ColourTree 18 ft x 20 ft Black Sun Shade Sail Canopy - Heavy Duty UV

In this review the ColourTree 18 ft x 20 ft black sun shade sail canopy is evaluated for homeowners and small business owners who need strong, UV-blocking outdoor coverage. The single biggest reason to consider this sail is its 190 GSM 100% virgin HDPE fabric treated with UV stabilized compound, which the manufacturer says was lab-tested for longterm sun exposure and is designed to resist fading and tearing while blocking up to 95% of harmful UV.

Key Features

• 190 GSM virgin HDPE: Thick, non-recycled fabric offers a sturdy feel and a claimed improvement in durability under prolonged sun exposure.
• UV stabilized compound: Material treated to resist drying out and fading so the canopy should maintain appearance and strength longer than untreated fabrics.
• 95% UV blockage: The woven fabric significantly reduces UV sunlight and lowers temperature in shaded areas, making patios and pools more comfortable.
• Breathable construction: Fabric allows air and water to pass through so rain does not pool on the canopy and ventilation is preserved beneath the sail.
• Reinforced edges and hardware: Double layered stitched seams and stainless steel D-rings at corners provide secure attachment points for proper installation.
• 3 year limited warranty: Coverage under normal weather and usage offers some reassurance for buyers concerned about longevity.

Who It's For

This shade sail is best for homeowners, patio owners and small commercial spaces needing a large rectangle cover that prioritizes sun protection and airflow, such as patios, poolside areas, carports and balconies. Buyers wanting a breathable shade that reduces heat and UV exposure will find it useful.

It is not aimed at people who need a fully waterproof awning or those who cannot install proper hardware; the sail requires separate shade sail hardware and strong attachment points, and customers should avoid nylon rope for longterm holds. Those needing an ultra-heavy duty windproof structure may look for purpose-built tensile structures instead.

Pros & Cons

Pros

• High density 190 GSM virgin HDPE fabric that feels robust and resists UV damage.
• Breathable weave that prevents water pooling and helps cool shaded areas.
• Reinforced seams and stainless steel D-rings for easier and more secure mounting.

Cons

• Durability reports are mixed; some users praise longevity while others have noted fraying under strain or severe weather.
• Installation hardware is sold separately and proper cables are required for best performance, adding to total cost.

Specifications

Size	18 ft x 20 ft (rectangle)
Material	190 GSM 100% virgin HDPE
UV Protection	Blocks up to 95% of UV
Construction	Double layered reinforced stitched seams with stainless steel D-rings
Breathability	Woven fabric allows air and water to pass through
Warranty	3 years limited warranty

Our Verdict

The ColourTree 18 ft x 20 ft black sun shade sail is a practical value choice for anyone needing large, breathable UV protection at a reasonable price; its 190 GSM virgin HDPE and reinforced corners make it a solid option for patios and pools. Buyers should plan on purchasing proper shade sail hardware and be aware that extreme conditions may test the material over time.

Frequently Asked Questions

Does this sail block sunlight effectively?
Yes, the woven fabric is rated to block up to 95% of harmful UV and will noticeably reduce direct sun and heat beneath the canopy.

Is the sail waterproof?
No, it is breathable and allows water to pass through so it will not pond water but it is not a waterproof cover.

Are fasteners included?
No, installation hardware kits are sold separately and high quality cables or hardware are recommended for secure mounting.