ShadeMart 13 ft x 17 ft Grey Sun Shade Sail UPF50 Rectangle

In this review the ShadeMart 13 ft x 17 ft Grey Sun Shade Sail is assessed for homeowners and outdoor hosts who need a large, durable canopy that reduces heat and sun exposure. The bottom line: it is a heavy-duty woven HDPE rectangle that blocks up to 95% of UV rays while remaining water permeable and breathable, making it ideal for patios, carports, pergolas and pool areas where airflow and sun protection matter most.

Key Features

• Material: Woven HDPE fabric delivers a durable, tear-resistant surface that stands up to regular outdoor use.
• UV protection: Rated UPF50 and advertised to block up to 95% of harmful UV rays, which helps lower temperatures underneath by roughly 10 to 15 degrees.
• Breathable design: The water permeable fabric allows rain and air to pass through, avoiding ponding and improving comfort on warm days.
• Hardware ready: Stainless steel corner D rings attached to heavy duty webbing make it straightforward to tension and secure to poles, trees or wall anchors with the proper kit.
• Custom sizing: Available in multiple sizes and custom options so you can match a specific patio or carport footprint when you measure carefully.

Who It's For

The ShadeMart rectangle sail is best for homeowners, renters with outdoor space, and people who want a cost-effective way to add large-area shade that still allows airflow and rain to pass through. It suits patios, pergolas, carports and poolside areas where reducing UV exposure and lowering surface temperatures are priorities.

It is less suitable for those who need a fully waterproof canopy or an exact precision-cut architectural shade where perfectly square corners are critical; customers should measure carefully and expect small variations from manual measurement and fabric stretch.

Pros & Cons

Pros

• High UV blocking with UPF50-rated woven HDPE that meaningfully reduces heat in shaded areas.
• Durable construction with stainless steel D rings and heavy duty white webbing for secure attachments.
• Breathable, water permeable fabric prevents runoff buildup and performs well in wind and rain without holding water.
• Easy to install with common hardware kits and adaptable to many mounting points like poles, trees, or walls.

Cons

• Not waterproof, so it will not keep an area dry during heavy rain.
• Size and shape can vary slightly due to manual measurement, which may require careful planning before purchase.

Specifications

Our Verdict

The ShadeMart 13 ft x 17 ft rectangle shade sail is a practical, value-oriented option for anyone wanting reliable sun protection and airflow for patios, carports, or pool areas. Its durable HDPE fabric, stainless steel fittings and UPF50 performance make it a good long-term choice when waterproofing is not required; buy it if you need large-area shade and can accommodate slight size variation with careful measuring.

Frequently Asked Questions

Is this shade sail waterproof?
No. The fabric is water permeable and breathable, so it will allow rain to pass through rather than shed it.

Can I cut the fabric to a custom size?
ShadeMart offers custom sizes, but customers should order the size rather than cutting standard sails, and measure the venue accurately before purchase.

Will it reduce temperature under the sail?
Yes. The woven HDPE and UPF50 protection are specified to reduce temperatures underneath by about 10 to 15 degrees in many conditions.