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

In this review the ShadeMart 11 ft x 20 ft Blue Sun Shade Sail is evaluated as a practical, heavy duty fabric canopy for patios, carports and yards. The bottom line: this rectangular UPF50 shade sail is best for homeowners or renters who need a breathable, heat-reducing cover that tolerates wind and rain drainage rather than a waterproof canopy. The review finds the woven HDPE fabric, stainless steel corner D rings and reinforced webbing combine to deliver durable, long-lasting shade that cuts sunlight and noticeably lowers ambient temperature.

Key Features

• Material: Woven HDPE fabric offers a sturdy, fade-resistant surface that stands up to sun exposure and provides long-term wear.
• UV protection: Blocks up to 95% of harmful UV rays, delivering UPF50-level sun protection and cooler outdoor spaces.
• Breathability: Water permeable and breathable design allows rain to pass through and reduces wind stress on attachment points.
• Hardware readiness: Stainless steel D rings and heavy duty white webbing at corners make it simple to attach with the proper hardware kits.
• Custom sizing: Multiple custom sizes are available so buyers can order dimensions to match patios, carports, pergolas or pool areas.
• Styling: The rectangle shape and color options let the sail act as both functional shade and a decorative element in outdoor design.

Who It's For

This shade sail is ideal for homeowners, renters and small businesses who want a cost-effective way to reduce sun exposure over patios, carports, pergolas and poolside seating. It is especially useful where water drainage through the fabric is preferred to pooling, and where lowering perceived temperature by about 10 to 15 degrees matters.

It is not the right choice for buyers who need a fully waterproof canopy or precise machine-cut symmetry for architectural installations; customers should measure carefully and expect small variations from manual measuring when ordering a custom size.

Pros & Cons

Pros

• Durable woven HDPE material and stainless steel D rings give a solid, long-lasting installation.
• Provides strong sun protection (UPF50) and reduces heat in shaded areas.
• Breathable, water permeable fabric prevents water pooling and reduces wind uplift.
• Custom size options and multiple colors make it adaptable to many outdoor settings.

Cons

• Not waterproof, so it will not keep an area dry during heavy rain.
• Size and shape can show minor variation from manual measurement; some buyers reported fit or shape differences.

Specifications

Our Verdict

The ShadeMart 11 ft x 20 ft rectangle shade sail is a strong value for anyone who needs durable, breathable sun protection for patios, carports and yards. Its UPF50 performance, reinforced corners and custom size options make it versatile for many outdoor projects, but buyers who require a waterproof cover or perfectly precise rectangle cuts should consider other options.

Frequently Asked Questions

Is this shade sail waterproof?
No. The fabric is water permeable and designed to allow water to pass through rather than provide a waterproof cover.

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

Will it reduce temperature under the canopy?
Yes. The woven HDPE fabric and UPF50 protection reduce direct sunlight and typically lowers perceived temperature by around 10 to 15 degrees in shaded areas.