Premium Shade Sail - 17ft-9in Square - Ultimate 95% UV Protection by Coolaroo
350gsm - 15yr Warranty - The Best
ID#: COO-PSS-SQR17-9
Brand: Coolaroo
SKU#: PSS-SQR17-9
Retail Price: $411.97
Our Price: $294.95
You Save $117.02 or 28.40%
Questions & Answers about Premium Shade Sail - Square 17ft 9in by Coolaroo
How do I properly install a shade sail, and what are the most common mistakes to avoid?
Proper installation requires strong, reliable anchor points and correct tension. Your anchor points, such as sturdy poles or existing structures, must be able to withstand significant force from wind. You should use marine-grade hardware, including turnbuckles, to pull the sail taut and adjust it as needed. If you are installing a waterproof sail, you must create a slope of at least 20 degrees to prevent rainwater from pooling.
The most common installation mistakes include:- Anchoring to weak structures like a wooden fence or insufficient posts
- Using inadequate or cheap hardware that can rust or fail. Shade sail hardware needs to be stainless steel.
- Not properly tensioning the sail causes the sail to be droopy and allows it to flap in the wind which stresses the fabric and stitching greatly reducing its lifespan.
- With waterproof sails is installing them too flat. Even a small amount of rainwater can cause the fabric to sag, creating a deeper pocket that collects more water. This compounding weight will eventually lead to a failure of either the sail, its attachment hardware, or the mounting points. (Answered by our BackyardCity.com Experts)
What is a shade sail, and how does it work?
A shade sail is a modern, tensioned fabric canopy that provides effective sun protection for any outdoor space. Inspired by a ship's sail, it is made from durable, UV-resistant materials like high-density polyethylene (HDPE) or acrylic canvas. The sail is anchored, with about 150lbs of tension, at its corners to poles, walls, or other sturdy structures, creating a stable and wind-resistant cover. Known for their aesthetic appeal and versatility, shade sails are a popular solution for creating comfortable outdoor recreational environments in both residential and commercial settings, including patios, decks, pools, playgrounds, courtyards and dining areas.
(Source: Enhanced by BackyardCity.com)
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How the Premium Shade Sail - Square 17ft 9in is expected to Ship.
Features of Premium Shade Sail - Square 17ft 9in
- Made from ~350gsm lock-stitched UV-stabilized HDPE fabric
- Blocks up to 95% of harmful UV rays
- Breathable fabric prevents heat buildup
- Resists rotting, cracking, mold, and mildew
- Stainless steel D-rings on each corner for secure installation
- Reinforced stitched edges for enhanced durability
- Operates in temperatures from -22°F to 158°F
- Mounting hardware included: 2 stainless steel turnbuckles, 2 spring clips, 4 pad-eyes, and a strap tensioner
- 15-Year Warranty - Backed by The Best Premium Shade Sail Warranty against UV degradation.
Benefits of Premium Shade Sail - Square 17ft 9in
- 95% UV Protection: Shields you and your family from harmful sun exposure.
- Cooler Outdoor Spaces: Breathable fabric reduces temperatures by allowing heat to escape.
- Long-Lasting Durability: Fade and tear-resistant HDPE fabric withstands harsh weather.
- Easy Installation: Pre-attached D-rings and included hardware makes setup a breeze.
- Stylish Design: Available in Graphite, Slate, and Stone to complement any outdoor aesthetic.
- Peace of Mind: Backed by Coolaroo's industry-leading guarantee.
Premium Shade Sail - Square 17ft 9in Product Reviews
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Premium Shade Sail - 17ft-9in Square - Ultimate 95% UV Protection by Coolaroo
350gsm - 15yr Warranty - The Best

Transform your outdoor space with the Coolaroo Premium Square Shade Sail, the ultimate solution for stylish, durable, and effective shade. Engineered with ~350gsm lock-stitched HDPE fabric, these shade sails block up to 95% of harmful UV rays, keeping your patio, pool, or backyard cool and safe. With a 15-year warranty, stainless steel mounting hardware, and vibrant colors like Graphite, Slate, and Stone, Coolaroo Premium Square Shade Sails deliver unmatched quality and longevity. Perfect for backyards, pools, or commercial spaces, these sails combine beauty and function for year-round comfort.
Where to Use Premium Square Shade Sails
Coolaroo Square Shade Sails are perfect for:
- Backyard patios & decks
- Poolside shade
- Play areas for kids
- Outdoor dining & BBQ spaces
- Patio seating & smoking zones in commercial settings
Don't compromise on sun protection. Order your Coolaroo Premium Square Shade Sail today
Premium Shade Sail Colors
Last Updated: 09/05/2025 02:13 PM - ID:6867