CARTMAN 20x20 ft 12 Mil Heavy Duty Poly Tarp - Extra Thick Protection

In this review the CARTMAN 20x20 ft 12 mil tarp is evaluated for homeowners and jobsite users who need a stout, weather-resistant cover. The single biggest reason to consider this tarp is its construction: a finished-size, 12 mil thickness made from 100% virgin polyethylene, which delivers a notably heavier, thicker feel than lighter general-purpose tarps and promises more resistance to tearing and rot in everyday outdoor use.

Key Features

• 12 mil thickness: The extra-thick material gives stronger puncture and abrasion resistance compared with thin tarps, making it suitable for longer-term outdoor coverage.
• Finished size accuracy: You receive the exact chosen dimensions so the tarp fits planned coverage without unpleasant surprises from undersized pieces.
• 100% virgin polyethylene: Using non-recycled material increases material integrity so the sheet is less prone to early degradation, tearing, or rot.
• Aluminum grommets every 18 in: Reinforced tie points spaced regularly let you secure the tarp tightly without concentrating stress at a few points.
• Sewn poly rope hem: The rope-reinforced edges reduce deformation and help prevent the hem from tearing under tension.
• UV treated and waterproof: Sun protection and waterproofing combine to keep items dry and slow breakdown from sunlight exposure.

Who It's For

This tarp is best for homeowners, contractors, and outdoors enthusiasts who need an affordable, heavy-duty cover for equipment, stacked firewood, temporary roof patches, or jobsite protection. The 12 mil thickness and reinforced edges suit scenarios where a standard light tarp would fail.

It is less suited for users who require a permanently installed roofing membrane or a decorative tarp solution; also those who need ultralight, easily packable tarps for backpacking should look at lighter alternatives.

Pros & Cons

Pros

• Sturdy 12 mil construction provides clear improvement in thickness and feel over basic tarps.
• Finished-size promise avoids fit surprises when exact coverage is required.
• Good value for the material and reinforcement features like grommets and sewn rope hem.
• Waterproof and UV treated for broad all-weather protection.

Cons

• Durability reports are mixed in long-term use; some users experience tearing after many months under heavy exposure.
• The weight and thickness make it less convenient to fold and carry for very mobile applications.

Specifications

Our Verdict

The CARTMAN 20x20 ft 12 mil tarp is a sensible buy for people needing a heavier, more robust protective cover at a reasonable cost; its virgin polyethylene construction, true finished size, and reinforced hems make it good value for general outdoor protection. If long-term, heavy-duty exposure is expected, inspect tie-down points periodically and consider rotation or replacement after extended harsh seasons.

Frequently Asked Questions

Is this tarp fully waterproof?
Yes, the material is waterproof by design and the tarp is intended to keep items dry in rain and snow.

How often are the grommets placed?
Aluminum grommets are spaced approximately every 18 in around the perimeter to allow secure tie-downs.

Will the size be exact?
The product is sold as a finished size, so you should receive the stated 20 ft x 20 ft dimensions rather than a smaller measurement.