ShadeMart 11 ft x 20 ft White Sun Shade Sail Rectangle - UPF50

In this review of the ShadeMart 11 ft x 20 ft White Sun Shade Sail the bottom line is straightforward: this is a practical, heavy-duty shade solution for patios, carports and yards where UV protection and airflow matter most. The sail is made from woven HDPE fabric with stainless steel D rings and heavy white webbing, and it blocks up to 95% of UV while remaining water permeable, so it cools outdoor spaces without trapping moisture. Installers and homeowners who need a sturdy rectangle canopy will find the combination of durability and breathability the single biggest reason to buy.

Key Features

• Material: Woven HDPE fabric offers a durable, tear-resistant canopy that stands up to regular outdoor use.
• UV Protection: Blocks up to 95% of harmful UV rays and sunlight, helping lower temperatures by around 10-15 degrees under the sail.
• Hardware: Corner D rings are stainless steel and attached to heavy duty white webbing for secure anchoring.
• Breathability: Water permeable and breathable design allows rain and air to pass through, reducing pooling and wind load.
• Custom Size Option: Available in multiple sizes and custom orders so you can match nonstandard spaces when measured accurately.
• Styling: Rectangle shape in white that integrates easily with many outdoor decor schemes while providing large shaded coverage.

Who It's For

The ShadeMart 11 ft x 20 ft sail is ideal for homeowners who want solid sun protection over a patio, carport, pergola or pool area and value breathability to avoid trapped heat and water pooling. It fits users who prefer low-maintenance synthetic fabric and stainless-steel anchors that tolerate exposure and occasional severe weather.

It is less suitable for buyers who need a fully waterproof canopy or require a perfectly rigid rectangular form for precise architectural installs, since the fabric style is water permeable and customers report some variation in shape from manual measurements.

Pros & Cons

Pros

• High UPF sun protection reduces direct sunlight and lowers ambient temperature in shaded areas.
• Durable woven HDPE resists wear and, with stainless steel corners, stands up to extended outdoor exposure.
• Water permeable design prevents pooling and allows airflow, improving comfort on warm days.
• Custom size options and simple installation make it flexible for many outdoor layouts.

Cons

• Not waterproof, so it will not keep rain out beneath the sail.
• Some customers report size or shape variation, so careful measurement and allowance for manual tolerances are required.

Specifications

Product Type	Rectangle shade sail canopy
Size	11 ft x 20 ft
Material	Woven HDPE (High Density Polyethylene)
UV Block	Up to 95% UV blockage (UPF50 implied)
Hardware	Stainless steel D rings with heavy duty white webbing
Water Resistance	Water permeable / breathable (not waterproof)
Shape	Rectangle

Our Verdict

The ShadeMart 11 ft x 20 ft White Sun Shade Sail is a sensible, value-minded choice for anyone who wants reliable UV protection with superior airflow and durable attachment points. It performs well for patios, carports and yards where lowering heat and avoiding water pooling are priorities, though buyers who need total rain protection should look elsewhere. Overall it offers strong functionality, customization options, and long-term durability for exterior shade needs.

Frequently Asked Questions

Is this shade sail waterproof?
The fabric is water permeable and breathable, so it is not waterproof and will allow rain to pass through.

Can it be attached to trees, poles or walls?
Yes, with the proper hardware kits the stainless steel D rings and webbing allow attachment to poles, trees, walls and roofs.

Does it block UV effectively?
Yes, the woven HDPE fabric blocks up to 95% of harmful UV rays, helping reduce temperature under the sail.