Custom Size 11ft x 18ft x 21.1ft White Right Triangle Sun Shade Sail

Our review looks at the Custom Size 11' x 18' x 21.1' White Right Triangle Sun Shade Sail and finds it best suited for homeowners or small businesses who need a tailored shading solution with strong UV protection. The single biggest reason to buy is its combined sun performance and customizable fit: the 200 GSM HDPE fabric blocks up to 95% of UV while offering measured D-ring to D-ring sizing so the sail can be matched precisely to odd-shaped areas. Installation is straightforward for anyone comfortable with basic hardware, and the fabric reduces temperatures noticeably under the sail for more comfortable outdoor use.

Key Features

• 95% sun protection: The 200 GSM HDPE material blocks up to 95% of harmful UV rays to protect people and furniture beneath the sail.
• Temperature reduction: Users can expect up to a 15 degree drop in perceived temperature compared with unshaded areas for a cooler outdoor spot.
• Custom sizing: The sail is made to order from D-ring to D-ring so it fits irregular spaces and can be tailored for straight edges on request.
• Durable construction: Stainless steel D-rings, reinforced edges and double-layer stitching increase longevity and resist fraying under normal use.
• Breathable and water permeable: The fabric lets air and water pass through, reducing wind load and preventing pooled water on the canopy.
• Flexible installation: The sail can be mounted to trees, roofs, walls or poles using common hardware kits for a variety of layouts.

Who It's For

This shade sail is ideal for homeowners with patios, decks, pool decks or play areas that need a precise fit and strong UV protection, and for small commercial settings such as cafe patios that want a cost-effective canopy option. People who value a cooler shaded area and the option to customize straight edges will appreciate the made-to-measure approach.

It is less suitable for buyers who need a fully waterproof awning or who expect many years of maintenance-free life in extremely harsh sun without occasional replacement; customer feedback shows generally good durability but mixed long-term results in the most severe exposures.

Pros & Cons

Pros

• High UV blocking performance provides reliable sun protection for people and furnishings.
• Custom sizing from D-ring to D-ring ensures a tailored fit for irregular spaces.
• Stainless steel D-rings and reinforced edges with double stitching improve strength and reduce fraying.
• Breathable, water-permeable fabric reduces wind load and avoids water pooling.

Cons

• Durability is mixed in extreme conditions; some users report shorter lifespans under the harshest sun exposure.
• Not fully waterproof, so it will not keep heavy rain completely out.

Specifications

Our Verdict

The Custom Size 11' x 18' x 21.1' White Right Triangle Sun Shade Sail is a practical, value-oriented choice for anyone needing tailored shade with strong UV protection. Its custom fit, breathable fabric and reinforced construction make it a good pick for patios and commercial outdoor seating, though those seeking complete waterproofing or indefinite life in the harshest sun should plan for eventual replacement.

Frequently Asked Questions

Is this sail fully waterproof?
No. The 200 GSM HDPE fabric is water permeable so it will not pond water but is not a fully waterproof awning.

How should I measure for a custom fit?
Measure from D-ring to D-ring for each side and allow the recommended corner gap; the sail is made to those D-ring measurements for a tailored fit.

How long does it last in sun exposure?
Many users find good multi-year life and sturdiness, but durability can vary; some report over a year and a half while others in extreme sun saw degradation sooner.