Custom Size Right Triangle Sun Shade Sail 11ft x 13ft x 17ft - Cool UV

Our review of this custom size right triangle sun shade sail finds it best suited for homeowners and small commercial spaces needing tailored UV protection without a rigid canopy. The biggest reason to buy is its combination of heavy-duty 200 GSM HDPE fabric and reinforced hardware that together deliver 95% sun protection and a measurable drop in surface temperature. The sail is made to order from D-ring to D-ring, so it fits awkward or nonstandard areas where a prefab umbrella or pergola would not work.

Key Features

• 95% UV block: The 200 GSM HDPE material is designed to block up to 95% of UV rays for safer outdoor time in sun-exposed areas.
• Temperature reduction: The shade sail can lower air and surface temperatures by up to 15 degrees compared with unshaded spots, improving comfort on hot days.
• Custom size fit: Made to order with measurements taken from D-ring to D-ring, the sail can be tailored to fit irregular locations and specific mounting points.
• Durable construction: Stainless steel D-rings, reinforced edges and double-layer stitching reduce fraying and increase service life for seasonal use.
• Permeable design: The fabric is water and air permeable, so it sheds heat and wind without acting like a solid sail in breezy conditions.
• Flexible installation: Can be attached to trees, roofs, walls or poles, and the instructions note corner gaps and trim guidance for best tension.

Who It's For

This shade sail is ideal for homeowners with patios, decks, small commercial terraces, playgrounds or animal enclosures who need a tailored cover that fits nonstandard geometry. It also appeals to those who prioritize UV protection and cooler outdoor temperatures without a permanent structure.

People who should look elsewhere include buyers who need a rigid, waterproof canopy for continuous heavy rain protection or those who prefer an off-the-shelf size and immediate availability rather than a custom-made product that requires measurement and lead time.

Pros & Cons

Pros

• High UV blockage from 200 GSM HDPE provides strong sun protection and cooler shade.
• Custom sizing from D-ring to D-ring delivers a tailored fit for awkward spaces.
• Stainless steel D-rings and reinforced stitching enhance durability and longevity.
• Air and water permeability reduces wind load and prevents puddling in light rain.

Cons

• Because items are custom made, lead time and precise measuring are required and the sail can feel smaller than expected if measurements are off.
• Not a fully waterproof canopy, so it will not replace a solid roof for heavy rain protection.

Specifications

Shape	Right triangle
Custom size example	11' x 13' x 17' (made to order)
Material	200 GSM HDPE
UV protection	Up to 95% blockage
Permeability	Water and air permeable
Hardware	Stainless steel D-rings, reinforced edges
Warranty	3 years assurance

Our Verdict

The custom right triangle shade sail is a practical, value-oriented choice for anyone who needs reliable UV protection and a cooler outdoor area without building a permanent structure. It suits patios, yards and utility uses where a made-to-measure fit is important, and the durable materials and reinforced hardware make it a good long-term option provided the buyer accepts a permeable rather than fully waterproof cover.

Frequently Asked Questions

Can this sail be trimmed or adjusted on site?
Yes, the product is made from HDPE fabric and can be trimmed slightly during installation; follow the recommended corner gap guidance for best tension.

Will it stop rain?
The fabric is water permeable, so it sheds heat and reduces sun but is not designed as a fully waterproof canopy for heavy rain.

How durable are the corners and rings?
Corners use stainless steel D-rings with reinforced edges and double-layer stitching for improved resistance to fraying and normal seasonal wear.