15 ft x 15 ft x 21.2 ft Right Triangle Sun Shade Sail - 95% UV Block

In this review of the 15 ft x 15 ft x 21.2 ft right triangle shade sail, the bottom line is simple: this is a good choice for homeowners and small commercial spaces that need durable, high-coverage sun protection without blocking airflow. The sail is made from heavy 200 GSM HDPE cloth that delivers up to 95% UV blockage and a measurable drop in temperature under the canopy, so it is worth considering when shade, durability and a tailored fit matter.

Key Features

• 95% UV Protection: The 200 GSM HDPE fabric reliably blocks up to 95% of harmful UV rays for safer outdoor time.
• Temperature Reduction: The shade sail lowers ambient temperatures by as much as 15 degrees in shaded areas for noticeably cooler comfort.
• Commercial-Grade Materials: Reinforced edges, double-layer stitching and stainless steel D-rings improve longevity under sun and wind exposure.
• Custom Fit: The sail is built to order using D-ring to D-ring measurements so it can match irregular spaces or preferred clearances.
• Breathable and Permeable: The fabric is water and air permeable, preventing ponding while still offering solid sun protection.
• Easy Installation: It installs to trees, poles, walls or roofs and requires leaving at least 0.5 ft of clearance at corners for best performance.

Who It's For

The shade sail suits homeowners, cafes, playgrounds and patios that need a sturdy, permanent-looking canopy that reduces sun exposure and temperature. Buyers who prioritize durability and UV protection will appreciate the heavy 200 GSM fabric and reinforced construction.

Those who need a quick pop-up solution or pinpoint waterproof coverage should look elsewhere; the sail is designed as a fitted, semi-permanent canopy rather than a temporary umbrella or fully waterproof awning.

Pros & Cons

Pros

• High sun blockage and measurable cooling under the canopy for better comfort.
• Robust build with stainless steel D-rings and double stitching for long life.
• Custom sizing option lets you get a tailored fit for unusual spaces.

Cons

• Some buyers report the delivered size can feel smaller than expected, so precise measurements are essential.

Specifications

Shape	Right triangle
Size	15 ft x 15 ft x 21.2 ft
Material weight	200 GSM HDPE
UV blockage	Up to 95%
Permeability	Water and air permeable
Hardware	Stainless steel D-rings, reinforced edges
Warranty/assurance	3 years included

Our Verdict

The 15 ft x 15 ft x 21.2 ft right triangle shade sail is a practical, long-lasting option for anyone needing strong sun protection and cooler outdoor areas. With heavy 200 GSM fabric, solid hardware and a custom sizing approach, it represents good value for patios, small commercial spaces and yards where a fitted, breathable canopy is preferred.

Frequently Asked Questions

Is this sail waterproof?
The fabric is water permeable, so it will not pond but is not a fully waterproof tarp.

How much sun does it block?
It blocks up to 95% of UV rays thanks to the 200 GSM HDPE material.

Do I need special hardware to install?
Standard mounting kits and sturdy anchor points like poles, walls or trees are recommended; ensure corner clearances of about 0.5 ft for best tension.