ShadeMart 17ft x 20ft Black Sun Shade Sail UPF50 Rectangle - Durable

In this review the ShadeMart 17' x 20' Black Sun Shade Sail is evaluated as a practical, heavyduty option for homeowners and small businesses who need broad UV protection without trapping heat. The sail's biggest selling point is its woven HDPE fabric that blocks up to 95% of harmful UV rays while remaining water and air permeable, so it keeps spaces cooler and avoids water pooling. For anyone wanting a rectangular canopy for a patio, carport or poolside area, this shade sail delivers durable coverage and flexible mounting options.

Key Features

• Woven HDPE Fabric: The high density polyethylene construction provides strong, tearresistant shade that reduces sun exposure and lowers surface temperatures.
• UPF50 Protection: Blocks up to 95% of UV rays, offering serious sun protection for people, furniture and vehicles beneath the sail.
• Water and Air Permeable: The breathable weave lets rain and wind pass through, preventing water pooling and reducing wind strain on the fabric.
• Stainless Steel Corner D Rings: Heavy duty stainless D rings attached to reinforced white webbing give secure anchor points for standard hardware kits.
• Custom Size Options: Multiple custom sizes are available to fit a variety of spaces, provided you measure the venue accurately before ordering.
• Versatile Mounting: Can be attached to poles, trees, walls or roofs, making it suitable for patios, carports, pergolas and pool areas.

Who It's For

The ShadeMart 17' x 20' rectangle sail is best for homeowners, renters with permission to install anchors, and small business owners who want a cost effective way to add shade over patios, carports or outdoor seating areas. Its breathable design and sturdy fittings make it a good option for locations that need consistent sun protection without capturing rainwater.

People seeking a fully waterproof canopy, those who cannot install anchor points, or shoppers who require a rigid frame structure should look elsewhere. Also measure carefully: customers report occasional size variation from manual measurements, so precise site dimensions matter before purchase.

Pros & Cons

Pros

• High quality woven HDPE fabric that feels durable and blocks most UV rays.
• Permeable design prevents water pooling and improves airflow under the canopy.
• Sturdy stainless steel D rings and reinforced webbing make installation secure with the right hardware.
• Custom sizing options allow better fit for nonstandard venues.

Cons

• Not waterproof, so it will not keep out heavy rain and is intended for shade rather than full weather protection.
• Manual size variations have been reported, so buyers must measure carefully and expect small discrepancies.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	17' x 20'
Material	Woven HDPE (High Density Polyethylene)
UV Protection	Blocks up to 95% (UPF50)
Corner Hardware	Stainless steel D rings on heavy duty webbing
Water Resistance	Water permeable (not waterproof)

Our Verdict

The ShadeMart 17' x 20' Black Sun Shade Sail is a solid, value oriented choice for anyone who needs a durable, breathable canopy that significantly reduces sun exposure and lowers temperature under the sail. It is especially good for patios, carports and poolside installations where airflow and UV protection matter more than full rain protection.

Frequently Asked Questions

Is this shade sail waterproof?
Answer. No, this style is water permeable and breathable, so it will not keep out heavy rain but will prevent pooling by letting water pass through.

Will it block UV rays effectively?
Answer. Yes, the woven HDPE fabric provides UPF50 protection and blocks up to 95% of harmful UV rays.

Can I install it on trees or poles?
Answer. Yes, with the proper hardware kits the sail can be attached to poles, trees, walls or roofs; ensure anchors and measurements are accurate.