ShadeMart 17 ft x 20 ft Blue Sun Shade Sail UPF50 Rectangle

In this review the ShadeMart 17' x 20' Blue Sun Shade Sail is judged as a practical, heavy duty canopy for homeowners who need broad, breathable UV protection over patios, decks or carports. The single biggest reason to buy is its combination of woven HDPE fabric and stainless steel corner D rings, which deliver durable shade and reliable anchoring without trapping heat; the review focuses on real outdoor use, longevity, and how well it reduces sun exposure while remaining water permeable.

Key Features

• Woven HDPE fabric: provides a high strength canopy that blocks up to 95% of harmful UV rays while remaining breathable so heat does not build underneath.
• Stainless steel D rings: heavy duty corner hardware attached to strong white webbing gives secure anchor points that resist rust and twisting over time.
• Water permeable construction: allows rain and airflow through the fabric, so runoff is reduced and the sail remains usable in light rain without acting like a rain tarp.
• Custom size options: the seller offers multiple sizes so buyers can get a close fit for patios, pergolas, carports or pool areas when they measure accurately.
• Rectangle styling: a simple geometric shape that integrates easily into existing outdoor layouts and can be combined with poles, walls or trees for varied mounting arrangements.

Who It's For

The ShadeMart rectangle shade sail is best for homeowners and renters seeking a cost effective way to cut sun and UV exposure across a large area such as a deck, patio or carport where reduced temperature and breathable shade are priorities. It suits people who want durable hardware and a fabric that will not trap water, and who can attach the sail to permanent structures or suitable poles.

Those who should look elsewhere include shoppers needing a fully waterproof canopy or a rigid structure; because this style is not waterproof it will not replace a sealed canopy or solid roof for heavy rain protection.

Pros & Cons

Pros

• Blocks up to 95% of UV, noticeably lowering temperatures under the sail.
• Durable woven HDPE fabric paired with stainless steel D rings for dependable long term use.
• Breathable and water permeable design reduces pooling and allows airflow.
• Available in custom sizes so it can be matched to nonstandard areas.

Cons

• Not waterproof, so it does not provide full rain protection.
• Aesthetic appeal is mixed among customers, so color and look may not suit every outdoor scheme.

Specifications

Our Verdict

The ShadeMart 17' x 20' rectangle shade sail is a sensible buy for anyone needing wide, breathable UV protection with durable hardware and flexible mounting options. It represents good value when you want reduced temperature and long term durability, provided you accept that it is not a waterproof roof replacement.

Frequently Asked Questions

Is this sail waterproof?
No. The fabric is water permeable and designed to let water pass through rather than collect, so it is not suitable as a waterproof canopy.

Can it be attached to trees or poles?
Yes. With the proper hardware kits it can be attached to poles, trees, walls or roofs as needed.

Does it really block UV?
Yes. The woven HDPE fabric is rated to block up to 95% of harmful UV rays and lowers temperatures under the sail.