Cool Area Sun Shade Sail Right Triangle 13x16x20.6 ft - Strong UV

In this review of the Cool Area Sun Shade Sail 13x16x20.6 ft right triangle, the bottom line is clear: this shade sail is best for homeowners and renters who need a simple, durable way to cut direct sun over a patio, pool or deck. The single biggest reason to buy is the fabric construction: a whole-piece, high density HDPE panel that delivers 85%-90% shading and up to 95% UV protection while resisting fraying thanks to reinforced stitched seams. Installers should allow 0.5-1 ft per corner for hardware and expect a fabric tolerance of about 4 in due to material elasticity.

Key Features

• Whole-piece fabric: Made without splicing seams for a cleaner look and more consistent shading across the entire triangle.
• High UV protection: High density 100% new HDPE fabric blocks up to 95% of UV rays to keep outdoor spaces cooler and protect furniture.
• Strong attachment points: Rust-proof stainless steel D-rings at each corner make it straightforward to anchor the sail to posts, fences or house fixtures.
• Reinforced edges: All edges feature stitched seams to prevent fraying and help the sail retain its shape over time.
• Installation guidance: The manufacturer recommends leaving 0.5-1 ft clearance for accessories and notes a 4 in tolerance from material elasticity to ensure a proper fit.
• Versatile use: Designed for patios, pergolas, decks, pools, carports and balconies for broad outdoor coverage.

Who It's For

This shade sail suits homeowners, renters and DIYers who want a low-profile way to expand shaded outdoor living without building a permanent structure. It works well where you can anchor three points at varying heights to create tension and a neat look.

People who need a precision-cut, load-bearing canopy for heavy snow or permanent shelter should look elsewhere; the sail is built for sun and light weather protection, not structural roofing. Also, buyers who require exact fit without tolerance should account for the 4 in elasticity variation before ordering.

Pros & Cons

Pros

• Durable HDPE fabric provides strong shade and high UV resistance for cooler outdoor spaces.
• No splicing seams offers a tidy appearance and improved shading performance.
• Reinforced stitched seams and stainless steel D-rings simplify installation and resist wear.
• Good color longevity reported by customers in direct sunlight.

Cons

• Material elasticity causes a tolerance of about 4 in, so exact-fit installations can be tricky.
• Some customers report mixed longevity in very high winds; heavy weather may shorten service life.

Specifications

Shape	Right triangle
Size	13 x 16 x 20.6 ft
Material	High density 100% new HDPE fabric
Shading rate	85%-90%
UV protection	Up to 95% UV protection
Corner hardware	Rust-proof stainless steel D-rings
Edge construction	Reinforced stitched seams

Our Verdict

The Cool Area 13x16x20.6 ft right triangle shade sail is a practical, value-oriented solution for shading patios, pools and decks. Its whole-piece HDPE fabric, reinforced edges and stainless D-rings deliver reliable performance for sun protection and everyday outdoor use, though installers should plan for a 0.5-1 ft accessory allowance and a 4 in tolerance from material elasticity.

Frequently Asked Questions

How much extra space is needed for installation?
Allow 0.5-1 ft per corner for accessories and mounting hardware to ensure proper tension and fit.

Will the sail block UV rays effectively?
Yes, the high density HDPE fabric provides up to 95% UV protection and an 85%-90% shading rate.

Is the fabric durable in wind?
The reinforced seams and stainless D-rings add durability and many users report good wind performance, but very high winds may reduce lifespan.