ShadeMart 6 ft x 18 ft White Rectangle Sun Shade Sail - UPF50

In this review the ShadeMart 6 ft x 18 ft white rectangle sun shade sail is examined for homeowners and small-business outdoor spaces who need reliable sun protection without sealing out rain. The bottom line: this woven HDPE fabric sail blocks up to 95% of harmful UV rays and noticeably lowers surface temperatures, making it a sensible buy for patios, carports, pergolas and poolside areas where airflow and breathability matter most.

Key Features

• Material: Woven HDPE cloth resists fading and provides a durable, lightweight fabric that stands up to sun exposure.
• UV protection: Rated UPF50 and advertised to block up to 95% of UV rays, it reduces temperature and sun damage to shaded areas.
• Breathability: Water permeable design lets water and air pass through, preventing pooled water and improving comfort on warm days.
• Hardware ready: Stainless steel D rings attached to heavy white webbing make the sail compatible with common attachment kits and secure mounting points.
• Custom sizing: Available in multiple sizes and custom options so it can be tailored to specific patios, carports or other irregular outdoor venues.

Who It's For

The ShadeMart rectangle sail suits homeowners, landscapers and small businesses that need durable sun protection for outdoor seating, play areas or vehicle covers and appreciate a breathable, nonwaterproof canopy. It is especially useful where airflow matters, such as over patios or pool decks, and where a reduction in local temperature is desired.

Those who need a fully waterproof canopy, a perfectly rigid rectangular panel, or very precise factory-cut dimensions for architectural installations should consider alternative weatherproof systems or hard-canopy solutions. Buyers should also measure carefully since sizes are offered in custom cuts and manual measurements can vary.

Pros & Cons

Pros

• Effective sun protection with UPF50-level performance and claimed 95% UV blockage.
• Durable woven HDPE resists fading and held up well in customer reports after severe weather.
• Water permeable design avoids pooling and keeps shaded areas ventilated and cooler.

Cons

• Not waterproof, so it will not keep heavy rain off a seating area.
• Some customers reported size or shape variation from manual measurements, so exact rectangle geometry can vary.

Specifications

Our Verdict

The ShadeMart 6 ft x 18 ft white rectangle sail is a practical choice for anyone who wants strong UV protection and airflow rather than a waterproof canopy. It delivers durable woven fabric, easy attachment points and measurable cooling benefits, offering good value where breathability and sun blocking are the priorities.

Frequently Asked Questions

Is this sail waterproof?
No. The fabric is water permeable and designed to allow water to pass through rather than act as a waterproof canopy.

Can it be attached to posts, walls or trees?
Yes. The sail has stainless steel D rings and heavy webbing so it can be used with appropriate hardware to attach to poles, walls, trees or roofs.

Will it reduce temperature under the sail?
Yes. The woven HDPE material and UV blocking properties lower temperatures in shaded areas, with customers noting noticeable cooling effects.