ShadeMart 19 ft x 24 ft Black Rectangle Sun Shade Sail - UPF50
ShadeMart 19 ft x 24 ft Black Rectangle Sun Shade Sail - UPF50
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In this review the ShadeMart 19' x 24' Black Rectangle Sun Shade Sail is evaluated for homeowners and small commercial users who need large, reliable sun protection without sealing out air and water. The bottom line: this shade sail is best for anyone who wants durable UV protection and airflow over patios, carports or pools while maintaining reduced temperatures under the canopy. The review focuses on build, installation and everyday performance based on the product description and user feedback.
Key Features
- Material: Woven HDPE fabric provides a strong, tear-resistant canopy that blocks up to 95% of harmful UV rays while remaining breathable.
- Corner hardware: Stainless steel D rings at each corner, attached to heavy duty white webbing, make anchoring the sail secure and resistant to rust.
- Water and air permeable: The fabric allows water and air to pass through, so it wont pool in rain and helps keep the shaded area cooler and ventilated.
- Temperature reduction: The sail significantly lowers temperatures beneath it by an estimated 10 to 15 degrees, improving outdoor comfort during hot weather.
- Custom sizing: A variety of custom sizes are available to fit irregular sites, so measuring your venue accurately lets you get a tailored fit.
- Styling versatility: The rectangle shape and multiple color options let the sail function as both shade and an integrated decorative element for yards, patios and carports.
Who It's For
This shade sail suits homeowners, RV owners and small businesses who need a heavy duty, UV-blocking canopy that still allows airflow and rain to pass through. It is especially useful for patios, carports, pergolas and poolside areas where reducing sun exposure and temperature are priorities.
Those who need a fully waterproof cover or require a rigid frame system should look elsewhere; this style is specifically a breathable, water permeable fabric and not intended as a waterproof tarp or replacement for a hard carport roof.
Pros & Cons
Pros
- Durable woven HDPE construction and reinforced double webbing along edges for long term use.
- Stainless steel D rings and reinforced corners make installation secure and improve wind and weather resistance.
- Effective sun protection, blocking up to 95% of UV and noticeably reducing temperature under the canopy.
- Maintains airflow and drains water, so it does not trap heat or collect water after rain.
Cons
- Not waterproof, so it will not provide full rain protection during heavy storms.
- Color can vary and customers note size measurements must be accurate because small manual variations occur.
Specifications
| Brand | ShadeMart |
| Shape | Rectangle |
| Size | 19' x 24' (custom sizes available) |
| Material | Woven HDPE (High Density Polyethylene) |
| UV Protection | Blocks up to 95% of UV rays (UPF50) |
| Hardware | Stainless steel D rings with heavy duty white webbing |
| Weather | Water and air permeable, not waterproof |
Our Verdict
The ShadeMart 19' x 24' rectangle shade sail is a practical, good-value choice for anyone wanting robust UV protection with airflow and drainage. It performs well in windy conditions when properly mounted and is a better option than lightweight fabrics for long term outdoor use; choose it for patios, carports and RV covers but not when you need complete waterproofing.
Frequently Asked Questions
Is this sail waterproof?
No. The fabric is water permeable and breathable; it allows water to pass through rather than creating a waterproof barrier.
Will the corners corrode?
The corner D rings are stainless steel and attached to reinforced webbing to resist rust and hold up in wet conditions.
Can I customize the size?
Yes. ShadeMart offers custom sizes; measure your space carefully because manual measurement variations can occur.
Editor's Take
The ShadeMart 19' x 24' rectangle shade sail delivers strong UV protection and airflow, making it a durable, good-value choice for patios, carports and RV covers when waterproofing is not required.

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