ShadeMart 17 ft x 20 ft Green Sun Shade Sail UPF50 - Heavy Duty

In this review the ShadeMart 17 ft x 20 ft green rectangle sun shade sail is evaluated for homeowners and RV owners who want reliable sun protection without full waterproofing. The reviewer found the biggest reason to buy is its combination of heavy duty woven HDPE construction and stainless steel corner D rings that create a durable, breathable canopy able to block up to 95% of harmful UV rays while lowering ambient temperature by 10 to 15 degrees. This makes it a practical choice for patios, carports, pergolas and temporary outdoor covers.

Key Features

• Material: Woven HDPE fabric provides a sturdy, fade-resistant surface that lets air pass through while blocking most UV rays.
• UV Protection: Rated UPF50 and able to block up to 95% of sunlight, the sail noticeably reduces heat under the canopy on sunny days.
• Hardware: Stainless steel corner D rings attached to heavy duty white webbing create reliable anchor points for ropes or turnbuckles.
• Breathability: The water permeable design allows rain and wind to pass through, preventing pooling and reducing wind load on the fabric.
• Custom Size Options: A range of custom sizes is available so buyers can match uncommon span requirements when standard sizes do not fit.
• Styling: Rectangle shape and multiple color options make it simple to integrate into existing outdoor decor.

Who It's For

This shade sail is best for homeowners, RV owners and small businesses who need large-area sun protection that breathes and resists UV damage. It is ideal for patios, carports, pergolas, poolside seating and temporary covers where ventilation is important and full waterproofing is not required.

People who need a completely waterproof canopy or a permanent roof replacement should look elsewhere; likewise, buyers who require guaranteed exact dimensions without any manual measurement variance should plan for professional measuring or consider a tailored fabrication service.

Pros & Cons

Pros

• Durable woven HDPE fabric that resists fading and holds up well in windy conditions.
• Blocks significant UV radiation while allowing airflow to lower temperatures beneath the sail.
• Stainless steel D rings and heavy webbing provide sturdy, corrosion-resistant anchor points.
• Custom size options and multiple colors make it adaptable to many outdoor layouts.

Cons

• Not waterproof, so it will not prevent water from passing through during rain events.
• Customer reports show mixed results on exact shade color and precise measured dimensions, so verify sizing and color expectations before ordering.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	17 ft x 20 ft
Material	Woven HDPE (High Density Polyethylene)
Hardware	Stainless steel corner D rings with heavy duty white webbing
Functionality	Water permeable, breathable, UPF50 UV resistant

Our Verdict

The ShadeMart 17 ft x 20 ft green rectangle shade sail is a solid value for anyone needing breathable, UV-blocking coverage over large outdoor spaces. Its heavy duty HDPE fabric and stainless steel D rings deliver durability and ease of installation, while the water permeable design prevents pooling. Choose it when UV protection and airflow matter more than full waterproofing, and confirm measurements and color expectations before purchase.

Frequently Asked Questions

Is this shade sail waterproof?
The fabric is water permeable and not waterproof, so water will pass through rather than bead on the surface.

How much UV does it block?
The sail is UPF50 rated and blocks up to 95% of harmful UV rays to significantly reduce sun exposure.

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