Sun Shade Sail 18ftx20ft Rectangle Graphite Grey - UV Block

In this review of the SUNNY GUARD Sun Shade Sail 18'x20' Rectangle Graphite Grey, the bottom line is simple: this is a practical, budget-friendly way to add reliable shade to a backyard, patio or pool area. The reviewer found it best for homeowners who want high sun protection without a permanent structure; the sail blocks up to 95% of UV and uses a breathable high density polyethylene fabric that keeps the area cooler while allowing air and water to pass through. Installation is straightforward for a DIYer and the option for custom sizes is a useful plus.

Key Features

• UV Protection: Blocks up to 95% of harmful UV rays which significantly reduces direct sun exposure for patios and poolside seating areas.
• Breathable Cooling Fabric: The high density polyethylene weave lets air move through the cloth so shaded spaces feel cooler without trapping heat.
• Durable Construction: Reinforced edges and splicing-free fabric construction improve longevity under regular outdoor use and seasonal weather.
• Customizable Size: Available in custom sizes so you can get a close fit for irregular patios, pergolas or carports instead of forcing a standard dimension.
• Installation Accessories: Ships with 3-4 pieces of thickened rope for mounting and recommends stainless steel hardware for long-term durability.
• Made in USA and Warranty: Manufactured in the United States and backed by a 5 year warranty under normal use and weather.

Who It's For

Homeowners with a backyard, deck or pool who want a cost-effective way to create shade will appreciate this sun sail, especially those who value UV protection and a cooler outdoor space. It suits DIY installers who can measure, leave a 0.5-1 ft margin for fixings, and who prefer a breathable solution over solid awnings.

It is less suited to people who need a fully waterproof canopy or who cannot install sturdy anchor points; for covered, leak-free shelter or motorized solutions, a rigid or retractable awning would be a better fit.

Pros & Cons

Pros

• High UV block rate up to 95% provides strong sun protection for outdoor living spaces.
• Breathable 185 GSM high density polyethylene fabric helps keep shaded areas cooler and prevents water pooling.
• Reinforced edges and solid build make the sail feel durable and able to withstand storms and hot summers.
• Custom sizing and included ropes make it easier to fit unusual spaces without major modifications.

Cons

• Not fully waterproof, so it will not replace a rigid roof for rain protection.
• For maximum longevity you should buy the recommended stainless steel hardware separately.

Specifications

Brand	SUNNY GUARD
Material	High density polyethylene (185 GSM)
Size	18 ft x 20 ft rectangle (custom sizes available)
UV Block Rate	Up to 95%
Accessories Included	3-4 pieces of rope (varies by shape)
Origin	Made in USA
Warranty	5 years under normal use and weather

Our Verdict

The SUNNY GUARD 18'x20' shade sail is a smart, value-oriented choice for anyone wanting effective sun protection and a cooler outdoor area without permanent construction. Its breathable HDPE fabric, strong UV blocking and custom size option make it a flexible answer for patios, pools and decks; just plan to use quality stainless fixings for the best long-term results.

Frequently Asked Questions

Does this sail block UV rays?
Yes, the fabric blocks up to 95% of harmful UV rays according to the product specifications.

Is the sail waterproof?
No, the breathable HDPE material allows water to pass through and is not designed as a waterproof canopy.

Are installation fixings included?
The package includes 3-4 pieces of rope, but the manufacturer recommends buying stainless steel sunshade accessories for more durable, long-term mounting.