ShadeMart 14ft x 21ft Green Sun Shade Sail Rectangle - Breathable UV

Our review of the ShadeMart 14' x 21' green rectangle sun shade sail finds it best for homeowners and small businesses who want a durable, breathable canopy that cuts solar heat and protects outdoor areas. The biggest reason to buy is its combination of woven HDPE fabric and reinforced stainless steel D rings, which deliver strong, long-lasting shade while remaining water permeable so rain and breeze pass through. Installation is straightforward with basic hardware, and the cloth noticeably lowers surface temperatures on patios and carports.

Key Features

• Woven HDPE fabric: provides a tight, durable weave that blocks up to 95% of harmful UV rays while remaining breathable.
• Stainless steel D rings: attached to heavy duty white webbing for secure anchor points that resist corrosion and tearing.
• Water permeable design: allows rain and air to pass through so water does not pool and wind loads are reduced.
• Custom size options: a range of sizes are available so buyers can choose a sail tailored to patios, carports, pergolas, or pool areas.
• Temperature reduction: the canopy cuts sunlight and can lower patio surface temperatures noticeably, improving comfort on hot days.

Who It's For

The ShadeMart rectangle shade sail is ideal for homeowners with patios, pools, carports, pergolas, or yards who want an affordable way to reduce sun exposure and cool outdoor surfaces. It suits DIY installers and landscapers who will use poles, walls, or trees as anchor points and who appreciate a breathable fabric that prevents water pooling.

Those who need a fully waterproof canopy, or who require rigid structure or integrated hardware included with purchase, should look elsewhere; this style is explicitly water permeable and sold primarily as the fabric sail itself, with customers expected to select appropriate mounting hardware.

Pros & Cons

Pros

• High build quality with strong stitching and reinforced corner loops for secure mounting.
• Effective shade and UV blocking that reduces temperatures on shaded surfaces.
• Easy to install for most users and offers good value for the fabric and hardware strength.

Cons

• Not waterproof, so it will not shelter from heavy rain and is intended to be water permeable.
• Some buyers report size variations, so careful measurement is required before ordering.

Specifications

Our Verdict

The ShadeMart 14' x 21' rectangle shade sail is a practical, value-oriented choice for anyone wanting breathable UV protection over patios, pools, or carports. With durable woven HDPE and reinforced corners it performs reliably when mounted correctly, though buyers should measure carefully and not expect waterproof coverage. It is well suited to DIY installation and delivers noticeable temperature and sun-blocking benefits for the price.

Frequently Asked Questions

Is this shade sail waterproof?
No, the fabric is water permeable by design so water will pass through rather than pool on the canopy.

What hardware is needed to install it?
Installation requires appropriate anchor points such as poles, walls, or trees and a suitable hardware kit; the sail includes reinforced D rings but not a full mounting kit.

Will it block UV and reduce heat?
Yes, the woven HDPE material blocks up to 95% of harmful UV rays and helps lower surface temperatures under the sail.