GUARD SHIELD Heavy Duty Black Poly Tarp 20x20 ft - 20mil Thick Cover

In this review of the GUARD SHIELD heavy duty black poly tarp, the bottom line is simple: this tarp is for anyone needing a tough, reusable cover that stands up to sun and weather. The single biggest reason to buy is its 20mil double-sided construction with heat sealed seams, which delivers noticeably more strength and longevity than thin tarps. The reviewer found it well suited for covering patio furniture, vehicles, or creating an emergency shelter, and highlights how the rustproof brass grommets and rope-in-hem make installation and tensioning straightforward.

Key Features

• 20mil thick construction: The heavy 20mil double-sided poly provides robust puncture and tear resistance for prolonged outdoor use.
• Heat sealed seams: Sealed seams keep water out at junctions and help the tarp maintain integrity under stress or wet conditions.
• Rustproof brass grommets every 18 in: Frequent grommets allow secure fastening and even load distribution when tied down.
• Rope-in hem: The reinforced hem with rope improves edge strength and reduces the chance of fraying during heavy use.
• Versatile outdoor protection: Designed for use as a cover for boats, cars, pools, patio furniture, camping shelters, or emergency roof patches.
• Washable and reusable: The tarp is easy to clean and stores compactly for repeated use across seasons.

Who It's For

This tarp is a practical choice for homeowners, landscapers, campers, and vehicle owners who need a durable, weather-resistant cover that can handle sun, rain, and wind. It is especially useful where frequent fastening points are needed and where resistance to tearing and UV exposure matters.

Those who want an ultra-light tarp for backpacking or a decorative cover for short-term indoor use should look elsewhere; this product is designed as a heavy duty, utilitarian protective sheet rather than a lightweight or highly breathable fabric.

Pros & Cons

Pros

• High durability from the 20mil double-sided polyethylene construction that customers describe as long lasting.
• Reliable fastening thanks to rustproof brass grommets every 18 in, which make securing the tarp simple.
• Reinforced edges and heat sealed seams reduce leaks and tearing when used as a shelter or cover.

Cons

• At 20mil thickness, it is heavier and bulkier than thin tarps, so it is less convenient for backpacking or minimal-pack situations.

Specifications

Brand	GUARD SHIELD
Material	Woven and coated polyethylene
Thickness	20mil
Size	20 x 20 ft
Seams	Heat sealed seams
Grommet spacing	Brass grommets every 18 in
Edge reinforcement	Rope-in hem

Our Verdict

The GUARD SHIELD 20 x 20 ft 20mil tarp is a solid value for anyone needing heavy duty, reusable outdoor protection; its thick construction, sealed seams, and frequent grommets make it reliable for covering equipment, vehicles, and creating temporary shelter. It costs more in bulk and weight than thin tarps but delivers clear durability and weather resistance, making it a sensible buy for homeowners, campers, and tradespeople who need a long-lasting cover.

Frequently Asked Questions

Is this tarp waterproof?
Yes, the woven and coated polyethylene with heat sealed seams provides waterproof coverage for general outdoor use.

Are the grommets rustproof?
Yes, the tarp uses rustproof brass grommets spaced every 18 in for secure fastening.

Can it be used as a camping shelter?
Yes, it works well as a wind and rain shelter or emergency roof patch thanks to its thickness and reinforced edges.