ShadeMart 17 ft x 18 ft Grey Sun Shade Sail UPF50 Rectangle

Our review of the ShadeMart 17 ft x 18 ft Grey Sun Shade Sail finds it is a practical choice for anyone wanting large, reliable shade without a solid roof. The biggest reason to buy is straightforward: the woven HDPE fabric blocks up to 95% of harmful UV rays while remaining water permeable, so it cuts heat and lets wind and rain pass without pooling. That balance of strong sun protection and breathability makes this shade sail especially useful for patios, carports, pergolas and poolside areas.

Key Features

• Material: Woven HDPE fabric provides durable, tear-resistant coverage that stays breathable and resists stretching over time.
• UV Protection: Blocks up to 95% of harmful UV rays, reducing surface and air temperatures beneath the canopy significantly.
• Hardware: Stainless steel corner D rings attached to heavy duty white webbing give secure anchor points for long-term installation.
• Water Permeable: The fabric allows water and air to pass through so rain does not pool and wind load is reduced.
• Custom Sizes: Available in a range of custom sizes so you can match the sail to irregular or large outdoor spaces when measured accurately.

Who It's For

This shade sail is best for homeowners and small business owners who need a large, breathable canopy for outdoor living spaces such as patios, carports, pool areas, pergolas and market tents. Installers who prefer fabric that sheds water and reduces wind uplift will appreciate the HDPE weave and stainless steel corners.

People who need a fully waterproof canopy or a rigid permanent roof should look elsewhere, since this style is intentionally water permeable rather than waterproof. Also, those who require exact factory-cut dimensions should allow for small manual measurement variance and consider a custom order.

Pros & Cons

Pros

• Strong woven HDPE fabric that feels durable and holds up in wind and light hail.
• Excellent sun protection, blocking most harmful UV and noticeably lowering temperatures below the sail.
• Stainless steel D rings and heavy webbing make attachment secure and installation straightforward.

Cons

• Not waterproof, so it will not keep out heavy rain as a solid roof would.
• Manual measurement variance means ordering custom sizes requires careful measuring.

Specifications

Our Verdict

The ShadeMart 17 ft x 18 ft Grey Sun Shade Sail is a solid value for anyone seeking a large, breathable shade that blocks UV and reduces heat without trapping rainwater. It is especially useful for patios, carports and pool areas where breathability and durable hardware matter; just plan measurements carefully if ordering a custom size.

Frequently Asked Questions

Is this sail waterproof?
No. The fabric is water permeable and breathable so it allows water to pass through rather than keeping out heavy rain.

What hardware is included?
Corners have stainless steel D rings attached to heavy duty white webbing for attaching to posts, walls or trees; compatible hardware kits are recommended for installation.

Will it reduce temperature under the sail?
Yes. The woven HDPE fabric blocks up to 95% of UV and typically lowers temperatures beneath the canopy by a noticeable amount.