SUNNY GUARD Sun Shade Sail 18ftx20ft Rectangle Charcoal - UV Block

In this review of the SUNNY GUARD Sun Shade Sail 18'x20' Rectangle, the bottom line is simple: this shade sail is best for homeowners and renters who want substantial UV protection and a cooler outdoor space without investing in rigid awnings. The reviewer found the 100% high density polyethylene fabric blocks up to 95% of harmful UV rays and still lets air and water pass, producing noticeable shading and airflow on hot days. Installation is straightforward for a DIYer who follows the sizing guidance and allows extra room for mounting hardware.

Key Features

• UV Protection: The high density polyethylene material blocks up to 95% of UV rays to protect skin and outdoor furnishings.
• Breathable Cooling: The open weave lets air pass through so shaded areas stay cooler than under solid panels while remaining comfortable.
• Durable Construction: Reinforced edges and sturdy fabric resist tearing and hold up well through storms and hot summer conditions.
• Customizable Size: SUNNY GUARD offers custom sizes to fit irregular patios, decks, pergolas, and pool areas when the standard 18'x20' does not fit.
• Included Accessories: The sail ships with 3-4 pieces of thickened rope to help get the shade installed quickly, with optional stainless steel accessories available for longer life.

Who It's For

This shade sail is ideal for people who need a cost-effective, attractive shade solution for a backyard, patio, deck, poolside or sandbox and who prefer a semi-permanent fabric shelter over rigid structures. It suits homeowners in sunny climates who want serious UV reduction and some passive cooling without blocking airflow.

Those who need a perfectly tensioned, permanent architectural canopy or who cannot provide secure anchor points may want a different solution; also, buyers looking for full waterproof coverage should note this is a breathable fabric that allows water to pass.

Pros & Cons

Pros

• High UV block rate keeps shaded spaces noticeably cooler and protects surfaces and skin.
• Breathable fabric avoids heat buildup while allowing rainwater to drain through rather than ponding.
• Reinforced edges and strong weave offer good durability and value compared with more complex awning systems.
• Custom size options and included ropes make it adaptable to many outdoor layouts.

Cons

• Not fully waterproof since the material is breathable; it will not keep out heavy rain like a solid canopy.
• Proper long-term durability depends on installing recommended stainless steel hardware, which is sold separately.

Specifications

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

Our Verdict

The SUNNY GUARD 18'x20' sun shade sail is a practical, value-oriented choice for anyone who wants strong UV protection and improved comfort in outdoor living areas. Its breathable high density polyethylene fabric, reinforced edges, and custom sizing make it a sensible alternative to pricier fixed awnings, provided the buyer plans for proper anchors and optional stainless steel hardware for long-term durability.

Frequently Asked Questions

Will this shade sail block most sun exposure?
Yes, the fabric blocks up to 95% of harmful UV rays, significantly reducing direct sunlight in the shaded area.

Is the sail waterproof?
No, the breathable high density polyethylene fabric allows water to pass through so it is not a waterproof canopy.

Does it include installation hardware?
The package includes 3-4 pieces of thickened rope; for maximum durability the manufacturer recommends purchasing specialized stainless steel accessories separately.