Custom Size 11ft x 15ft x 18.6ft Black Right Triangle Shade Sail

Our review of this custom right triangle shade sail finds it best suited for homeowners and light commercial spaces that need a tailored sun cover with strong UV defense. The biggest reason to consider it is simple: the sail blocks up to 95% of UV and lowers ambient temperature by as much as 15 degrees, making it practical where reliable sun protection and cooling matter most. Installation is flexible, the material feels substantial, and the reinforced corners and stainless steel D-rings aim to extend useful life.

Key Features

• 95% UV protection: The 200 GSM HDPE knit fabric blocks up to 95% of harmful rays for safer outdoor use and sun-sensitive activities.
• Temperature reduction: The sail can lower shaded surface temperatures by up to 15 degrees compared with unshaded areas for more comfortable outdoor time.
• Custom sizing: Measurements are taken D-ring to D-ring so the canopy fits irregular spaces and can be ordered to match specific layout needs.
• Durable construction: Reinforced edges, double-layer stitching, and stainless steel D-rings improve resistance to tearing and provide stronger attachment points.
• Permeable design: The fabric is water and air permeable, allowing drainage and airflow while still providing shade.
• Installation flexibility: The sail mounts to trees, roofs, walls, or poles and works with common hardware kits when corner gaps and tension are accounted for.

Who It's For

This shade sail is ideal for homeowners with patios, pools, or play areas who want a tailored fit and high UV blockage without a permanent structure. It also suits small businesses or cafes needing a cost-effective outdoor canopy that reduces heat and still allows airflow.

Those who should look elsewhere include buyers expecting a rigid waterproof awning or a guaranteed multi-year lifetime in extreme sun and salt exposure; durability feedback is mixed and one report noted failure after just over a year, so very high-exposure coastal or harsh commercial sites may prefer heavier engineered canopies.

Pros & Cons

Pros

• High UV protection provides meaningful sun defense for family and customers.
• Material and reinforced stitching feel robust and support repeated tensioning.
• Custom D-ring sizing makes it straightforward to fit odd-shaped areas.
• Permeable fabric reduces wind uplift and allows rain to pass, avoiding pooling.

Cons

• Durability is mixed in customer reports; some units lasted well over a year while others showed accelerated wear in heavy sun.
• Not fully waterproof, so it does not replace a hard or sealed awning for full rain protection.

Specifications

Shape	Right triangle
Size	11' x 15' x 18.6'
Material	200 GSM HDPE knit
UV Blockage	Up to 95% (UPF50+)
Edge & Hardware	Reinforced edges with stainless steel D-rings
Permeability	Water and air permeable
Assurance	3 years included

Our Verdict

For anyone who needs a custom-fit sun sail that prioritizes UV protection and cooler shaded areas, this model represents good value thanks to heavy 200 GSM fabric, reinforced fittings, and temperature reduction benefits. It is especially well suited to residential patios and moderate commercial use, but buyers in extremely harsh environments should weigh mixed durability reports against their exposure levels.

Frequently Asked Questions

Is this shade sail waterproof?
Answer. The fabric is water permeable so it sheds rain by allowing water to pass through rather than forming a sealed, waterproof cover.

How should I measure for a custom fit?
Answer. Measure from D-ring to D-ring for each corner and provide those dimensions so the sail can be tailored to the attachment points and desired tension.

What mounting gap is recommended at corners?
Answer. For optimal performance leave at least 0.5 ft between D-rings and poles, or adjust by reducing 1 to 1.5 ft per side as needed for tighter installations.