ShadeMart 13ft x 18ft Blue Waterproof Shade Sail - High UV Blockage

In this review the ShadeMart 13' x 18' Blue Waterproof Shade Sail is evaluated for backyard patios, carports and garden shelters where sun protection and light rain resistance are priorities. The single biggest reason to consider it is the fabric: a polyester weave with PU waterproof coating that blocks up to 95% of harmful UV while still remaining relatively easy to install and remove. It is best suited for users who want a simple canopy alternative to umbrellas or pergolas and who understand limits around heavy storms and water pooling.

Key Features

• Waterproof fabric: Polyester with a PU coating prevents most light rain from passing through so the covered area stays drier than with a standard cloth shade.
• High UV protection: The sail blocks up to 95% of harmful UV, which helps reduce surface temperatures beneath it by as much as 15 degrees compared with no shade.
• Reinforced edges: Curved edges and dual-layer white webbing under the fabric increase durability at stress points and reduce tearing risk.
• Stainless steel D rings: Heavy-duty corner D rings are sewn into the dual webbing, providing reliable attachment points for tensioned installation.
• Custom size option: ShadeMart offers customized sizes with a typical two business day turnaround for orders that need nonstandard dimensions.
• Lightweight and removable: The canopy serves as a compact, portable alternative to permanent structures and can be uninstalled as needed.

Who It's For

The ShadeMart 13' x 18' sail is ideal for homeowners with a patio, small carport or backyard seating area who want strong sun protection and occasional shelter from light rain. It fits customers who value ease of installation and a product that can be stored or repositioned seasonally.

It is less suitable for people who need a permanent waterproof roof in heavy-weather regions or who expect the sail to handle prolonged storms; the fabric resists light rain but can accumulate water if not tensioned correctly, so those seeking a rigid canopy should look elsewhere.

Pros & Cons

Pros

• Good build quality with strong stitching and reinforced corners that customers noted as durable.
• Effective sun blocking that noticeably reduces temperature under the sail.
• Value for money: a reasonably priced canopy alternative that is compact and simple to store.
• Easy to install when paired with the proper hardware kit, with clear tensioning benefits.

Cons

• Not fully stormproof: the sail can tear or accumulate water in heavy wind or rain if tension is inadequate.
• Size and color perceptions vary among buyers, so double-check measurements and expect slight differences in shade tone.

Specifications

Product name	13' x 18' Blue Waterproof Shade Sail
Material	Polyester fabric with PU waterproof coating
UV protection	Up to 95% UV blockage
Edge finish	Curved edges with dual-layer white webbing
Attachment	Stainless steel D rings at corners
Installation	Requires high tension; installation kit not included
Customization	Custom sizes available; usually ships in 2 business days

Our Verdict

The ShadeMart 13' x 18' Blue Waterproof Shade Sail is a practical, cost-effective option for anyone wanting strong sun protection and light rain resistance for patios, gardens or carports. It offers good build quality and effective temperature reduction for the price, but buyers should install it with proper tension and optional hardware to avoid water pooling or damage in severe weather.

Frequently Asked Questions

Is this sail fully waterproof?
It is made with a PU-coated polyester that resists light rain, but it is not intended as a rigid roof for heavy storms and can collect water if not tensioned properly.

Does the sail include installation hardware?
The sail does not include an installation kit; ShadeMart recommends using their hardware kit for simple and secure mounting.

Can I get a custom size?
Yes, custom sizes are available and typically take around two business days to process before shipping.