17ft x 19ft Black Sun Shade Sail UPF50 Rectangle - Heavy Duty Patio

In this review of the 17' x 19' Black Sun Shade Sail UPF50 rectangle, the bottom line is simple: this is a practical, heavy duty shade solution for anyone who needs reliable sun protection without a solid roof. The sail is designed from woven HDPE fabric that blocks up to 95% of UV rays and noticeably reduces temperatures by about 10 to 15 degrees, so it is best for patios, carports, pergolas or RV covers where airflow and drainage matter more than full waterproofing. Installation is straightforward with the stainless steel D rings and reinforced webbing, and the overall build quality is the single biggest reason to choose it.

Key Features

• Woven HDPE fabric: provides strong, breathable shade that lets water and air pass through while blocking most UV radiation.
• Stainless steel D rings: rust resistant corner fittings make attachment easy and secure for long term outdoor use.
• Reinforced double webbing edges: sewn, double layered seams reduce fraying and increase durability under tension.
• High UV blockage: blocks up to 95% of harmful sunlight, lowering the shaded area temperature by 10 to 15 degrees.
• Custom size options: a selection of custom dimensions is available so buyers can match the sail to their specific venue measurements.
• Breathable, water permeable design: allows rainwater and wind to pass through, reducing sail stress during storms.

Who It's For

This shade sail is for homeowners and RV owners who want a durable, breathable cover that reduces sun exposure and heat without creating a sealed roof. It suits patios, carports, yards, pool areas and pergolas where airflow is desired and where anchors like poles, trees or walls are available for attachment.

Those who need a fully waterproof canopy or who cannot install anchor points should look elsewhere; this style is explicitly water permeable rather than waterproof. Buyers should also measure carefully if ordering a custom size, since manual measurements can cause slight variance in edge shape though the fabric area remains constant.

Pros & Cons

Pros

• Well built with reinforced seams and rust free stainless steel D rings for secure mounting.
• Blocks up to 95% of UV and noticeably cools shaded areas, improving comfort under the sail.
• Breathable, water permeable construction prevents pooling and reduces wind load in storms.

Cons

• Not waterproof, so it will not keep heavy rainers fully dry beneath the sail.
• Color appearance can vary slightly and customers report mixed impressions of shade color versus expectations.

Specifications

Our Verdict

The ShadeMart 17' x 19' rectangle sail is a solid value for anyone who needs long lasting sun protection and airflow rather than a waterproof cover. Its reinforced construction, stainless steel corners and effective UV blockage make it a dependable choice for patios, carports and RV protection, provided you measure accurately and accept that it is breathable, not watertight.

Frequently Asked Questions

Is this sail waterproof?
No. The fabric is water permeable and breathable, designed to allow water and air to pass through rather than form a waterproof barrier.

How much UV protection does it offer?
The woven HDPE fabric blocks up to 95% of harmful UV rays and is rated for significant sun protection and cooling.

Are the corner fittings rust resistant?
Yes. Corner D rings are made of stainless steel and are attached to heavy duty webbing to resist rust and simplify installation.