13 ft x 17 ft x 21.4 ft Red Right Triangle Sun Shade Sail - Durable UV

In this review the 13 ft x 17 ft x 21.4 ft Red Right Triangle Sun Shade Sail is judged as a practical, heavy-duty exterior canopy for homeowners and small commercial spaces that need reliable sun protection. The single biggest reason to buy is its engineered shape and material: measurement from corner to corner with slightly curved edges prevents mid-span sagging and keeps the sail taut for long-lasting appearance and performance. The review focuses on real use around pools, patios and carports where cooling, UV blockage and durability matter.

Key Features

• Precision cut edges: The slightly curved edges are based on a calculated radian to prevent sagging and maintain a neat, tensioned look after installation.
• Strong polyethylene fabric: Made from virgin polyethylene, the canopy balances light weight and high tensile strength for durable outdoor use.
• High UV protection: The fabric provides up to 95% UV blockage to help reduce sun exposure for people and furnishings beneath the sail.
• Visibility and ventilation: With about 90% visibility blockage the sail still allows air flow, offering shading and cooling without trapping heat.
• All-season resilience: It helps cool in summer, offers anti-frost benefit at night and is slightly rainproof during light showers.
• Customizable and warranted: The product can be customized to fit unusual sites and comes with a 3-Year Limited Warranty for added confidence.

Who It's For

This shade sail is well suited to homeowners with a pool, patio, driveway or garden who want a large, shaped canopy that resists sagging and blocks most sunlight. It is also useful for small commercial outdoor seating or carport coverage where durable fabric and ease of installation matter.

Those who should look elsewhere include buyers needing a fully waterproof awning for heavy rain, or anyone requiring a lightweight decorative drape rather than a tensioned, structural shade solution. If you need integrated hardware or a specific mounting kit tailored to a complex site, check compatibility since hardware reviews are mixed.

Pros & Cons

Pros

• High UV blockage reduces sun exposure and helps keep outdoor spaces cooler.
• Engineered curved edges minimize mid-span sag for a consistently taut appearance.
• Durable virgin polyethylene construction offers good tensile strength and longevity.
• Custom order option and a 3-Year Limited Warranty add flexibility and peace of mind.

Cons

• Not fully waterproof in heavy rain, described only as slightly rainproof in light showers.
• Hardware included receives mixed feedback, so buyers may want to source heavier-duty fittings for permanent installations.

Specifications

Shape	Right triangle
Size (corner to corner)	13 ft x 17 ft x 21.4 ft
Color	Red
Material	Virgin polyethylene
UV blockage	Up to 95%
Visibility blockage	About 90%
Warranty	3-Year Limited Warranty

Our Verdict

The red right triangle shade sail is a practical, value-oriented choice for anyone who needs strong sun protection and a tidy, tensioned canopy over a pool, patio or carport. Its engineered curved edges and durable polyethylene fabric deliver reliable shading and longevity, making it a good buy for homeowners who prioritize UV blockage and cooling over full waterproofing.

Frequently Asked Questions

Does the sail prevent sagging?
The edges are cut with a calculated radian and measured corner to corner to reduce mid-span sag and maintain tension when properly installed.

How much sun protection does it provide?
The fabric blocks up to 95% of UV rays and about 90% of visibility, offering substantial sun protection and cooling.

Is this fully waterproof?
No, it is slightly rainproof for light showers but not intended as a full waterproof awning in heavy or prolonged rain.