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

In this review of the ColourTree 18' x 18' Green Sun Shade Sail Canopy, the bottom line is straightforward: anyone needing a durable, high-coverage shade for a patio, poolside, carport or balcony will appreciate the robust construction and strong UV protection. The reviewer found the sail's single biggest advantage is its 190 GSM virgin HDPE fabric that is both breathable and engineered for long life, making it a practical choice for seasonal outdoor use where heat reduction and UV blockage matter.

Key Features

• 190 GSM virgin HDPE: The thick, non-recycled fabric stands up to sun exposure longer than recycled alternatives, improving long-term durability.
• UV stabilized compound: Laboratory-tested material resists drying, tearing and fading so the canopy keeps its shape and color over time.
• 95% UV blockage: The woven fabric significantly reduces harmful UV and lowers ambient temperature in the shaded area for more comfortable outdoor use.
• Breathable woven design: Air and water pass through the fabric so rain does not pool and a cooler microclimate is maintained beneath the canopy.
• Reinforced edges and stainless D-rings: Double-layer stitched seams and heavy stitching at corners keep the sail from fraying and make hanging secure when paired with proper hardware.
• 3 year limited warranty: Manufacturer warranty covers normal weather and use, offering reasonable protection for the expected service life.

Who It's For

This shade sail is aimed at homeowners and property managers who want a heavy duty, long-lasting sunshade that blocks most UV and reduces heat in outdoor living spaces. It suits patios, poolside seating, carports and balconies where a square 18' x 18' canopy provides generous coverage and a neat, modern look.

It is less suited for people who cannot provide proper attachment points or who expect a fully waterproof shelter; the fabric is breathable and allows water through, so if a watertight canopy is required a tarp or different material would be a better choice.

Pros & Cons

Pros

• Very durable 190 GSM virgin HDPE material resists UV damage and extends lifespan compared to recycled fabric.
• Blocks up to 95% of harmful UV while remaining breathable, reducing heat under the sail.
• Robust construction with double-stitched edges and stainless steel D-rings for secure mounting.
• Low maintenance; breathable design prevents water pooling and holds up in rain and wind.

Cons

• Requires separate hardware kits and suitable anchor points; installation costs and effort are additional.
• Size expectations vary slightly among buyers, so careful measurement before ordering is recommended.

Specifications

Product type	Square sun shade sail canopy
Size	18' x 18'
Material weight	190 GSM
Fabric	100% virgin HDPE, UV stabilized
UV protection	Up to 95% UV blockage
Attachments	Stainless steel D-rings at corners
Warranty	3 year limited warranty

Our Verdict

The ColourTree 18' x 18' Green Sun Shade Sail is a smart buy for those who need a sturdy, high-coverage shade that dramatically reduces sun and heat. Its virgin 190 GSM HDPE fabric and reinforced construction deliver durability and low maintenance, making it good value for patios, pools and carports when paired with proper installation hardware.

Frequently Asked Questions

Does this sail block most UV?
The fabric is rated to block up to 95% of harmful UV, helping reduce sunlight and temperature under the canopy.

Is the material waterproof?
The woven HDPE is breathable and allows water through, so it prevents pooling but is not fully waterproof.

Are mounting kits included?
Mounting hardware is sold separately; each D-ring requires a cable or hardware kit and nylon ropes are not recommended.