Custom Size 17x21 ft Sun Shade Cloth with Grommets - 95% UV Protection

Our review of this custom size 17x21 ft sun shade cloth finds it best for homeowners and DIYers who need a durable, high-coverage shade for a pergola, patio or carport. The single biggest reason to consider this shade is its reinforced construction and 95% UV protection, which together deliver long-lasting sun blockage while still allowing airflow; the fabric breathes, sheds water drops and can be mounted without power tools. For anyone wanting a large, tailored cover that balances sun defense with ventilation, this is a practical choice.

Key Features

• Durable HDPE fabric: The high density polyethylene knit resists tearing and fraying for longer outdoor use.
• Reinforced edges and grommets: Double-stitched hems and copper grommets every 2 ft help distribute tension and simplify mounting.
• 95% UV protection: Blocks the vast majority of sunlight to keep covered areas noticeably cooler on hot days.
• Breathable design: The knit construction allows airflow so the covered space stays ventilated rather than trapping heat.
• Easy installation: Includes zip ties or ropes so the cover can be fastened without additional tools.
• Custom sizing available: Options for custom sizes and colors let buyers match their specific patio or pergola dimensions.

Who It's For

This shade cloth is aimed at homeowners, renters with removable exterior fixtures, and small business owners who need a sizable, durable sun cover for a pergola, patio, porch or carport. It is particularly useful for those who value breathability as well as sun blockage and who want a product that comes ready to install with ties or ropes.

Those who need a rigid, waterproof canopy or a permanently mounted awning should look elsewhere, because this fabric is breathable and designed to let water droplets through rather than act as a rainproof barrier. Also, buyers who lack any basic fastening points may need professional help to create suitable anchor locations.

Pros & Cons

Pros

• High density polyethylene material provides solid durability for outdoor use.
• The double-sewn edges and copper grommets make hanging and tensioning the cloth straightforward.
• Provides substantial 95% UV protection while maintaining airflow and cooling.
• Custom sizes and included fastening accessories add value and flexibility.

Cons

• Because the fabric is breathable, it is not fully waterproof and will let water drops through.
• A few users report grommet tearing under heavy strain, so careful tensioning is required.

Specifications

Product Type	Sun shade cloth / pergola cover
Size	Custom, example 17 ft x 21 ft
Material	High density polyethylene (HDPE)
UV Protection	Approx. 95%
Edges	Double-sewn hem with reinforced copper grommets
Included Accessories	Zip ties or ropes for installation

Our Verdict

This custom 17x21 ft sun shade cloth is a practical, cost-effective option for shading patios and pergolas because it pairs strong durability with excellent sun blockage and easy installation. It is good value for anyone who needs large-area coverage and prefers a breathable fabric; just avoid expecting full waterproofing and take care not to over-tension the grommets.

Frequently Asked Questions

Will the shade block most sunlight?
The fabric provides around 95% UV protection, so it blocks the majority of direct sunlight while allowing air flow.

Is this shade waterproof?
No, the knit HDPE is breathable and will let water drops through rather than acting as a fully waterproof canopy.

What comes with the shade for installation?
The package includes zip ties or ropes and the reinforced hems with copper grommets to make mounting straightforward without extra tools.