ColourTree 20ft x 21ft Green Sun Shade Sail Canopy - Heavy Duty UV

Our review of the 20ft x 21ft ColourTree green sun shade sail finds it best for homeowners and small commercial spaces that need a durable, high-coverage canopy to reduce heat and UV exposure. The single biggest reason to buy is the heavy 190 GSM virgin HDPE fabric treated with UV stabilized compound, which the reviewer found gave noticeably stronger sun resistance and a cooler shaded area compared with thinner sails. Installation requires separate hardware, but once tensioned the sail provides substantial 95% UV blockage and steady breathability.

Key Features

• 190 GSM virgin HDPE: Thick, non-recycled fabric resists tearing and fading and is engineered for long-term outdoor exposure.
• UV stabilized compound: Laboratory UV testing supports extended lifespan by preventing drying out and brittleness under sun exposure.
• 95% UV blockage: The woven fabric blocks most harmful UV and noticeably reduces sunlight and temperature beneath the canopy.
• Breathable design: Air and water can pass through the weave so rain does not pool and the shaded area remains ventilated.
• Reinforced edges and D-rings: Double layered stitched seams and stainless steel D-rings provide secure attachment points when used with proper hardware.
• 3 year limited warranty: Manufacturer warranty offers added confidence under normal weather and usage conditions.

Who It's For

This shade sail suits homeowners with patios, pools, balconies or carports who want a large rectangular canopy that emphasizes sun protection and breathability. It is also a reasonable choice for small commercial outdoor seating areas where a heavy duty fabric and long-term UV resistance are priorities.

It is not ideal for buyers who want a fully waterproof shelter, those who prefer included mounting hardware, or customers who need a temporary ultra-light canopy for occasional use. Proper shade sail hardware and correct installation are essential to get the claimed durability.

Pros & Cons

Pros

• High quality 190 GSM virgin HDPE delivers strong sun protection and feels substantial compared with economy sails.
• Blocks 95% of UV while remaining breathable, so shaded areas stay cooler without water pooling in rain.
• Reinforced seams and stainless steel D-rings help secure the sail when paired with recommended cables and hardware.

Cons

• Installation hardware is sold separately and improper ropes can fail, so extra expense and care are required for a secure setup.
• Some users report mixed durability in extreme wind conditions, so very exposed sites may require additional bracing or frequent inspection.

Specifications

Size	20 ft x 21 ft (rectangle)
Material	190 GSM 100% virgin HDPE
UV Protection	95% UV blockage
Edges and fittings	Double layered reinforced seams with stainless steel D-rings
Breathability	Woven fabric allows air and water to pass through
Warranty	3 year limited warranty

Our Verdict

The ColourTree 20ft x 21ft green shade sail is a solid value for anyone needing reliable sun protection and ventilation from a heavy duty fabric. When installed with proper hardware it delivers effective 95% UV blockage and a durable feel thanks to the 190 GSM virgin HDPE, making it a practical choice for patios, pools and carports where long-term sun resistance matters.

Frequently Asked Questions

Is the fabric waterproof?
The woven HDPE fabric is breathable and allows water to pass through, so it is not fully waterproof and will not create a watertight shelter.

Does the sail include mounting hardware?
No, installation hardware kits and cable ropes are sold separately; use recommended stainless cables and hardware rather than nylon ropes.

How long will the sail last?
The sail uses UV stabilized virgin HDPE tested for extended UV exposure and carries a 3 year limited warranty under normal conditions.