ShadeMart 17 ft x 24 ft Blue Sun Shade Sail UPF50 Rectangle

In this review the ShadeMart 17' x 24' Blue Sun Shade Sail is examined for homeowners and outdoor-structure owners who need a large, breathable canopy that blocks sun without trapping heat. The bottom line: this rectangular shade sail is best for patios, carports, pergolas and pool areas where UV protection and airflow matter most, because its woven HDPE fabric is water permeable, blocks up to 95% of harmful UV rays and noticeably reduces temperature underneath while remaining durable enough for semi-permanent outdoor use.

Key Features

• Woven HDPE fabric: Provides durable, breathable coverage that lets water and air pass through while blocking most sunlight for cooler shaded space.
• Stainless steel D rings: Heavy duty corner rings attached to strong white webbing make anchoring the sail to posts or walls straightforward and reliable.
• UPF50 sun protection: Blocks up to 95% of harmful UV rays so furniture, people and stored items get significant sun protection.
• Custom size option: Available in many sizes so the sail can be ordered to match patios, carports or poolside layouts when measured accurately.
• Rectangle styling: A simple geometric shape that integrates with existing outdoor design while serving as a practical shade and decorative element.

Who It's For

The ShadeMart rectangle sail is ideal for homeowners, renters with permission to anchor turns, and small business owners who need affordable, large-area shading over patios, carports, boats or poolside seating. It suits anyone who prioritizes airflow and UV protection rather than full waterproof coverage.

It is less suitable for those who need a fully waterproof roof or a perfectly rigid structure; if you require complete rain protection or a tensioned, permanent roofing system, consider a dedicated waterproof canopy or fixed pergola instead.

Pros & Cons

Pros

• Durable woven HDPE material provides strong fabric quality and long-term resistance to sun exposure.
• Easy to install with stainless steel D rings and heavy duty webbing for secure attachments to poles, walls or trees.
• Permeable design reduces heat under the sail and helps prevent pooling during rain while preserving airflow.

Cons

• Not waterproof, so it will not provide full rain protection during heavy storms.
• Manual measurement may lead to slight size variation, so careful measuring is required before ordering.

Specifications

Our Verdict

The ShadeMart 17' x 24' rectangle shade sail is a sensible value for anyone wanting broad, breathable sun protection that reduces temperature and resists UV damage. It is especially useful for patios, carports and poolside areas where airflow and durability matter; avoid it only if you need complete waterproof coverage or a rigid permanent roof.

Frequently Asked Questions

Is this sail waterproof?
No. The fabric is water permeable and breathable, so it allows water to pass through rather than providing full rain protection.

Can I mount it to trees or posts?
Yes. The stainless steel D rings and heavy duty webbing make it compatible with poles, trees, walls and roofs when used with proper hardware kits.

Will it block sun and reduce heat?
Yes. The woven HDPE fabric blocks up to 95% of UV rays and typically lowers temperatures under the sail by a noticeable amount.