ShadeMart 6 ft x 21 ft Grey Rectangle Sun Shade Sail - Breathable UV

In this review the ShadeMart 6 ft x 21 ft Grey Rectangle Sun Shade Sail is assessed for people who need a straightforward, durable way to cool patios, carports and pools without permanent construction; the single biggest reason to buy is the fabrics combination of breathability and high UV protection, which cuts temperatures noticeably while letting water pass through. The reviewer found the sail to be well made, easy to install with the right hardware, and particularly good for covering irregular outdoor equipment where airflow and sun blocking are priorities.

Key Features

• Material: woven HDPE fabric delivers a strong, tear-resistant canopy that stays breathable and holds shape over time.
• UV protection: blocks up to 95% of harmful UV rays, reducing direct sunlight and lowering surface temperatures.
• Water permeability: the sail is water permeable so rain drains through instead of pooling, protecting structure and reducing stress on fixings.
• Sturdy corners: stainless steel D rings attached to heavy duty white webbing provide reliable anchor points for standard hardware kits.
• Custom sizing: available in a range of custom sizes so the area can be matched to patios, carports or pools when measured carefully.

Who It's For

The ShadeMart rectangle sail is best for homeowners, renters and small business owners who want an affordable, nonpermanent shading solution for a patio, pergola, carport or pool equipment area; it suits anyone prioritizing airflow and UV reduction rather than full waterproofing. It also appeals to DIY installers who can attach sails to trees, poles or walls with common hardware kits.

Those who need a completely waterproof canopy or require an opaque, insulated roof should look elsewhere, and buyers must measure installation points accurately because sizes are made to order and manual measurement variances can occur.

Pros & Cons

Pros

• High UV blocking and strong woven HDPE fabric gives effective sun protection and reduces temperatures under the sail.
• Good build quality with reinforced corners and stainless steel D rings that make mounting straightforward.
• Water permeable design avoids ponding and allows airflow, which helps keep covered areas cooler.

Cons

• Not waterproof, so it will not prevent water from passing through during heavy rain.
• Custom sizing requires careful measurement and there can be minor variation from manual measurements.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	6 ft x 21 ft
Material	Woven HDPE (High Density Polyethylene)
Corner hardware	Stainless steel D rings on heavy duty webbing
Functionality	Water permeable, breathable, UV resistant up to 95%

Our Verdict

The ShadeMart 6 ft x 21 ft Grey Rectangle Sun Shade Sail is a practical, cost-effective choice for anyone wanting durable UV protection with airflow and minimal maintenance; it is particularly good value for covering patios, carports or pool equipment where waterproofing is not required. With reinforced corners and breathable HDPE fabric, it performs reliably when measured and mounted correctly.

Frequently Asked Questions

Is this shade sail waterproof?
No, this style is not waterproof; it is water permeable and designed to allow water to pass through.

Can it be attached to trees or poles?
Yes, with the proper hardware kits the sail can be attached to poles, trees, walls or roofs.

How much UV protection does it provide?
It blocks up to 95% of harmful UV rays, which helps lower temperatures under the sail.