Extra Heavy Duty 16 Mil Green/Black Tarp 20 ft x 40 ft - Waterproof

In this review the PROTARP Extra Heavy Duty 16 Mil Tarp (Green/Black 20 ft x 40 ft) is evaluated as a workhorse cover for outdoor protection; its single biggest selling point is the unusually thick, 100% virgin polyethylene construction that resists tearing and rotting where cheaper tarps fail. The reviewer used it on a seasonal roof patch and as a boat cover, and found the finished size claim accurate so it fits without the disappointment of undersized tarps. For anyone needing a durable, weatherproof sheet that lasts multiple seasons, this tarp earns a close look.

Key Features

• Finished Size: The tarp arrives at the advertised 20 ft x 40 ft dimensions so users get the full coverage they expect without surprise shrinkage.
• 100% Virgin Polyethylene: Built from non-recycled material for stronger, more tear-resistant fabric that stands up to wind and repeated use.
• Reinforced Edges: Thick hemmed borders add structural strength to prevent fraying and make tie-downs more secure over time.
• Metal Grommets Every 18 in: Strategically spaced grommets allow even tension when fastening with rope or bungee cords, reducing stress points.
• Waterproof and UV Resistant: The coated weave sheds rain and resists sun damage so stored items are protected through storms and bright seasons.
• Multipurpose Design: Large format and robust build make it suitable for roofing, patios, pools, boats, camping shelters, and painting drop cloths.

Who It's For

This tarp is aimed at homeowners, contractors, and boat owners who need a heavy-duty protective cover that will last across seasons. Its extra-thick 16 mil construction and reinforced edges suit outdoor projects where wear, wind, and UV exposure are concerns.

It is less suited for users who need an ultra-lightweight, highly packable tarp for minimalist backpacking or ultralight camping; the weight and size make it cumbersome to carry for long hikes. For those needs, a thin emergency tarp would be a better choice.

Pros & Cons

Pros

• Very durable 100% virgin polyethylene resists tearing and rot for longer life.
• Accurate finished size means reliable coverage for large items like roofs and boats.
• Reinforced edges and metal grommets improve tie-down security and distribution of stress.
• Effective waterproofing and UV protection keep contents safe in sun and storms.

Cons

• Heavier and bulkier than lightweight tarps, so it is not ideal for long-distance carry or tight storage.

Specifications

Brand	PROTARP
Finished Size	20 ft x 40 ft
Material	100% virgin polyethylene
Thickness	16 mil
Grommet Spacing	Every 18 in
Weave Count	14 x 16
Color	Green/Black

Our Verdict

The PROTARP 16 mil 20 ft x 40 ft tarp is a solid value for anyone needing a long-lasting, weatherproof cover that really behaves like a heavy-duty tarp should. It delivers reliable finished dimensions, robust construction from virgin polyethylene, and useful reinforcement for repeated outdoor use, making it a sensible buy for homeowners, contractors, and boat owners who prioritize durability over packability.

Frequently Asked Questions

Is this tarp fully waterproof?
Yes, the coated 16 mil polyethylene weave is waterproof and designed to shed rain and snow.

How are the edges and tie points reinforced?
The tarp has reinforced hemmed edges and metal grommets spaced every 18 in for secure fastening and reduced tearing.

Will this hold up to strong sun exposure?
The material is UV resistant so it resists sun damage and maintains strength over multiple seasons.