ShadeMart 9 ft x 20 ft Blue Sun Shade Sail - UPF50 Rectangle

In this review of the ShadeMart 9' x 20' Blue Sun Shade Sail the bottom line is clear: this is a practical, heavy-duty rectangle shade for anyone who needs reliable UV protection and airflow rather than a waterproof canopy. The reviewer found it best for patios, carports and poolside spots where heat reduction and breathability matter most, and appreciated the woven HDPE fabric and stainless steel D rings that make installation feel secure. If you want a decorative, durable sail that blocks sunlight and lowers surface temperatures, this shade sail delivers.

Key Features

• Woven HDPE fabric: The high density polyethylene weave blocks up to 95% of harmful UV rays while remaining breathable to reduce trapped heat.
• Stainless steel corner D rings: Durable attachment points are secured to heavy duty white webbing for a dependable mount to poles or walls.
• Water permeable design: The fabric allows water and air to pass through so rain drains rather than pooling on the sail surface.
• Temperature reduction: The sail significantly lowers temperatures beneath it, making outdoor seating and parking areas noticeably cooler.
• Custom size options: Multiple sizes are available and ShadeMart offers customization when a standard rectangle does not fit your venue.
• Styling versatility: The rectangular shape and blue color act as both shade and a decorative element for patios, pergolas, and carports.

Who It's For

This shade sail is aimed at homeowners and small businesses who need strong sun protection for outdoor living spaces, carports or pool areas where airflow and UV blocking are priorities. Installers who favor breathable, quick-draining fabric will appreciate the water permeable design and reinforced corners for mounting to trees, poles, or roofs.

It is not for buyers who need a waterproof shelter or a perfectly rigid, guaranteed-rectangular panel; customers who must keep heavy rain or snow from penetrating should consider a different, waterproof canopy system. Also measure carefully if you require exact corner geometry because manual sizing can cause slight variations.

Pros & Cons

Pros

• High quality woven HDPE blocks most UV while remaining breathable and long-lasting.
• Stainless steel D rings and heavy duty webbing make attachment secure and durable under tension.
• Water permeable fabric prevents pooling and helps avoid wind damage during storms.
• Easy to install for most DIYers and available in custom sizes to fit nonstandard spaces.

Cons

• Not waterproof, so it will not keep out heavy rain or provide full weatherproof shelter.
• Size and shape can vary slightly due to manual measurements, so precise fits require careful measurement.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	9' x 20'
Material	Woven HDPE (High Density Polyethylene)
UV Protection	Blocks up to 95% of UV rays (UPF50)
Corners	Stainless steel D rings on heavy duty webbing
Water Resistance	Water permeable / not waterproof

Our Verdict

The ShadeMart 9' x 20' Blue Sun Shade Sail is a sensible value for anyone who needs robust sun protection with good airflow and durable attachment points. It is particularly well suited to patios, carports and poolside areas where cutting heat and blocking UV are priorities, though buyers seeking waterproof coverage should look elsewhere. Overall, it balances durability, sun blocking and style at a fair price.

Frequently Asked Questions

Is this shade sail waterproof?
The sail is water permeable and breathable, not waterproof, so it allows rain to pass through rather than shedding it.

Can this be mounted to trees or poles?
Yes, the stainless steel D rings and heavy duty webbing allow attachment to poles, trees, walls or roofs with appropriate hardware.

Will it reduce the temperature under the sail?
Yes, the woven HDPE fabric blocks most UV and typically lowers temperatures beneath it, making shaded areas noticeably cooler.