20ft x 20ft Brown Super Ultra Heavy Duty Tarp 20 Mil - Waterproof

In this review of the 20' x 20' Brown Super Ultra Heavy Duty Tarp the bottom line is simple: this tarp is for anyone who needs a heavy, reliable weather barrier and values material strength over lightweight convenience. For outdoor covers, job sites, trucks or camping shelters it stands out because of its 20 mil thickness and reinforced construction, which deliver a tangible feeling of durability and waterproof protection that many thinner tarps lack.

Key Features

• 20 mil thickness: Provides a noticeably thicker, more tearresistant barrier than common tarps, improving longevity against abrasion and punctures.
• Waterproof polyethylene: Keeps moisture, dampness, and condensation away from covered items so tools, firewood, and gear stay dry.
• Reinforced corners and perimeter rope: Sewn border piping and an outer rope improve tiedown strength and reduce tearing at stress points.
• Tight 16x16 weave: Enhances rip resistance and overall tensile strength for heavyduty outdoor use.
• Rustresistant grommets: Grommets set every 2 ft (noted in marketing and 36 in in some specs) allow secure anchoring and reduce corrosion where tiedowns are used.
• UV protection: Treated to resist sunlight degradation so the tarp can be used seasonally without quick breakdown from UV exposure.

Who It's For

This tarp suits homeowners, contractors, and outdoor enthusiasts who need a tough, longlasting cover for vehicles, roofs, boats, RVs, firewood stacks, or construction materials. Its heavy 20 mil build and reinforced edges make it appropriate when strength and waterproofing are primary concerns rather than light packability.

Those seeking an ultralight camping footprint or frequent, compact backpacking gear should look elsewhere; the weight and stiffness that give this tarp strength also make it less convenient for minimalweight trips or situations requiring frequent folding and stowing.

Pros & Cons

Pros

• Excellent waterproofing from 100% polyethylene construction keeps covered items dry.
• Reinforced corners, perimeter rope, and tight weave reduce tearing and stress failures.
• UV resistance and heavy gauge material extend usable life in sun and bad weather.
• Multiple grommets provide secure tiedown points for varied applications.

Cons

• Heavier and less packable than thinner tarps, making it cumbersome for ultralight camping.
• Some users report mixed longevity in extreme use-sturdy but not indestructible under continual heavy stress.

Specifications

Size	20 ft x 20 ft
Material	100% polyethylene
Thickness	20 mil
Weave	16 x 16 tight weave
Grommet spacing	Every 2 ft (marketing notes also reference 36 in)
Edge reinforcement	Sewn perimeter rope and border piping
Finish	Waterproof and UVprotected

Our Verdict

The 20' x 20' 20 mil tarp is a practical choice for users who need a stout, weatherproof cover that prioritizes durability and waterproofing over light weight. It delivers clear value for protecting vehicles, job site materials, and outdoor equipment thanks to its thick polyethylene, reinforced corners, and UV protection, though those wanting ultralight portability should consider thinner alternatives.

Frequently Asked Questions

Is this tarp fully waterproof?
Yes, the tarp is made from 100% polyethylene and marketed as 100% waterproof, designed to shed moisture and prevent dampness.

How often are grommets placed along the edge?
Grommets are reinforced and placed for regular tiedown points; marketing specifies grommets every 2 ft with references also to 36 in spacing.

Can it withstand long sun exposure?
The tarp includes UV protection to resist sunlight degradation, making it suitable for seasonal outdoor use though extreme, constant exposure will eventually wear any tarp.