19ft x 20ft Red Sun Shade Sail UPF50 Rectangle - Breathable Patio

In this review of the 19' x 20' Red Sun Shade Sail UPF50 rectangle, the bottom line is simple: it is a practical, heavy-duty canopy for homeowners who need large-area sun protection without trapping heat. The reviewer found it best for patios, carports and poolside areas where airflow and UV blocking matter more than full waterproofing. Constructed from woven HDPE with stainless steel D-rings and heavy webbing, this shade sail balances durability and breathability, making it a straightforward choice for those who want effective sun reduction and a long-lasting fabric solution.

Key Features

• Woven HDPE fabric: provides a strong, tear-resistant canopy that blocks up to 95% of harmful UV rays while remaining breathable.
• Stainless steel D-rings: solid attachment points that resist corrosion and work with common hardware kits for secure mounting.
• Water permeable design: allows rain and air to pass through so the shade stays cooler and avoids pooled water during storms.
• Large rectangle shape: covers expansive areas such as decks or carports and can be customized to fit odd dimensions when ordered.
• Temperature reduction: the fabric noticeably lowers surface temperatures, making outdoor spaces more comfortable in direct sun.

Who It's For

The ShadeMart 19' x 20' shade sail is aimed at homeowners and renters who need a durable, breathable canopy for patios, pergolas, carports, pools and yards. It is especially useful where airflow is important and where blocking UV is a priority rather than creating a fully waterproof shelter.

People who need a fully waterproof cover, precise architectural tension systems, or a decorative awning with integrated fasteners may want to consider other waterproof canopies or a professionally installed shade structure. Also measure your mounting area carefully, since the product notes that custom sizing is available but manual measurement may vary.

Pros & Cons

Pros

• High UV protection and cooling effect, reducing direct sunlight and lowering temperatures under the sail.
• Durable woven HDPE construction that held up well for users during summer storms and heavy sun exposure.
• Corrosion-resistant stainless steel D-rings and heavy webbing make mounting straightforward and long-lasting.

Cons

• Not waterproof, so it will not keep out rain and is not a substitute for a sealed canopy.
• Manual measurements can vary, so buyers must measure carefully or order a custom size to fit precisely.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	19' x 20'
Material	Woven HDPE (High Density Polyethylene)
UV Protection	Blocks up to 95% of UV rays
Attachment	Stainless steel D-rings on heavy duty white webbing
Water Resistance	Water permeable, not waterproof

Our Verdict

This 19' x 20' ShadeMart rectangle shade sail is a solid value for anyone wanting large-area sun protection that stays cool and durable. It is best for outdoor living spaces where breathability and UV reduction matter more than waterproofing, and the stainless fittings and HDPE fabric make it a practical, long-lasting choice for typical patio and carport installations.

Frequently Asked Questions

Is this shade sail waterproof?
Answer. No, the fabric is water permeable and will allow rain to pass through rather than shed it.

Can I mount this to trees or poles?
Answer. Yes, with proper hardware kits the stainless D-rings and webbing make it compatible with poles, trees, walls or roofs.

Does it reduce temperature under the canopy?
Answer. Yes, the woven HDPE fabric significantly lowers temperatures by blocking sunlight and allowing airflow.