ShadeMart 19ft x 20ft Red Rectangle Sun Shade Sail - UPF50 Protection

In this review of the ShadeMart 19' x 20' Red Rectangle Sun Shade Sail, the bottom line is simple: this is a practical, heavy duty sun screen for homeowners who need large-area UV protection without trapping heat. The reviewer found it best for patios, carports, pergolas and covering boats, where breathability and durability matter most. The sail blocks up to 95% of UV, lowers temperatures noticeably, and uses stainless steel corner D rings and heavy webbing for secure anchoring, making it a straightforward, long-lasting solution for outdoor shade.

Key Features

• Woven HDPE fabric: provides strong, tear-resistant coverage while remaining breathable so air and water pass through.
• UPF50 sun protection: blocks up to 95% of harmful UV rays to reduce sun exposure and lower ambient temperature by around 10 to 15 degrees.
• Stainless steel D rings: heavy duty corner hardware attached to reinforced white webbing for reliable anchor points.
• Water permeable: the fabric sheds some rain by allowing water to pass through rather than pooling on the surface, reducing stress on attachment points.
• Custom size options: available in multiple sizes and custom measurements so you can match unusual spaces when measured accurately.
• Stylish rectangle shape: a simple geometric look that integrates with patios, yards, and carports as both functional and decorative shade.

Who It's For

The ShadeMart 19' x 20' sail is aimed at homeowners and small businesses who need a large, breathable sun shade for outdoor living spaces, carports, poolside areas, or to cover boats. It suits anyone who values airflow and UV protection over full waterproofing, and who can anchor the sail to posts, trees, walls, or roof structures.

Those who should look elsewhere include buyers wanting a fully waterproof canopy or an inflatable/rigid structure; this sail is explicitly water permeable and designed to let water and air pass through rather than keep all moisture out.

Pros & Cons

Pros

• Durable woven HDPE fabric that holds up well in wind and resists tearing.
• High UV block rate and measurable cooling effect, making outdoor areas more comfortable.
• Stainless steel D rings and reinforced webbing give secure attachment points for long-term use.
• Easy to install with the proper hardware and adaptable to many mounting options.

Cons

• Not waterproof, so it will not keep an area fully dry during heavy rain.
• Custom sizing requires careful measurement since manual variations can occur.

Specifications

Product type	Rectangle shade sail
Size	19 ft x 20 ft
Material	Woven HDPE (High Density Polyethylene)
UV protection	UPF50, blocks up to 95% of UV rays
Hardware	Stainless steel corner D rings with heavy duty white webbing
Water performance	Water permeable and breathable (not waterproof)
Shape	Rectangle

Our Verdict

The ShadeMart 19' x 20' sail is a solid value for anyone needing a large, UV-resistant, breathable shade that installs on posts, trees, or walls. It performs well in sun and wind, uses sturdy hardware, and significantly increases outdoor comfort, but buyers should not expect waterproof coverage. For breathable sun protection and long-term durability it is a practical, cost-effective choice.

Frequently Asked Questions

Is this shade sail waterproof?
Answer. No, the fabric is water permeable and breathable; it allows water and air to pass through rather than keeping the area fully dry.

What kind of mounting points does it use?
Answer. The sail has stainless steel corner D rings attached to heavy duty white webbing; with the right hardware the sail can be anchored to poles, trees, walls, or roofs.

Will it reduce temperature under the sail?
Answer. Yes, the sail blocks up to 95% of UV and typically lowers ambient temperature by around 10 to 15 degrees according to product specifications.