ShadeMart 18 ft x 23 ft Turquoise Rectangle Sun Shade Sail

In this review the ShadeMart 18' x 23' Turquoise Sun Shade Sail is assessed for homeowners and small businesses who need durable, breathable sun protection for patios and carports; the single biggest reason to buy is its combination of woven HDPE fabric and stainless steel corner D rings that deliver strong, long-lasting UV protection without trapping heat. The reviewer found it especially useful where water permeability and airflow matter, and highlights that the sail blocks up to 95% of harmful UV rays while lowering surface temperatures by a noticeable margin.

Key Features

• Woven HDPE fabric: provides a dense, UV-resistant barrier that reduces sunlight penetration while remaining lightweight and tear resistant.
• Stainless steel D rings: heavy duty corner fittings attached to white webbing give secure anchor points that resist rust and maintain tension.
• Water and air permeable: allows rain and breeze to pass through so it does not pond or trap heat, keeping covered areas cooler and better ventilated.
• UPF50 protection: blocks up to 95% of harmful UV rays, helping lower temperatures under the sail by roughly 10 to 15 degrees and protecting people and surfaces.
• Custom size option: the manufacturer offers a range of custom sizes, which is helpful when fitting irregular patios, carports, or pergolas.
• Rectangle styling: a simple geometric shape that integrates with many outdoor designs and can be combined with multiple colors.

Who It's For

This shade sail is aimed at homeowners, renters with outdoor decks, and small businesses who want a durable, low-maintenance shade solution that still allows airflow and drainage. Its breathable HDPE fabric and rust-resistant fittings suit porches, carports, poolside areas, and pergolas where water permeability and long-term UV protection matter.

People who need a fully waterproof canopy or a tightly sealed rain shelter should look elsewhere, since this style is not waterproof. Also, buyers who want an exact factory-cut inch-perfect fit should measure carefully and consider professional installation, as manual measurement variations can occur.

Pros & Cons

Pros

• High-quality woven HDPE blocks most UV while remaining breathable and lightweight.
• Stainless steel D rings and heavy duty webbing provide reliable attachment points and corrosion resistance.
• Water permeable design prevents ponding and improves airflow under the sail.
• Custom sizing options allow better fit for nonstandard outdoor spaces.

Cons

• Not waterproof, so it will not fully protect from heavy rain or provide a dry shelter beneath.
• Manual measurement variations mean buyers must measure carefully and expect slight size differences.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	18' x 23'
Material	Woven HDPE (High Density Polyethylene)
Corner fittings	Stainless steel D rings with heavy duty white webbing
Functionality	Water and air permeable, UPF50 UV resistant
Custom options	Custom sizes available

Our Verdict

The ShadeMart 18' x 23' Turquoise Shade Sail is a sensible value for anyone who needs durable, breathable UV protection for patios, carports, or pool areas; its woven HDPE fabric and stainless fittings provide long-term durability while allowing airflow and drainage. Choose this sail when UV blocking and ventilation are priorities, and plan measurements and mounting hardware ahead of time for the best result.

Frequently Asked Questions

Is this shade sail waterproof?
It is not waterproof; the woven HDPE fabric is water permeable and designed to let water pass through rather than form a waterproof barrier.

How much UV protection does it provide?
The product blocks up to 95% of harmful UV rays and is rated UPF50, which helps reduce temperatures under the sail.

Can it be attached to trees or poles?
Yes, with the proper hardware kits the sail can be anchored to poles, trees, walls, or roofs using the stainless steel D rings and webbing.