Ultra Heavy Duty Tarp Waterproof Large Cover 4ft x 20ft 16 Mil

In this review of the Ultra Heavy Duty Tarp Waterproof Large Cover the bottom line is simple: this is a workhorse tarp for anyone who needs dependable, long-lasting outdoor protection. The reviewer found the 16 mil thickness and reinforced weave deliver real strength and weather resistance, making it suitable for covering boats, trucks, wood piles, and creating temporary canopies. It performs especially well where durability and waterproofing matter most, and its grommet spacing makes it straightforward to secure in wind or rain.

Key Features

• 16 mil thick material: The extra heavy-duty thickness provides strong puncture resistance and a solid barrier against wind-driven debris.
• Waterproof and UV resistant: The laminated backing and UV treatment keep rain and sunlight from degrading covered items over time.
• Grommets every 18 in.: Evenly spaced tie points and corner grommets make it easy to create a secure, tensioned cover or temporary shelter.
• High density woven face: The thick weave offers flexibility while resisting tearing under load and in gusty conditions.
• Multiple practical uses: Designed for boats, RVs, pickup beds, building materials and emergency roof patches, the tarp adapts to many jobs on site or at home.

Who It's For

This tarp is best for homeowners, contractors, and outdoor enthusiasts who need a heavy-duty cover that stands up to extended outdoor exposure. It suits people who store equipment outdoors, wrap lumber, cover pools or create makeshift canopies where durability and waterproofing are priorities.

Those who want a decorative or lightweight camping groundsheet for backpacking may want a lighter option; equally, buyers needing a precise fitted cover for a specific make and model should verify dimensions before purchase rather than assume a custom fit.

Pros & Cons

Pros

• Thick 16 mil construction provides noticeable strength and tear resistance for heavy use.
• Waterproof and UV treated materials keep covered items protected in sun, rain, and snow.
• Grommets every 18 in. make securing and tying down quick and reliable.

Cons

• At 4 ft x 20 ft this is a large, heavier tarp that is less convenient to fold and store than light-duty sheets.

Specifications

Brand	Boen
Size	4 ft x 20 ft
Material thickness	16 mil
Color	Hunter Green
Grommet spacing	Every 18 in. and at each corner
Finish	High density woven face with reinforced laminate backing

Our Verdict

For buyers who need reliable, heavy duty outdoor protection the Ultra Heavy Duty Tarp is a practical, cost-effective choice. Its 16 mil thickness, reinforced laminate backing and frequent grommets deliver utility across construction, transport and yard tasks, offering good value for anyone who prioritizes durability over ultralight portability.

Frequently Asked Questions

Is this tarp waterproof?
Yes, the laminated backing and sealed weave are designed to be waterproof for outdoor coverage.

Can I use it as a temporary roof patch?
Yes, its heavy duty build and grommet tie points make it suitable for emergency temporary roof coverage.

How often are the grommets spaced?
Grommets are placed every 18 in. and at each corner for reliable tie-down options.