ShadeMart 8ft x 20ft Grey Rectangle Sun Shade Sail - Cool, UV

In this review of the ShadeMart 8' x 20' Grey Sun Shade Sail Rectangle SMSLR Canopy, the bottom line is simple: this is a practical, low-cost way to add reliable UV protection and cooling to patios, carports and poolside equipment. The sail is best for homeowners or renters who want a breathable, durable cover without building permanent structures. The standout reason to buy is its woven HDPE fabric that blocks up to 95% of harmful UV rays while remaining water permeable, so it reduces temperature without trapping moisture underneath.

Key Features

• Material: Woven HDPE fabric provides strength and durability while remaining breathable and resistant to sun degradation.
• UV Protection: Blocks up to 95% of harmful UV rays to help lower temperatures under the sail by at least 10 to 15 degrees.
• Breathability: Water permeable and air permeable construction prevents water pooling and allows airflow for cooler shaded areas.
• Hardware Ready: Stainless steel corner D rings are attached to heavy duty white webbing for secure anchoring to poles, walls or trees.
• Custom Sizing: The manufacturer offers a range of custom sizes so you can order a sail to match unusual venues or specific coverage needs.
• Styling: Rectangle shape and neutral grey color integrate easily with many outdoor designs while serving as a decorative shade piece.

Who It's For

This shade sail is ideal for homeowners, renters, and small business owners who need an affordable, semi-permanent shading solution for patios, carports, pergolas or pool equipment. It works well where airflow and drainage are desired, and for anyone wanting substantial UV reduction without a solid roof.

Those who need a fully waterproof cover, a rigid structure, or precise engineering for heavy snow loads should look elsewhere. Buyers who require small exact-fit window awnings or who cannot anchor to solid points without additional hardware may need other options.

Pros & Cons

Pros

• Durable woven HDPE material with reinforced corners and stainless steel D rings offers solid construction and long wear.
• Effective UV protection that noticeably reduces temperature beneath the sail.
• Breathable, water permeable fabric avoids pooling and allows air circulation for cooler shade.
• Good value compared with building fixed structures; customers report easy installation.

Cons

• Not waterproof, so it will not stop heavy rain from passing through and will not create a dry shelter beneath.
• Size variations can occur due to manual measurements, so careful measuring is required before purchase.

Specifications

Product Shape	Rectangle
Size	8' x 20'
Material	Woven HDPE (High Density Polyethylene)
Corner Hardware	Stainless steel D rings on heavy duty white webbing
Water Resistance	Water permeable (not waterproof)
UV Block	Up to 95% UV reduction
Custom Options	Available in multiple sizes and colors

Our Verdict

The ShadeMart 8' x 20' grey rectangle sail is a sensible, budget-friendly choice for anyone needing shade that breathes and blocks strong UV. It excels where airflow and drainage are important, and its reinforced corners and stainless hardware make installation straightforward. If you want a temporary or semi-permanent way to cool patios, carports or pool equipment without building a roof, this sail delivers solid value.

Frequently Asked Questions

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

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

Will it reduce temperature under the sail?
Yes, the HDPE fabric blocks up to 95% of UV rays and typically lowers temperatures beneath the sail by around 10 to 15 degrees.