ShadeMart 9 ft x 20 ft Green Sun Shade Sail UPF50 Rectangle

In this review of the ShadeMart 9' x 20' green rectangle shade sail, the bottom line is straightforward: it is a heavy-duty, breathable canopy best suited for homeowners who want solid UV protection and airflow without trapping water. The reviewer found the woven HDPE fabric and stainless steel corner D rings deliver durable, weather-ready performance, while the water-permeable design keeps pooled water from forming during storms. If you need a decorative, cooling shade for a patio, carport, or pool area, this sail offers reliable sun blockage and long-term use.

Key Features

• Woven HDPE fabric: the high density polyethylene cloth provides a sturdy, tear-resistant surface that blocks up to 95% of harmful UV rays.
• Stainless steel D rings: corrosion-resistant corner hardware attached to heavy duty white webbing improves load points and long-term durability.
• Water permeable design: the breathable weave allows rain and air to pass through so water does not pool and pressure on attachments is reduced.
• Temperature reduction: by blocking sunlight the sail can lower perceived temperatures in a shaded area by roughly 10 to 15 degrees, making outdoor spaces more comfortable.
• Custom sizing available: a range of custom sizes lets buyers match the sail to a specific patio, pergola, or carport footprint when measured accurately.
• Decorative rectangle shape: a simple rectangular profile integrates with many outdoor styles while adding functional shade.

Who It's For

The ShadeMart rectangle sail is ideal for homeowners and renters seeking an economical way to add UPF50 sun protection and airflow to patios, yards, pools, pergolas, and carports. Installers who want a non-waterproof, breathable canopy that reduces heat and resists UV degradation will appreciate the woven HDPE construction and stainless steel hardware.

Those who need a fully waterproof solution, exact precision rectangle geometry without any size variance, or a permanent enclosed shelter should look elsewhere; this sail is a semi-permanent, fabric canopy that can vary slightly due to manual measurement and is intentionally water permeable.

Pros & Cons

Pros

• High UPF sun protection and a woven HDPE build that customers report as durable in harsh weather.
• Corrosion-resistant stainless steel D rings and heavy webbing improve attachment reliability.
• Breathable, water-permeable fabric prevents water pooling and improves airflow under the canopy.
• Custom size options and multiple colors make it adaptable to many outdoor projects.

Cons

• Not waterproof by design, so it will not keep rain out of an area beneath it.
• Some buyers report mixed experiences with exact measured shape or size consistency due to manual measurement.

Specifications

Brand	ShadeMart
Material	Woven HDPE (High Density Polyethylene)
Size	9' x 20'
Shape	Rectangle
UV Protection	Blocks up to 95% (UPF50)
Hardware	Stainless steel D rings with heavy duty white webbing
Water Resistance	Water permeable / not waterproof

Our Verdict

The ShadeMart 9' x 20' rectangle shade sail is a practical, value-oriented canopy for anyone wanting strong sun protection and airflow without the weight of a solid roof. It performs well as a patio, carport, or pool shade thanks to durable HDPE fabric and stainless steel fittings; just measure carefully and accept that it will let water pass through rather than keep an area dry.

Frequently Asked Questions

Is this shade sail waterproof?
The sail is water permeable and not waterproof; it allows rain to pass through to avoid pooling.

Can it reduce temperature under the sail?
Yes, the fabric blocks sunlight and users typically see a noticeable temperature drop, often around 10 to 15 degrees in shaded areas.

Will the hardware resist rust?
Corner D rings are stainless steel and attached to heavy webbing to provide good resistance to corrosion in outdoor use.