ShadeMart 12ft x 20ft Grey Sun Shade Sail - UPF50 Rectangle Canopy

In this review of the ShadeMart 12' x 20' grey sun shade sail, the bottom line is simple: this is a durable, breathable rectangle canopy built for people who need reliable sun protection over patios, carports and pools without trapping heat. The reviewer found the woven HDPE fabric and stainless steel D rings give a robust feel, and the sail blocks up to 95% of harmful UV while remaining water and air permeable. If you want lower surface temperatures and a long-lasting fabric shade that breathes, this sail is worth considering.

Key Features

• Material: The woven HDPE fabric provides a strong, fade-resistant canopy that resists tearing under normal outdoor use.
• UV Protection: Blocks up to 95% of harmful UV rays and sunlight, noticeably lowering temperatures beneath the sail.
• Breathability: Water permeable and air permeable design lets rain and breeze pass through, reducing flapping and pooling.
• Hardware Quality: Corner D rings are stainless steel attached to heavy duty webbing for secure mounting to posts, trees or walls.
• Custom Sizing: Multiple custom sizes are available so customers can match odd-shaped patios or larger carports when measured accurately.
• Styling: Rectangle shape and neutral grey color integrate with many outdoor decors while serving as a decorative cover.

Who It's For

The ShadeMart rectangle shade sail is best for homeowners and renters who need broad sun protection over patios, pergolas, carports or poolside seating and prefer a breathable, low-heat solution rather than a waterproof canopy. It suits people who want a robust fabric option with solid attachment points and those who value UPF50 sun blocking.

Those who should look elsewhere include buyers who need full waterproofing for covered outdoor kitchens or who require a perfect machine-cut rectangle without any size variance; manual measurement tolerance means this product fits applications where small measurement variance is acceptable.

Pros & Cons

Pros

• High UV protection significantly reduces heat and sun exposure under the canopy.
• Breathable, water-permeable fabric prevents water pooling and reduces wind stress on anchors.
• Stainless steel D rings and heavy webbing provide secure, durable attachment points.
• Custom sizes make it flexible for many outdoor spaces and layouts.

Cons

• Not waterproof, so it will not keep the area dry in heavy rain.
• Some customers report size variances and shape differences due to manual measurements.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	12' x 20'
Material	Woven HDPE (High Density Polyethylene)
UV Protection	Blocks up to 95% of UV rays (UPF50)
Hardware	Stainless steel corner D rings with heavy duty webbing
Functionality	Water and air permeable (not waterproof)

Our Verdict

The ShadeMart 12' x 20' rectangle shade sail is a practical choice for anyone seeking effective sun protection that reduces heat and lets air and rain pass through. Its HDPE fabric and sturdy D rings offer solid durability and value for patios, carports and pool areas; just plan for non-waterproof coverage and confirm measurements before ordering a custom size.

Frequently Asked Questions

Is the sail waterproof?
The fabric is water permeable and breathable, so it will not provide waterproof coverage during heavy rain.

Can it be attached to trees and posts?
Yes, the stainless steel D rings and heavy webbing are suitable for mounting to poles, trees, walls or roofs with the proper hardware.

Will it block sun effectively?
Yes, the sail blocks up to 95% of harmful UV rays (UPF50), which helps lower temperatures under the canopy.