ShadeMart 21 ft x 24 ft Turquoise Rectangle Sun Shade Sail - UPF50

In this review of the 21 ft x 24 ft Turquoise Rectangle Sun Shade Sail from ShadeMart, the bottom line is clear: this is a practical, heavy duty shade solution for outdoor spaces that need broad UV protection and airflow. The reviewer finds it best for homeowners, boat owners, and small commercial areas that want a large, colorfast canopy that blocks sun while remaining breathable. Its standout quality is the woven HDPE fabric with stainless steel D rings and reinforced webbing, which together deliver durable, low-maintenance shade rather than full waterproof cover.

Key Features

• Woven HDPE fabric: The material provides strong sun protection while remaining breathable, so heat is reduced without trapping moisture.
• UPF50 sun protection: The fabric blocks up to 95% of harmful UV rays, cutting direct sun exposure and cooling covered areas noticeably.
• Stainless steel D rings: Heavy duty D rings attached to white webbing give secure anchor points that stand up to tension and outdoor conditions.
• Water permeable design: The canopy allows water and air to pass through, preventing pooling and reducing wind lift under typical conditions.
• Custom sizing available: ShadeMart offers multiple sizes so buyers can match the sail to patios, carports, or pool areas when measured accurately.
• Decorative rectangle shape: The turquoise color and clean rectangle styling integrate with many outdoor designs while delivering functional shade.

Who It's For

This shade sail is best for people who need broad, UV-blocking coverage and airflow: homeowners covering patios, pergolas, carports, or boat owners wanting sun protection over a vessel. It is also suitable for small businesses seeking an inexpensive way to add shade over seating or display areas.

Those who need a fully waterproof canopy, an integrated frame, or a tension system included should look elsewhere, because this model is water permeable and is sold as fabric with reinforced corners rather than a complete hardware kit.

Pros & Cons

Pros

• High quality woven HDPE fabric that resists tearing and keeps color well under sunlight.
• Effective UV blocking that helps lower temperatures beneath the sail by a noticeable amount.
• Stainless steel D rings and heavy webbing provide reliable anchor points for installation.
• Breathable, water permeable fabric prevents pooling and reduces wind stress on the canopy.

Cons

• Not waterproof, so it will not keep areas fully dry during rain.
• Requires accurate measuring and separate hardware for a secure installation, which adds planning time.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	21 ft x 24 ft
Material	Woven HDPE (High Density Polyethylene)
UV Protection	UPF50, blocks up to 95% of UV rays
Corners	Stainless steel D rings with heavy duty white webbing
Water Resistance	Water permeable and breathable (not waterproof)

Our Verdict

The ShadeMart 21 ft x 24 ft Turquoise Rectangle Sun Shade Sail is a sensible choice for anyone who prioritizes UV protection, breathability, and durable anchor points over full waterproofing. It delivers good value for patios, carports, and boat covers when paired with proper hardware and accurate measurements, offering long-lasting shade and a straightforward way to cool outdoor spaces.

Frequently Asked Questions

Is this shade sail waterproof?
Answer. No, this style is water permeable and breathable so it will not provide full waterproof coverage during rain.

What hardware is included?
Answer. The product includes reinforced corners with stainless steel D rings; separate mounting hardware and tensioning kits are recommended for installation.

Will it reduce temperature under the sail?
Answer. Yes, the fabric blocks up to 95% of UV rays and can lower temperatures under the canopy by a noticeable margin.