ShadeMart 18ft x 19ft White Sun Shade Sail Rectangle - Breathable

Our review of the ShadeMart 18' x 19' white sun shade sail finds it best suited for homeowners and small businesses who need broad, breathable sun protection over patios, carports, or pool areas. The single biggest reason to buy is the fabric: a woven HDPE canopy that blocks up to 95% of UV while remaining water permeable and airflow friendly, so it cools spaces noticeably without trapping moisture. Installation requires basic hardware and measuring care, but the result is a durable, low-maintenance shade that performs well in everyday outdoor conditions.

Key Features

• Woven HDPE fabric: provides robust UV protection and long-term durability while allowing air to pass through for cooler shade.
• Stainless steel corner D rings: attach to heavy duty webbing for secure anchor points that resist corrosion and everyday wear.
• Water permeable design: allows rain to filter through so water does not pool on the canopy and drainage concerns are minimized.
• Custom size option: a range of sizes is available so you can order closer to your actual installation space when measured carefully.
• Rectangle styling: a clean geometric shape that integrates with patios, pergolas, and carports while acting as a decorative element.

Who It's For

The ShadeMart 18' x 19' sail is ideal for homeowners with medium to large outdoor areas who want UV protection and better airflow than a solid tarp. It is a good pick for patios, poolside lounges, driveways used as carports, and pergolas where cooling and sun blocking are priorities.

Those who need a fully waterproof cover or precise factory-cut perfection should look elsewhere; this style is intentionally water permeable and sizes can vary slightly because of manual measurement during production, so accurate on-site measuring is important before purchase.

Pros & Cons

Pros

• High UV blockage keeps shaded areas significantly cooler and protects surfaces and skin.
• Durable construction with stainless steel D rings and heavy webbing for reliable anchor points.
• Permeable weave reduces water pooling and improves airflow compared with solid waterproof covers.

Cons

• Not waterproof, so it will not keep an area fully dry during rain.
• Size may vary slightly due to manual measurement, so precise measuring is required before ordering.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	18' x 19'
Material	Woven HDPE (High Density Polyethylene)
UV Protection	UPF50; blocks up to 95% of UV rays
Corner Hardware	Stainless steel D rings on heavy duty webbing
Water Resistance	Water permeable, not waterproof

Our Verdict

The ShadeMart 18' x 19' white rectangle shade sail is a practical, value-oriented choice for anyone wanting breathable, high-UV protection over patios and carports. It delivers durable construction and effective cooling for outdoor living spaces, but buyers should measure carefully and accept that the fabric is not intended to be a waterproof shelter.

Frequently Asked Questions

Is this shade sail waterproof?
The fabric is water permeable and breathable, so it will not keep an area fully dry but prevents water pooling.

What hardware is needed to install it?
Installations use anchor points like poles, trees, or walls with turnbuckles, pad eyes, or other hardware attached to the stainless steel D rings; a proper hardware kit is recommended.

Can I order a custom size?
Yes, ShadeMart offers custom sizes but you should measure your installation area accurately before ordering because manual measurements can cause slight variations.