ShadeMart 11ft x 18ft Green Rectangle Sun Shade Sail - UPF50 Canopy

In this review of the ShadeMart 11ft x 18ft Green Sun Shade Sail, the bottom line is clear: this rectangle canopy is for homeowners and small businesses who want effective sun protection with durable, breathable fabric. The reviewer found the woven HDPE construction blocks up to 95% of harmful UV rays and noticeably cools outdoor spaces, making it a smart choice for patios, carports, and poolside areas where airflow and water permeability are important. Installation is straightforward with the supplied corner D rings and webbing, though buyers should measure carefully for a precise fit.

Key Features

• MATERIAL: Woven HDPE fabric provides a heavy duty feel and resists tearing while remaining lightweight for easier handling.
• UV PROTECTION: Blocks up to 95% of harmful UV rays and sunlight, helping to lower ambient temperatures by roughly 10 to 15 degrees in shaded areas.
• BREATHABILITY: Water permeable design lets rain and air pass through so the sail does not collect water and improves comfort on hot days.
• HARDWARE: Stainless steel corner D rings attached to white webbing give secure anchor points for standard shade sail hardware kits.
• CUSTOM SIZE OPTIONS: Multiple sizes available so buyers can order a closer fit for patios, pergolas, carports, or window shading projects.
• STYLING: Rectangle shape and color choices allow the sail to function as both a practical sun screen and a decorative element for outdoor spaces.

Who It's For

This ShadeMart rectangle sail is best for homeowners, renters, and small commercial users who need a breathable, UV-blocking canopy for patios, carports, pool areas, or pergolas. It suits installations where water permeability is desired so runoff does not pool and where sturdy corner hardware is required for secure attachment.

Those who should look elsewhere include buyers seeking a fully waterproof canopy or users who need a perfectly precise geometric shape without allowance for manual measurement variance. Also consider alternate products if you require pre-fitted mounting hardware included with the sail.

Pros & Cons

Pros

• High UPF protection and measurable cooling effect for outdoor living spaces.
• Durable woven HDPE fabric with stainless steel D rings and heavy duty webbing for secure anchoring.
• Breathable, water permeable design prevents water pooling and improves airflow under the canopy.
• Custom size options and multiple colors let the sail adapt to many installation scenarios.

Cons

• Not waterproof, so it will not provide full rain protection in heavy storms.
• Some customers report size and shape can vary slightly due to manual measurements, so careful measuring is required.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	11ft x 18ft
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 white webbing
Water Resistance	Water permeable, not waterproof

Our Verdict

The ShadeMart 11ft x 18ft Green Rectangle Sun Shade Sail is a practical, value-oriented canopy for anyone wanting solid sun protection, airflow, and durable construction without seeking full waterproofing. It performs well for patios, carports, and poolside shade, and the stainless steel fittings plus custom size options make it a sensible buy for most outdoor shading projects.

Frequently Asked Questions

Is this sail waterproof?
This style is not waterproof; it is water permeable so rain and air pass through the fabric.

How much UV protection does it provide?
The fabric blocks up to 95% of harmful UV rays and carries a UPF50 level of sun protection.

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