ColourTree 21ft x 21ft x 21ft Grey Triangle Sun Shade Sail - Heavy

In this review the ColourTree 21' x 21' x 21' grey triangle sun shade sail is evaluated for homeowners and light commercial users who need durable, high-coverage UV protection. The bottom line: this shade sail's standout feature is its 190 GSM 100% virgin HDPE fabric treated with a UV stabilized compound, which delivers long-lasting performance and meaningful temperature reduction. For anyone wanting a triangular canopy that breathes, sheds water and resists fading, this review explains what works, what to expect during installation and why it is a practical choice for patios and pools.

Key Features

• 190 GSM Virgin HDPE: Thick, non-recycled fabric provides a tougher weave that withstands prolonged sun exposure better than typical recycled alternatives.
• UV Stabilized Compound: Laboratory-tested for extended UV resistance so the material resists drying, tearing and fading in intense sun.
• 95% UV Blockage: The woven fabric blocks the majority of harmful UV rays and noticeably reduces ambient temperature under the sail.
• Breathable, Water-Permeable Weave: Air and rain pass through the fabric to prevent pooling and reduce wind load compared with solid canopies.
• Reinforced Seams and Stainless D-Rings: Heavy double-layered stitching and sturdy D-rings at corners improve longevity and make attachment secure.
• Three Year Warranty: A limited 3 year warranty gives added confidence under normal weather and usage.

Who It's For

The ColourTree triangle sail is aimed at homeowners with patios, pools, balconies or carports who want reliable sun protection that looks clean and performs year after year. It also suits small commercial spaces where a breathable, high-UV-blocking canopy is preferred over rigid structures.

It is not a full replacement for permanent roofing or a solution for severe weather shelters; those needing a watertight, engineered roof system or winter storm resistance should consider a different product. Also, buyers should plan to purchase proper shade sail hardware kits and cables separately for best results.

Pros & Cons

Pros

• Durable 190 GSM virgin HDPE resists fading and tearing under strong sun.
• High UV blockage reduces temperature and protects shaded areas effectively.
• Breathable design prevents water pooling and eases wind load.
• Solid construction with reinforced seams and stainless D-rings simplifies long-term use.

Cons

• Installation requires separate hardware kits and proper cables; nylon ropes are not recommended and will reduce longevity.
• Not designed to be fully waterproof in heavy storms, since the fabric is breathable to allow water through.

Specifications

Shape	Right triangle
Size	21' x 21' x 21'
Material	190 GSM 100% virgin HDPE
UV Protection	Blocks 95% of UV
Hardware	Stainless steel D-rings at corners (hardware sold separately)
Breathability	Woven fabric allows air and water to pass
Warranty	3 years limited

Our Verdict

The ColourTree 21' triangle sun shade sail is a solid value for those who need robust, long-lasting UV protection without a permanent structure. Its 190 GSM virgin HDPE and UV stabilizer deliver durability and consistent shading performance, while the breathable weave prevents pooling and reduces heat. Buyers who provide proper installation hardware and understand it is not a waterproof roof will find this an effective and attractive canopy for patios, pools and carports.

Frequently Asked Questions

Is installation hardware included?
Hardware kits and cables are sold separately; use recommended cables rather than nylon rope for secure, durable installation.

Will the sail prevent rain from passing through?
The woven fabric is breathable so water will pass through rather than pool; it is not a watertight roofing membrane.

How long will the material last in strong sun?
The 190 GSM virgin HDPE has been UV tested and is treated with a UV stabilized compound; the product carries a 3 year limited warranty under normal use.