Custom Size 18ft x 21ft x 27.7ft Turquoise Triangle Sun Shade Sail

Our review of this custom size turquoise triangle sun shade sail finds it best suited for homeowners and small commercial spaces that need reliable UV protection and a tailored fit. The biggest reason to consider it is the combination of strong sun blockage and customization: made from 200 GSM HDPE with UPF50+ construction it promises up to 95% UV blockage while allowing air and water to pass, which keeps outdoor areas cooler and more comfortable. Installation requires some planning, but the reinforced D-rings and stainless steel hardware give confidence for longer use.

Key Features

• 95% Sun Protection: The 200 GSM HDPE fabric blocks up to 95% of harmful UV rays for safer outdoor time.
• Temperature Reduction: The breathable weave can lower surface temperature by up to 15 degrees compared to unshaded spots.
• Custom Fit: Made to order from D-ring to D-ring so the sail matches the exact dimensions you need for a tailored canopy.
• Durable Construction: Stainless steel D-rings, reinforced edges and double-layer stitching help resist fraying and extend service life.
• Permeable Design: Water and air permeability reduces wind load and pooling, improving performance in variable weather.
• Easy Adjustments: Can be mounted to trees, roofs, walls or poles and trimmed or reordered for straight-edge preferences.

Who It's For

This shade sail is ideal for homeowners, small business patios, or backyard projects where a specific triangular footprint is required and sun protection is the priority. People who want a neat, made-to-measure canopy for seating areas, play spaces, or animal enclosures will appreciate the custom sizing and sturdy fittings.

It is less appropriate for buyers who need an off-the-shelf standard size without waiting for a made-to-order product, or for those who require a fully waterproof shelter; the fabric is water permeable and designed for shade and airflow rather than complete rainproof coverage.

Pros & Cons

Pros

• High UV blockage from the 200 GSM HDPE material offers reliable sun protection.
• Custom sizing ensures a better fit for irregular or specific installation points.
• Robust hardware and reinforced stitching improve durability and longevity.
• Permeable fabric reduces wind stress and prevents water pooling.

Cons

• Some customers report the finished sail can feel smaller than expected, so precise measurement is essential.
• Not intended as a fully waterproof canopy, so it will not provide complete rain protection.

Specifications

Shape	Triangle
Custom Size	18' x 21' x 27.7' (made to order D-ring to D-ring)
Material	200 GSM HDPE
UV Blockage	Up to 95% (UPF50+)
Permeability	Water and air permeable
Hardware	Stainless steel D-rings, reinforced edges
Assurance	3 years

Our Verdict

This custom triangle shade sail is a solid choice for anyone who needs high sun protection and a tailored canopy. Its 200 GSM HDPE fabric and reinforced fittings deliver durable, cooling shade, and the made-to-order sizing is a standout benefit for awkward or specific layouts. It represents good value when UV protection and a neat fit matter more than full waterproofing.

Frequently Asked Questions

Is this sail waterproof?
The fabric is water permeable, so it sheds some water but is not designed as a fully waterproof shelter.

How should I measure for a custom order?
Measure from D-ring to D-ring at the intended mounting points and allow for the recommended gap from poles or structures when placing your order.

Can it be mounted to trees or walls?
Yes, the sail can be attached to trees, roofs, walls, or poles using appropriate mounting hardware and spacing recommendations.