ShadeMart 11ft x 13ft Blue Sun Shade Sail UPF50 Rectangle - Cool

In this review of the ShadeMart 11' x 13' Blue Sun Shade Sail, the bottom line is simple: this fabric sail is for anyone who wants reliable sun protection and cooler outdoor space without a permanent structure. The sail is made from woven HDPE with stainless steel D rings and heavy duty webbing, and the biggest reason to buy is its combination of breathability and UPF50 sun blocking that noticeably lowers temperature. The delivery is a practical, durable sun screen rather than a waterproof canopy, and it excels where airflow and UV protection matter most.

Key Features

• Woven HDPE fabric: offers strong, tear-resistant coverage that blocks up to 95% of harmful UV rays while remaining breathable.
• Stainless steel D rings: provide secure attachment points that resist corrosion when mounted outdoors.
• Water permeable design: allows rain and air to pass through so the sail does not collect water and reduces wind load on fastenings.
• Temperature reduction: the shade fabric helps lower perceived temperature in shaded areas by roughly 10 to 15 degrees, improving comfort on hot days.
• Custom size options: ShadeMart offers made-to-measure sails so customers can order specific dimensions for patios, carports, and pool areas.
• Decorative rectangle shape: functions as both practical shade and a visual element that integrates with outdoor design schemes.

Who It's For

This shade sail is well suited for homeowners with patios, carports, pergolas, or pool areas who want an affordable, semi-permanent sun screen that improves comfort and blocks UV. It is also a good fit for renters or those who prefer a non-solid cover because its breathable HDPE avoids pooling and reduces strain on attachment hardware.

Those who need a fully waterproof canopy, an exact industrial rectangle, or a rigid structure should look elsewhere; this model is explicitly water permeable and customers report occasional size variation from manual measurement, so precise architectural applications may require a different product or custom ordering with careful measuring.

Pros & Cons

Pros

• High UPF sun protection and measurable cooling effect for outdoor living spaces.
• Durable materials: woven HDPE fabric with stainless steel D rings and heavy duty webbing for long outdoor life.
• Breathable, water-permeable design prevents water pooling and performs well in wind and rain.
• Custom sizing and multiple colors let you match style and fit to the space.

Cons

• Not waterproof, so it will not keep everything dry beneath it during heavy rain.
• Some customers report size or shape variation, so careful measurement is required for exact fits.

Specifications

Brand	ShadeMart
Model size	11' x 13' (rectangle)
Material	Woven HDPE (High Density Polyethylene)
UV protection	Blocks up to 95% of UV rays (UPF50)
Water resistance	Water permeable / not waterproof
Attachment	Stainless steel D rings on heavy duty webbing
Use cases	Patio, carport, pergola, pool, yard, window

Our Verdict

The ShadeMart 11' x 13' Blue Shade Sail is a practical, cost-effective choice for anyone who needs strong UV protection and improved outdoor comfort without creating a solid roof. Its durable HDPE fabric and stainless steel fittings make it a good long-term option for patios, pools, and carports, while the breathable, water-permeable design prevents pooling. Buyers should measure carefully and accept that it is not intended as a waterproof solution, but for sun control it offers solid value.

Frequently Asked Questions

Is this shade sail waterproof?
No, the sail is water permeable and allows rain to pass through; it is designed for shade and ventilation rather than waterproof coverage.

Will it reduce temperature under the sail?
Yes, customers report noticeable cooling; the woven HDPE can lower perceived temperature by roughly 10 to 15 degrees in shaded areas.

Can it be attached to trees, poles, or walls?
Yes, with appropriate hardware kits the sail can be mounted to poles, trees, walls, roofs, and similar structures.