CARTMAN 20x40 ft Waterproof Green Tarp - Durable Multipurpose Cover

In this review the CARTMAN Finished Size 20x40 ft tarp is assessed for backyard, jobsite and camping use; its single biggest selling point is the exact finished sizing coupled with reinforced heat-sealed edges, which makes it easy to fit over stacks of wood, equipment, or a temporary shelter without guessing allowances. The reviewer recommends it for shoppers who need a dependable, economical temporary cover that resists rain and dust while offering convenient tie-down points, and notes where the 8 mil thickness places it between light utility and heavy-duty tarps.

Key Features

• Exact finished size: The marked 20x40 ft dimension is the actual finished size so buyers can plan coverage without measuring gaps or overhang guesses.
• Dustproof and waterproof: The polyethylene surface keeps rain, snow and airborne dust off gear and materials during outdoor storage or short-term shelter use.
• Heat-sealed and reinforced edges: Four sides are heat-sealed and folded with internal nylon rope so there are no needle holes that encourage tearing.
• Metal grommets every 36 in: Built-in grommets at regular intervals make it straightforward to secure the tarp to frames, trailers or piles using rope or bungee cords.
• Corner reinforcements: Plastic corner patches increase durability at stress points and make it easier to secure the tarp without ripping the fabric.
• Economical 8 mil thickness: Slightly heavier than the 5 mil option, it balances cost and resilience for temporary outdoor protection.

Who It's For

The CARTMAN 20x40 ft tarp is best for homeowners, contractors and campers who need a large, clearly sized cover for wood piles, equipment, makeshift shelters or livestock protection and prefer the convenience of regular grommets and reinforced corners. Its waterproof and dustproof surface suits seasonal outdoor storage and emergency rain shelter uses.

Those needing a permanent heavy-duty tarp for constant high-wind exposure or long-term UV resistance should consider thicker industrial-grade options; similarly, buyers who require custom-cut sizes or very lightweight backpacking tarps should look elsewhere.

Pros & Cons

Pros

• Exact finished size simplifies planning and eliminates trimming or overlap guesses.
• Good value for the price, offering waterproof protection and solid everyday performance.
• Reinforced heat-sealed edges and internal nylon rope reduce the risk of seam failure.
• Convenient metal grommets every 36 in and corner patches make securing simple and tidy.

Cons

• At 8 mil it is not as rugged as heavy-duty tarps; some customers report tearing under severe stress or prolonged rough use.

Specifications

Brand	CARTMAN
Finished size	20 ft x 40 ft
Thickness	8 mil (economical, temporary protection)
Weather resistance	Dustproof and waterproof
Edge construction	Heat-sealed and folded with nylon rope reinforcement
Grommet spacing	Metal grommets every 36 in
Corner features	Plastic corner reinforcements

Our Verdict

The CARTMAN 20x40 ft waterproof tarp is a sensible purchase for anyone who needs a large, clearly sized temporary cover that resists rain and dust and is easy to secure. It delivers strong value with reinforced heat-sealed edges and regular grommets, but buyers who require extreme durability under constant heavy strain should choose a heavier industrial tarp instead.

Frequently Asked Questions

Is the 20x40 ft size the actual finished measurement?
Yes, the marked size is the exact finished size so you receive a tarp that matches the listed coverage.

Will this tarp hold up in rain and snow?
It is designed to be dustproof and waterproof and performs well for seasonal rain and snow protection, but it is intended for temporary rather than permanent heavy-duty use.

How are the edges and corners reinforced?
Edges are heat-sealed and folded with internal nylon rope and plastic corner reinforcements are added to reduce tearing at stress points.