ColourTree 18ft x 18ft x 18ft Grey Triangle Sun Shade Sail - Heavy

In this review we look at the ColourTree 18' x 18' x 18' grey triangle sun shade sail to see who it suits and why it stands out. The bottom line: this shade sail is best for homeowners and small businesses who need a durable, high-coverage canopy that blocks most UV while remaining breathable. The single biggest reason to buy is its 190 GSM 100% virgin HDPE fabric treated with a UV stabilized compound, which the manufacturer says is far more resistant to sun damage than recycled material.

Key Features

• 190 GSM virgin HDPE: The thick, non-recycled fabric offers increased tear resistance and a sturdier feel compared with thinner or recycled sails.
• UV stabilized compound: Laboratory-tested to resist degradation so the fabric resists drying out, tearing and fading under prolonged sun exposure.
• 95% UV blockage: The woven mesh blocks a high percentage of harmful UV and reduces temperature beneath the sail for more comfortable shaded areas.
• Breathable woven fabric: Air and water pass through the mesh to prevent pooling and allow cooling airflow even in rain or heat.
• Reinforced edges and D-rings: Double layered stitched seams and stainless steel D-rings improve attachment strength and reduce fraying at the corners.
• Three year limited warranty: Coverage for normal weather and use gives extra confidence in the product's expected lifespan.

Who It's For

This shade sail is ideal for people installing a permanent or semi-permanent shade over patios, pools, balconies or carports who want high UV protection and a commercial-grade fabric weight. It suits DIY installers who have or plan to buy quality shade hardware and cable kits to achieve a neat, secure installation.

It is less appropriate for those who need a fully waterproof canopy or a tension structure kit included with purchase; hardware is sold separately, and users should avoid nylon rope and use recommended cables and fittings for best durability.

Pros & Cons

Pros

• Exceptional material: 190 GSM virgin HDPE provides strength and longer life in sun-exposed settings.
• High UV protection: Blocks 95% of harmful UV, helping reduce heat and sun exposure beneath the sail.
• Low maintenance: Breathable, water-permeable fabric prevents pooling and resists fading and tearing.
• Durable fittings: Reinforced seams and stainless steel D-rings make attachment reliable when paired with proper hardware.

Cons

• Hardware not included: Buyers must purchase suitable cables and fittings separately to install the sail securely.
• Not fully waterproof: The breathable mesh allows water through, so it will not provide full rain protection.

Specifications

Shape	Triangle
Size	18' x 18' x 18'
Material weight	190 GSM
Fabric	100% virgin HDPE mesh
UV protection	95% UV blockage
Hardware	Stainless steel D-rings; cables and kits sold separately
Warranty	3 years limited

Our Verdict

The ColourTree 18' triangle shade sail is a practical choice for anyone wanting a heavy-duty, UV-blocking canopy that lasts under strong sun. It offers solid value when paired with proper installation hardware, delivering durable coverage, reduced heat under the sail and minimal maintenance over time.

Frequently Asked Questions

Does the sail block most UV?
Yes, the fabric is designed to block about 95% of harmful UV while remaining breathable.

Is hardware included?
No, installation hardware and cables are sold separately; high-quality cable kits are recommended rather than nylon rope.

How long will the sail last?
The sail uses UV stabilized virgin HDPE and comes with a 3 year limited warranty for normal weather and use, and is tested for extended UV exposure.