance.
• Debris barrier: Keeps leaves and dirt out of the water to reduce manual cleaning and help maintain water clarity.

Who It's For

This cover suits backyard pool owners who want a simple, no-frills way to keep their water warmer and cut evaporation without professional installation. It is especially useful for those with rectangular pools who are comfortable trimming a sheet to size for a close fit.

Those who need a heavy-duty, long-term commercial solution or a model with integrated reels or straps should look elsewhere; the product is aimed at homeowners seeking value, ease of use, and solid heat retention rather than an all-in-one mounting system.

Pros & Cons

Pros

• Effective at warming pool water and slowing overnight temperature drops, improving swim comfort.
• Reduces water evaporation significantly, saving water and refilling effort.
• Acts as a practical debris barrier to limit leaves and dirt entering the pool.
• Customizable trim makes it adaptable to irregular shapes and hot tubs.

Cons

• Thickness feedback is mixed; some buyers report it feels heavy-duty while others expect a more robust, longer-lasting material.
• No included reel or attachment system, so handling and storage require extra equipment or effort.

Specifications

Product type	Solar pool cover / blanket
Size	20 ft x 40 ft rectangle
Material thickness	12 mil
Color	Blue
Compatible pools	Inground, above ground, irregular shapes, hot tubs
Primary benefits	Heat retention, evaporation reduction, debris barrier

Our Verdict

The 20' x 40' 12 mil solar blanket is a sensible buy for homeowners who want an affordable way to keep their pool warmer and reduce evaporation. It offers good value when trimmed to fit and serves well as a debris barrier, though buyers seeking heavy commercial durability or mounting accessories will need to budget extra. Overall, it is a practical, cost-effective solution that improves pool comfort and lowers maintenance.

Frequently Asked Questions

Can this cover be trimmed to fit a non-rectangular pool?
Yes; mark and cut along the guideline and place the bubbles face down for the intended fit and performance.

How much evaporation does it prevent?
The cover is designed to prevent up to 95% of pool water evaporation when used correctly, reducing refills.

Is the cover compatible with hot tubs?
Yes; the versatile design works for small hot tubs as well as above ground and inground pools.