Right Triangle Grey Shade Sail 21ft x 24ft x 31.9ft - Heavy Duty UPF50

In this review we look at the ColourTree custom right triangle shade sail sized 21ft x 24ft x 31.9ft, a heavy duty option intended for patios, pools and carports. The bottom line: this sail is for anyone who needs broad, durable sun protection from a breathable fabric that blocks harsh rays without trapping heat. Our review finds the strongest reason to buy is the 190 GSM 100% virgin HDPE material treated with a UV stabilized compound, which promises longer life and consistent color under prolonged sun.

Key Features

• 190 GSM virgin HDPE: Thick, non-recycled fabric gives improved durability and resistance to tearing compared with recycled options.
• UV stabilized compound: Laboratory-tested material resists fading and drying out after extended sun exposure, extending usable life.
• 95% UV blockage: The woven fabric blocks most harmful UV rays and lowers direct sunlight in shaded areas for cooler outdoor spaces.
• Breathable mesh design: Allows air and water to pass through so rain does not pool and ventilation reduces heat buildup under the sail.
• Reinforced edges and stainless D-rings: Double layered stitched seams and heavy stitching at corners help maintain shape and provide secure anchor points.
• Three year limited warranty: Coverage under normal use provides added confidence in a custom-made product.

Who It's For

This shade sail is a good fit for homeowners and light-commercial users who want a large custom-sized canopy for patios, pools, balconies or carports and who value long-term UV resistance. The heavy 190 GSM virgin HDPE is aimed at buyers who expect sustained sun exposure and want a fabric that resists fading and tearing.

Those who need a rapid DIY install should note that hardware kits are sold separately and strong cable attachments are required; people wanting an all-in-one kit or a waterproof solid canopy should look elsewhere. Also, if you need exact off-the-rack sizing without custom lead times, a pre-cut sail might be simpler.

Pros & Cons

Pros

• Excellent durability from 190 GSM 100% virgin HDPE for long-term sun exposure.
• High UV blockage reduces heat and protects outdoor areas effectively.
• Breathable weave prevents water pooling and improves comfort under the sail.
• Reinforced edges and stainless steel D-rings make attachment secure when used with proper cables and hardware.

Cons

• Installation requires separate hardware and proper cable rigging, which adds cost and some complexity.
• Custom sizes take 3-7 business days to make, so not instant for last-minute needs.

Specifications

Shape	Right triangle
Size	21ft x 24ft x 31.9ft
Material weight	190 GSM
Fabric	100% virgin HDPE (UV stabilized)
UV protection	Blocks 95% of UV
Edges and corners	Double layered stitched seams with stainless steel D-rings
Warranty	3 years limited

Our Verdict

For anyone needing a sturdy, long-lasting shade solution for a large outdoor area, this custom right triangle sail is a solid value thanks to its 190 GSM virgin HDPE and UV-stabilized finish. It performs well at reducing sun and heat, looks good over patios and pools, and will outlast many recycled alternatives, though buyers should budget for hardware and allow the brief production lead time.

Frequently Asked Questions

Is hardware included?
No. Installation hardware kits and cable are sold separately and are required for proper mounting.

Will water pool on the sail?
No. The breathable woven fabric allows water to pass through so pooling is not expected in normal rain.

How long does custom sizing take?
Custom size orders are made in 3-7 business days before shipping.