90% 12x20ft Sun Shade Cloth for Patio and Pergola - Heat Reduction

In this review the 90% 12x20ft sun shade cloth is evaluated for homeowners and DIYers who need reliable sun protection for outdoor spaces. The bottom line: it is a simple, cost-effective way to cut sun exposure and reduce heat on decks, patios, pergolas and carports while adding privacy. The reviewer found the cloth's primary strength is blocking up to 90% of harmful UV rays and its breathable fabric keeps the area cooler without trapping moisture, making it a practical choice for everyday backyard use.

Key Features

• High UV protection: Blocks up to 90% of harmful UV rays to reduce sun damage to people and furniture.
• 185 GSM HDPE construction: Durable, fade-resistant and tear-resistant material stands up to weather and regular outdoor use.
• Breathable design: Allows airflow and water drainage so shaded areas stay cooler and do not trap moisture.
• Reinforced brass grommets: Rust-resistant grommets spaced 20 in apart provide secure attachment points and reduce the chance of tearing.
• Low maintenance: Waterproof and dustproof surface wipes clean or rinses easily with a hose for simple upkeep.
• Versatile use: Sized for 12x20 ft installations on pergolas, patios, carports, gardens and temporary camping covers.

Who It's For

This shade cloth is aimed at homeowners, renters with outdoor terraces, and gardeners who want an affordable way to cut sun and heat across medium to large areas. It suits anyone installing a permanent or semi-permanent cover on a pergola, fence, balcony or carport where UV protection and airflow are priorities.

It is less appropriate for those seeking total waterproof roofing or a fully blackout fabric; the breathable weave allows water through and provides ventilation rather than complete rain protection. Users wanting a decorative, heavy-duty awning with integrated hardware may prefer a custom-built cover instead.

Pros & Cons

Pros

• Blocks up to 90% of UV, noticeably reducing direct sunlight and heat buildup in shaded zones.
• 185 GSM HDPE fabric resists fading and tearing, offering long-term outdoor durability.
• Brass, rust-resistant grommets spaced 20 in apart make installation straightforward and secure.
• Easy to clean and maintain; hose down or wipe to remove dust and debris.

Cons

• Some customers report mixed durability experiences over very long-term use, so heavy abrasion or extreme conditions may shorten lifespan.
• The breathable weave lets water through, so it is not a full rainproof roof for runoff management.

Specifications

Shade Rating	Blocks up to 90% of UV rays
Size	12 ft x 20 ft
Material	185 GSM high-density polyethylene (HDPE)
Grommet Type	Reinforced, rust-resistant brass grommets
Grommet Spacing	Approximately 20 in apart
Properties	Breathable, fade-resistant, tear-resistant, moisture-resistant

Our Verdict

The 90% 12x20ft sun shade cloth is a practical, value-forward option for reducing sun and heat across patios, pergolas and decks. It offers strong UV protection, straightforward installation with reinforced grommets and low maintenance, making it a good buy for homeowners who want effective shading without a custom awning. Those needing complete rainproofing or the highest long-term abrasion resistance should consider more heavy-duty roofing alternatives.

Frequently Asked Questions

Will this block most of the sun?
Yes, the fabric blocks up to 90% of harmful UV rays and significantly reduces direct sunlight and heat in the shaded area.

Is it waterproof?
No, the cloth is breathable and allows water to pass through, so it is not designed as a fully waterproof roof.

How is it installed?
Installation uses the reinforced, rust-resistant brass grommets spaced about 20 in apart; it can be tied or secured to pergola beams, railings or fence posts without special tools.