ShadeMart 13 ft x 18 ft Grey Rectangle Waterproof Sun Shade Sail

In this review of the ShadeMart 13 ft x 18 ft grey rectangle shade sail, the bottom line is clear: this is a practical, budget-friendly shelter for homeowners who want reliable sun and light rain protection without complex installation. The reviewer found the fabric and reinforced edges provide a sturdy feeling and that the sail noticeably reduces surface temperature on patios or carports. While not intended for severe storms, the waterproof polyester with a PU coating and stainless steel corner D rings make it a useful, everyday shade solution for gardens, decks, and outdoor seating areas.

Key Features

• Waterproof fabric: The polyester material with a PU waterproof coating keeps out light rain so outdoor furniture and seating stay drier during brief showers.
• High UV blockage: The sail is designed to block up to 95% of UV, which helps reduce temperatures on covered surfaces and protects against sun exposure.
• Reinforced edges: Curved edges with dual-layer white webbing increase durability at stress points and reduce the chance of fraying over time.
• Stainless steel corner D rings: Heavy-duty D rings attached to the dual webbing make it easier to tension the sail and secure it to anchors.
• Custom sizing available: ShadeMart offers custom sizes with a typical two business day turnaround for those who need a nonstandard dimension.
• Warranty support: ShadeMart provides return or replacement options if customers are not satisfied, which adds purchase confidence.

Who It's For

This shade sail is a good fit for homeowners or renters who want a cost-effective way to add shade over a patio, seating area, or carport and who expect protection from sun and light rain. It suits DIY installers who can provide their own hardware or choose the recommended ShadeMart hardware kit to maintain the necessary tension for proper performance.

It is less suitable for customers who need a permanent, stormproof canopy or live in areas with heavy snowfall or frequent severe storms, since water accumulation and strong winds can strain the fabric and seams. If you need a rigid, load-bearing structure, consider a solid-frame option instead.

Pros & Cons

Pros

• Good build quality with strong stitching and reinforced corners that hold tension well.
• Effective at reducing surface temperature and blocking a high percentage of UV exposure.
• Waterproof PU coating handles light rain and helps keep the covered area drier than no shade.
• Custom sizes and warranty support provide flexibility and purchase reassurance.

Cons

• Not intended as a stormproof or permanent roof; heavy rain with water pooling or strong winds can cause strain or tearing.
• Installation hardware is not included, so buyers will need to purchase a kit or source anchors separately.

Specifications

Product type	Rectangle sun shade sail
Size	13 ft x 18 ft
Color	Grey
Material	Polyester with PU waterproof coating
UV blockage	Up to 95% blockage
Corner fittings	Stainless steel D rings attached to dual webbing
Custom options	Custom sizes available; usually ships in 2 business days

Our Verdict

The ShadeMart 13 ft x 18 ft grey rectangle shade sail is a solid choice for anyone wanting affordable, effective sun protection and light rain shelter for patios and outdoor living areas. With reinforced edges, stainless steel corner rings, and a waterproof PU coating it offers strong day-to-day performance and good value, provided it is properly tensioned and not exposed to severe weather.

Frequently Asked Questions

Is this sail fully waterproof?
It uses a PU-coated polyester that is waterproof for light rain, but it is not intended to withstand heavy storms or prolonged water pooling.

Does installation hardware come with the sail?
No, the installation kit is not included; ShadeMart recommends using their hardware kit or buying appropriate anchors to ensure proper tension.

Can I order a custom size?
Yes, custom sizes are available and typically processed in about two business days.