ShadeMart 6 ft x 21 ft Beige Sun Shade Sail UPF50 Rectangle - Heavy

In this review the ShadeMart 6 ft x 21 ft beige rectangle shade sail is evaluated for homeowners and small business owners who want a durable, breathable canopy that cuts heat and UV without being fully waterproof. The bottom line: it is best for patios, carports, pergolas and poolside spots where sun and airflow control matter most, because the woven HDPE cloth provides strong sun protection (up to 95% UV block) while remaining water permeable and breathable so rain does not pool on the fabric.

Key Features

• MATERIAL: Woven HDPE fabric resists fading and gives a strong, lightweight panel that holds shape in normal outdoor use.
• Corner hardware: Stainless steel D rings attached to heavy duty white webbing provide secure anchor points for tensioning and long-term durability.
• Breathability: The water permeable construction lets water and air pass through so the sail does not trap moisture or form puddles after rain.
• UV protection: Blocks up to 95% of harmful UV rays, which noticeably reduces temperature beneath the sail by about 10 to 15 degrees in direct sun.
• Custom sizing: Multiple custom sizes are available so buyers can match irregular spaces if they measure carefully before ordering.
• Styling: Rectangle shape and neutral beige color act as a subtle decorative element that integrates with many outdoor decors.

Who It's For

The ShadeMart rectangle sail is aimed at homeowners, renters with outdoor living areas, and small commercial venues that need a heavy duty shade fabric to lower sun exposure while preserving airflow. It suits patios, carports, pergolas, pool decks and yard gatherings where a breathable canopy is preferred to a solid waterproof roof.

It is not the right choice for buyers who need a fully waterproof cover or strict geometric precision without allowance for manual measurement variance; customers who require a sealed rainproof shelter should look to dedicated canopies or tarps designed for waterproofing.

Pros & Cons

Pros

• High UPF performance blocks most UV and reduces under-sail temperatures for comfort.
• Stainless steel D rings and heavy webbing make attachment and tensioning straightforward and durable.
• Water permeable fabric prevents pooling and promotes airflow, reducing wind load and moisture build-up.
• Custom sizes and neutral styling allow versatile placement across patios, carports, and poolsides.

Cons

• Not waterproof, so it will not keep rain out during heavy storms.
• Some buyers report variation in shape and size due to manual measurements, so careful measuring is required.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	6 ft x 21 ft
Material	Woven HDPE (high density polyethylene)
Hardware	Stainless steel D rings on heavy white webbing
Function	Water permeable, breathable, UV resistant (blocks up to 95%)

Our Verdict

The ShadeMart 6 ft x 21 ft beige rectangle sail is a practical, value-oriented choice for those who want reliable sun protection and airflow rather than a waterproof awning. Its HDPE fabric, stainless hardware and customization options make it a durable solution for patios, carports and pool areas, provided buyers accept that it will allow rain through and may require careful measuring before ordering.

Frequently Asked Questions

Is this shade sail waterproof?
Answer. No, the fabric is water permeable and breathable so it will let water pass through rather than provide a waterproof cover.

How much UV does it block?
Answer. The woven HDPE construction blocks up to about 95% of harmful UV rays, reducing temperature beneath the sail by roughly 10 to 15 degrees in direct sun.

Can I mount it to trees or poles?
Answer. Yes, with appropriate hardware kits the sail can be attached to poles, trees, walls or roofs; robust anchor points are recommended for tensioning.