11 ft x 20 ft Blue Triangle Waterproof Shade Sail - UPF50

In this review of the 11' x 20' x 22.8' blue triangle shade sail, the bottom line is simple: it is an economical, heavy-duty option for anyone needing fast, reliable sun and rain protection for a patio, carport, or yard. The reviewer found the sail's standout feature to be its combination of a PU waterproof coating and up to 98% UV blockage, which together deliver cooler, drier shade that can lower temperature by up to 15 degrees beneath the canopy. Installation is straightforward and the reinforced edges feel built to last.

Key Features

• Waterproof material: Polyester with a PU waterproof coating prevents water and wind from passing through, so the covered area stays drier in light to moderate rain.
• High UV protection: The fabric blocks up to 98% of harmful UV, offering strong sun protection for outdoor living and reducing sun exposure risks.
• Temperature reduction: Under the shade the sail can lower ambient temperature by as much as 15 degrees, making patios and seating areas noticeably cooler.
• Reinforced corners and edges: Curved edges with dual-layer white webbing and stainless steel D-rings provide secure anchor points and improved durability at attachment points.
• Quick setup: The sail is designed to be taken down or set up in about 5 minutes for basic installations, which is useful for seasonal or temporary use.
• Limited warranty: A 3 year limited warranty offers buyers some protection against manufacturing defects.

Who It's For

This shade sail is best for homeowners with a patio, backyard seating area, or compact carport who want a simple, affordable way to add both sun and rain protection. It suits DIY installers who value quick assembly and reinforced attachment points that perform well in windy conditions.

It is less suitable for permanent, structural canopies where engineered mounting and heavy seasonal snow loads are a concern; customers seeking a fixed, architectural solution or those needing custom engineering for extreme climates should consider a different, purpose-built option.

Pros & Cons

Pros

• Excellent sun protection with up to 98% UV blockage, keeping shaded areas cooler and safer.
• Waterproof PU-coated polyester resists water and wind, offering weather versatility beyond a typical shade cloth.
• Sturdy corner finishes and stainless steel D-rings increase longevity and make tie-in points reliable.
• Fast setup and good value for money compared with permanent canopies.

Cons

• As a fabric sail, it is not a permanent structural solution and may require removal in severe weather or heavy snow.

Specifications

Shape	Triangle
Size	11' x 20' x 22.8'
Material	Polyester with PU waterproof coating
UV Blockage	Up to 98%
Temperature Reduction	Up to 15 degrees under shade
Edge & Corner Finish	Dual-layer white webbing and stainless steel D-rings
Warranty	3 year limited warranty

Our Verdict

The 11' x 20' x 22.8' blue triangle shade sail is a practical, cost-effective choice for homeowners who want strong sun protection and water resistance without a permanent installation. With reinforced corners, a waterproof PU coating and high UV blockage, it delivers reliable shade and cooler outdoor spaces, making it a good value for most patios, gardens, and temporary carports.

Frequently Asked Questions

Is this sail waterproof?
Yes. The fabric is polyester with a PU waterproof coating designed to keep light to moderate rain from passing through.

How much UV protection does it provide?
The sail blocks up to 98% of harmful UV, offering strong sun protection under the canopy.

How durable are the corners?
Corners are reinforced with dual-layer webbing and stainless steel D-rings to provide secure attachment points and improved durability.