ShadeMart 17ft x 20ft Turquoise Rectangle Sun Shade Sail - UPF50

In this review the ShadeMart 17' x 20' Turquoise Rectangle Sun Shade Sail is evaluated for homeowners and outdoor hosts who want durable, breathable sun protection without a full pergola. The bottom line: its woven HDPE fabric and stainless steel corner D rings deliver reliable shade and durability, cutting sunlight and heat while remaining water permeable. For patios, carports and poolside areas this sail provides substantial coverage and a cooler space, though it is not a waterproof canopy.

Key Features

• Woven HDPE fabric: The high density polyethylene construction blocks up to 95% of harmful UV rays while remaining breathable to reduce temperature under the sail.
• Stainless steel D rings: Heavy duty metal corners attached to white webbing give secure anchor points that resist corrosion in outdoor conditions.
• Water and air permeable: The sail allows rain and airflow to pass through, reducing wind load and preventing ponding on the fabric despite not being waterproof.
• Large coverage: At approximately 17 ft by 20 ft the rectangle shape provides substantial shade for patios, carports, pools or large seating areas.
• Custom sizing available: The brand offers tailored sizes so installers can match odd dimensions, provided accurate measurements are given before purchase.

Who It's For

The ShadeMart rectangle sail is ideal for homeowners, renters and small business owners who want an economical way to cool outdoor spaces and block sun exposure without a permanent structure. It works well when attached to poles, walls, trees or roof anchors with the proper hardware kit.

Those who need a fully waterproof shelter or require an ultra-fitted architectural installation should look elsewhere; this style is specifically a breathable, UV-resistant shade fabric designed to lower temperatures rather than keep water out.

Pros & Cons

Pros

• High UV protection and noticeable cooling under the sail from the woven HDPE material.
• Durable construction with stainless steel D rings and heavy duty webbing for secure installs.
• Easy to install for most DIYers and flexible in attachment options to poles, trees or walls.
• Good value for the coverage it provides, with customers reporting strong durability even in windy conditions.

Cons

• Not waterproof, so it will not keep an area dry in heavy rain.
• Size can vary due to manual measurements, so careful measuring is required before ordering a custom size.

Specifications

Brand	ShadeMart
Shape	Rectangle
Approximate Size	17 ft x 20 ft
Material	Woven HDPE (High Density Polyethylene)
Corner Hardware	Stainless steel D rings on heavy duty white webbing
Functionality	Water permeable, breathable, UPF50 (blocks up to 95% UV)
Custom Options	Custom sizes available; measure venue accurately

Our Verdict

The ShadeMart 17' x 20' Turquoise rectangle shade sail is a practical, cost-effective choice for anyone seeking broad, breathable sun protection that also reduces temperature. It is particularly good for patios, carports and poolside areas where water permeability and wind performance matter, and it represents solid value for the construction quality and coverage it provides.

Frequently Asked Questions

Is this sail waterproof?
No. This style is water permeable and breathable, so it will not keep an area dry in heavy rain.

Can it be attached to trees or poles?
Yes. With proper hardware kits the sail can be anchored to poles, trees, walls, roofs and other sturdy points.

Will it block UV and lower temperature?
Yes. The HDPE fabric blocks up to 95% of UV rays and customers report noticeable cooling under the sail.