20 ft x 20 ft Green Sun Shade Sail UPF50 Square - Heavy Duty Outdoor

Our review of the ShadeMart 20' x 20' Green Sun Shade Sail finds it a practical choice for homeowners and RV owners who need reliable UV protection and airflow. The biggest reason to buy is its combination of durable woven HDPE fabric and stainless steel D rings, which together create a stable, long-lasting canopy that blocks up to 95% of harmful UV rays while remaining water permeable. For those who want a sturdy, breathable shade solution for patios, carports, or pools, this sail balances sun protection and ventilation without pretending to be waterproof.

Key Features

• Material: Woven HDPE fabric provides strong tensile strength and resists fading, offering long-term sun protection in outdoor conditions.
• UV Protection: Blocks up to 95% of harmful UV rays, which helps lower temperatures under the sail by an estimated 10 to 15 degrees.
• Breathability: Water permeable and air permeable design prevents water pooling and allows airflow, reducing wind load and heat buildup.
• Hardware: Corner D rings are stainless steel and attached to heavy duty white webbing for secure anchoring to poles, walls, or trees.
• Custom Sizes: Available in a range of custom sizes so buyers can select dimensions that match patios, carports, or other specific outdoor venues.
• Styling: Rectangle shape and multiple color options let the sail function as both shade and a decorative element for outdoor spaces.

Who It's For

This shade sail is ideal for homeowners, RV owners, and small business operators who need a breathable canopy that reduces sun exposure and lowers surface temperatures. It works well for patios, pergolas, poolsides, and carports where water runoff and airflow are desired features rather than full waterproofing.

Those who need a fully waterproof shelter or precise color matching should look elsewhere; the fabric is not waterproof and customers have reported mixed feedback on exact color tones and dimensions, so careful measurement and expectation management are advised.

Pros & Cons

Pros

• Durable woven HDPE resists fading and provides effective long-term sun protection.
• Stainless steel D rings and heavy webbing make installation robust and secure in high winds.
• Breathable, water permeable design prevents pooling and keeps temperatures lower under the canopy.

Cons

• Not waterproof, so it will not keep out rain for covered seating or storage needs.
• Some buyers report color or exact size differences from listings, so sizing and color expectations may vary.

Specifications

Size	20' x 20'
Shape	Square / Rectangle style
Material	Woven HDPE (High Density Polyethylene)
Hardware	Stainless steel corner D rings with heavy white webbing
Functionality	Water permeable and breathable; not waterproof
UV Protection	Blocks up to 95% of harmful UV rays
Customization	Custom sizes available; measure venue accurately

Our Verdict

The ShadeMart 20' x 20' Green Sun Shade Sail is a smart buy for anyone who wants heavy duty, breathable UV protection that looks good and holds up in windy conditions. It represents solid value when buyers need ventilation and sun blocking rather than full waterproof coverage, just be sure to measure carefully and expect slight variation in color or manual sizing.

Frequently Asked Questions

Is this shade sail waterproof?
The fabric is water permeable and breathable, so it is not waterproof and will allow water to pass through.

Can it be attached to trees or poles?
Yes, the sail uses stainless steel D rings and heavy webbing designed to attach to poles, trees, walls, or roofs with the proper hardware kit.

Does it block UV rays?
Yes, the woven HDPE fabric blocks up to 95% of harmful UV rays and helps lower temperatures beneath the canopy.