ShadeMart 8 ft x 20 ft Green Sun Shade Sail - UPF50 Rectangle Canopy

In this review the ShadeMart 8 ft x 20 ft Green Sun Shade Sail is examined for homeowners and small-business owners who need durable, breathable sun protection over patios, carports or pool areas. The single biggest reason to consider this rectangle sail is its combination of woven HDPE fabric and UPF protection that blocks up to 95% of harmful UV rays while allowing water and air to pass through, which lowers surface temperatures by roughly 10 to 15 degrees and keeps covered areas more comfortable.

Key Features

• Material: Woven HDPE fabric provides a strong, tear-resistant canopy that resists fading and holds shape under tension.
• UV Protection: Blocks up to 95% of harmful UV rays so shaded areas remain cooler and skin exposure is reduced.
• Breathable Design: Water permeable construction lets rain and airflow pass through, preventing puddles and reducing wind stress on the fabric.
• Hardware Ready: Stainless steel corner D rings attached to heavy-duty white webbing simplify anchoring to poles, walls, or trees.
• Custom Sizing: Available in custom sizes so you can match unusual spaces, provided you measure carefully before ordering.
• Styling: Rectangle shape and color options make the sail a decorative addition as well as practical shade.

Who It's For

The ShadeMart rectangle sun sail works well for homeowners, renters, and small business owners who need an affordable, heavy-duty shade solution for patios, carports, pergolas and poolside areas where airflow and water drainage matter. It is particularly useful where UV protection and heat reduction are priorities.

Those who should look elsewhere include buyers who need a fully waterproof canopy or who require a rigid, load-bearing roofing material; this sail is water permeable and not intended to create a dry overhead shelter during heavy, driving rain.

Pros & Cons

Pros

• Quality woven HDPE construction feels durable and holds up to sun exposure and storms.
• Effective UPF protection reduces heat and sun damage for people and furniture beneath.
• Breathable, water-permeable fabric prevents pooling and reduces wind pressure on anchor points.
• Stainless steel D rings and heavy webbing make installation straightforward with proper hardware.

Cons

• Not waterproof, so it will not keep an area fully dry in heavy rain.
• Size and exact shape can vary due to manual measurements, so careful measuring and expectations are required.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	8 ft x 20 ft
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
Function	Water permeable and breathable (not waterproof)

Our Verdict

The ShadeMart 8 ft x 20 ft rectangle shade sail is a practical, cost-effective choice for anyone wanting durable UV protection and improved outdoor comfort without a permanent structure. It delivers strong sun blockage, good durability and simple installation when paired with the right hardware, making it good value for patios, carports and poolside areas; avoid it only if you need a waterproof canopy.

Frequently Asked Questions

Is this sail waterproof?
No, the fabric is water permeable and breathable so it will not keep an area fully dry in heavy rain.

What kind of anchors are recommended?
Use robust hardware kits designed for shade sails and attach to poles, walls or trees; the sail has stainless steel D rings and heavy webbing for anchoring.

Will it reduce temperature under the sail?
Yes, customers report a noticeable temperature drop; the fabric blocks up to 95% of UV rays and can lower surface temperatures by about 10 to 15 degrees.