ColourTree CTAPR1220 18 ft x 21 ft Grey Sun Shade Sail Canopy - Heavy

In this review the ColourTree 18 ft x 21 ft grey sun shade sail is assessed for homeowners and small commercial spaces who need strong, breathable sun protection. The bottom line: it is a heavy duty, UV-resistant shade made from 190 GSM 100% virgin HDPE that blocks sunlight and reduces temperature under patios and pools, with a clear durability advantage over recycled fabric in lab UV testing. For those seeking a substantial rectangle canopy that balances sun blockage and airflow, this sail is worth considering.

Key Features

• 190 GSM virgin HDPE: A thick, non-recycled fabric gives a sturdier feel and was lab-tested for long-term UV exposure to resist fading and drying out.
• 95% UV blockage: The woven fabric blocks the majority of harmful UV rays and helps lower surface temperatures in shaded areas.
• Breathable weave: Air and water pass through the fabric to prevent pooling and reduce wind load compared with solid canopies.
• Reinforced edges and D-rings: Double layered stitched seams and stainless steel D-rings improve corner strength for secure mounting.
• UV stabilized compound: Treatment in the material helps prevent tearing and fading to extend usable life outdoors.
• 3 year limited warranty: Warranty coverage under normal use gives added confidence in the product's lifespan.

Who It's For

The ColourTree 18 ft x 21 ft rectangle sail is best for homeowners, small business patios and pool areas wanting reliable shade without trapping heat, and for anyone who prefers a breathable woven canopy over solid tops. It suits installations where existing posts, walls or trees can anchor the sail with separate hardware kits.

It is less suitable for buyers who need turnkey mounting hardware included or who expect a completely waterproof cover; installation hardware must be purchased separately and nylon rope is discouraged. Those needing an enclosure that sheds heavy rain should consider a waterproof alternative.

Pros & Cons

Pros

• High-grade 190 GSM virgin HDPE offers stronger UV resistance and feels durable to the touch.
• Blocks 95% of UV and reduces temperature in shaded zones while remaining breathable.
• Stainless steel D-rings and reinforced seams improve attachment strength and longevity.

Cons

• Installation hardware is not included and buyers must supply proper cables and fittings for safe mounting.
• Some users report mixed long-term durability in extreme wind conditions, so heavy weather locations may need extra reinforcement.

Specifications

Product type	Rectangle sun shade sail canopy
Size	18 ft x 21 ft
Material	190 GSM 100% virgin HDPE
UV protection	Blocks 95% of UV
Hardware	Stainless steel D-rings on corners (hardware sold separately)
Breathability	Woven fabric allows air and water flow
Warranty	3 year limited warranty

Our Verdict

The ColourTree 18 ft x 21 ft grey sun shade sail is a practical choice for patios, pools and carports where UV protection and airflow are priorities. Its 190 GSM virgin HDPE and reinforced corners make it good value for buyers who will install proper mounting hardware and avoid using weak ropes; it delivers strong sun blockage and a breathable cover that should outlast many recycled alternatives.

Frequently Asked Questions

Does the sail come with installation hardware?
No. Installation hardware kits and appropriate cables are required and sold separately; each D-ring needs its own cable connection.

Is the fabric waterproof?
No. The woven HDPE is breathable to allow water to pass through, so it will not pool water but it is not a waterproof tarp.

How durable is the material in sun exposure?
The 190 GSM virgin HDPE has been UV tested and treated with a UV stabilized compound to resist fading and drying and is reported to be significantly more durable than recycled alternatives.