20x21 ft Sun Shade Cloth with Grommets - 95% UV Patio Cover

In this review the 20x21 ft sun shade cloth is examined for homeowners and outdoor DIYers who need a durable, breathable cover for patios, pergolas and carports. The bottom line: this large, customized sun shade delivers strong sunblocking power with practical installation features, making it a sensible choice if you want 95% UV protection and a fabric that sheds water while allowing air flow. The review focuses on durability, ease of setup and real-world use to help decide if it fits a specific outdoor spot.

Key Features

• Durable material: High density polyethylene knit construction resists tearing and fraying for extended outdoor use.
• Reinforced edges: Double-sewn hems and a double-layer edge reduce stress points and keep the fabric from unraveling.
• Grommets every 2 ft: Copper grommets set in the hem make anchoring straightforward and help distribute tension when mounted.
• 95% UV protection: The fabric blocks most sunlight while still allowing air to pass through so shaded areas stay cooler.
• Easy installation: Zip ties and ropes are included so the shade can be fastened without special tools.
• Custom sizing available: The option to order custom sizes and colors is helpful for nonstandard pergolas or irregular outdoor layouts.

Who It's For

This is a good pick for homeowners, renters with outdoor space and small business operators who need a large, affordable way to shade a patio, pergola, porch or carport. The fabric suits people who want high UV blockage but still want airflow and occasional rain to pass through rather than pool on a solid canopy.

It is less suitable for those needing a fully waterproof cover or a rigid structure-integrated roof; if you require total water protection or a permanent architectural solution, consider a solid canopy or hard pergola roof instead.

Pros & Cons

Pros

• Effective 95% UV shading keeps covered areas noticeably cooler.
• Heavy-duty HDPE knit and double-sewn edges improve long-term durability.
• Included zip ties and ropes make setup quick without extra purchases.
• Custom size and color options let buyers match specific spaces.

Cons

• Some customers report grommets can stress or tear during rough setup, so care is needed when tightening.
• Not fully waterproof-water will pass through the fabric rather than bead off.

Specifications

Our Verdict

The 20x21 ft sun shade cloth is a practical, cost-effective option for anyone who needs strong UV protection with good airflow and a simple install. It represents good value for patios, pergolas and carports where full waterproofing is not required, and the reinforced edges plus grommet layout make it suitable for long-term outdoor use if installed carefully.

Frequently Asked Questions

Will this shade block most of the sun?
The fabric provides about 95% UV protection, so it blocks the majority of direct sunlight while allowing air to circulate.

Is the cover waterproof?
No; the shade allows water to drip through rather than forming a waterproof barrier, so it is best for sun protection rather than rain protection.

Are installation accessories included?
Yes; zip ties and ropes are included to fasten the shade to a structure without additional tools.