ShadeMart 16 ft x 20 ft Blue Sun Shade Sail UPF50 Rectangle Canopy

In this review the ShadeMart 16 ft x 20 ft Blue Sun Shade Sail is evaluated for homeowners and small businesses who need durable, breathable shade. The bottom line: it is best for outdoor areas where heat reduction and UV protection matter more than waterproofing. Made from woven HDPE with stainless steel D rings and heavy duty webbing, the sail blocks up to 95% of UV and noticeably lowers temperatures, making it a reliable, low-maintenance cover for patios, carports, pools, and pergolas.

Key Features

• MATERIAL: Woven HDPE fabric provides a strong, tear-resistant surface that stands up to sunlight while remaining lightweight and easy to handle.
• UV PROTECTION: Blocks up to 95% of harmful UV rays and sunlight, which helps reduce surface and ambient temperatures by around 10 to 15 degrees in direct sun.
• BREATHABILITY: Water permeable and air permeable construction lets rain and wind pass through, reducing strain on attachment points and preventing pooling.
• HARDWARE READY: Stainless steel corner D rings sewn onto heavy duty white webbing give secure anchoring points compatible with common hardware kits for poles, trees, and walls.
• CUSTOM SIZING: Available in multiple sizes and custom options so buyers can match unusual venues, provided they measure carefully before ordering.

Who It's For

The ShadeMart rectangle sail is ideal for homeowners and small property managers who need dependable sun protection over patios, carports, pool areas, or yards and prefer a breathable, low-maintenance fabric. It is especially useful where UV protection and heat reduction are the priorities rather than full waterproof coverage.

People who need a fully waterproof canopy or a precisely engineered rigid structure should look elsewhere; this style is explicitly water permeable and not a waterproof shelter. Also, buyers who require perfectly exact geometric dimensions should allow for some variation from manual measurements when ordering custom sizes.

Pros & Cons

Pros

• Strong woven HDPE material feels durable and has held up for customers in severe weather conditions.
• High UPF rating and significant heat reduction make it an effective sun block for outdoor living spaces.
• Breathable design prevents water pooling and reduces wind lift compared with solid canopies.
• Stainless steel D rings and heavy webbing make installation with common hardware kits straightforward.

Cons

• Not waterproof; light and heavy rain will pass through the fabric by design.
• Size and shape can vary slightly due to manual measurement and cutting, so careful measuring is required.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	16 ft x 20 ft
Material	Woven HDPE (High Density Polyethylene)
UV Protection	Blocks up to 95% of UV rays (UPF50)
Hardware	Stainless steel D rings on heavy duty white webbing
Weather Performance	Water permeable and breathable (not waterproof)

Our Verdict

The ShadeMart 16 ft x 20 ft Blue Sun Shade Sail is a solid value for anyone needing durable UV protection and cooler outdoor spaces without waterproofing. Its woven HDPE build, stainless steel D rings, and breathability make it a practical choice for patios, pool areas, and carports, provided buyers accept some variance in manual sizing and the non-waterproof nature of the fabric.

Frequently Asked Questions

Is this shade sail waterproof?
The sail is water permeable and breathable by design and is not waterproof, so rain will pass through the fabric.

How is the sail attached?
It has stainless steel D rings attached to heavy duty white webbing and can be mounted to poles, trees, walls, or roofs using a suitable hardware kit.

Will it reduce temperature under the sail?
Yes, the woven HDPE fabric blocks most sunlight and UV and typically lowers temperatures in the shaded area by roughly 10 to 15 degrees.