Core Tarps Extreme Heavy Duty 20 Mil Tarp Cover 12 x 12 - Waterproof

Our review of the Core Tarps Extreme Heavy Duty 20 Mil Tarp finds it best suited to homeowners and outdoor workers who need a no-nonsense, heavy poly tarp for year-round protection. The single biggest reason to buy is its construction from 100% virgin polyethylene, which gives the sheet a noticeably solid weight and resistance to rot compared with typical mixed-material tarps. For anyone covering roofs, boats, patio furniture or creating an emergency shelter, this tarp delivers reliable weatherproofing without a premium price.

Key Features

• Finished size: The tarp is sold at the full stated dimensions so buyers get the full 12 x 12 finished coverage without losing inches to hem or shrinkage.
• 100% virgin polyethylene: Made from pure, non-recycled material for added tear resistance and reduced chance of rot for long-term outdoor use.
• Reinforced edges: Strong hems and a 16 x 16 weave count help the tarp resist fraying and distribute stress along the perimeter.
• Metal grommets every 18 in: Heavy-duty grommets allow secure tie-down with rope or bungee cords and make it simpler to fasten on irregular loads.
• Weatherproof and UV resistant: The tarp is waterproof and treated to handle sun exposure and seasonal weather, suitable for roofs, pools and camping.
• Multipurpose design: It works for covers, ground cloths, makeshift canopies and general jobsite protection thanks to its combination of weight and flexibility.

Who It's For

This tarp is aimed at DIYers, contractors, and outdoor homeowners who need a dependable, heavy duty sheet for seasonal protection or emergency repair. Its 20 mil thickness and reinforced construction suit it for roof patching, covering boats and protecting patio sets through storms.

People who need ultra-lightweight backpacking tarps or precise fabric specifications should look elsewhere, and those expecting industrial-grade truck tarps with specialized tie-down systems may prefer a dedicated commercial tarp instead.

Pros & Cons

Pros

• Durable feel from virgin polyethylene and a substantial weight that holds up in wind and rain.
• Finished size guarantee avoids disappointing undersized sheets and simplifies planning for coverage.
• Reinforced edges and metal grommets every 18 in make secure fastening straightforward.
• Good value for the combination of thickness, UV resistance and general-purpose utility.

Cons

• Some users report occasional tearing under extreme abrasion, so it is not invulnerable to sharp edges.
• Thickness may vary slightly between production runs, which can affect flexibility or fold size.

Specifications

Brand	Core Tarps
Finished size	12 x 12 ft
Material	100% virgin polyethylene
Thickness	20 mil (nominal, slight variation possible)
Weave count	16 x 16
Grommet spacing	Every 18 in with reinforced edges
Color	Blue

Our Verdict

The Core Tarps Extreme 20 Mil 12 x 12 is a solid, budget-friendly heavy duty tarp for homeowners and tradespeople who need dependable weatherproof coverage. Its finished size assurance and virgin polyethylene build make it a practical choice for roof patches, equipment covers and seasonal protection, delivering strong value so long as buyers accept some variability in thickness and not-invincible abrasion resistance.

Frequently Asked Questions

Is this tarp truly waterproof?
Yes. The polyethylene material and reinforced construction make the tarp waterproof and suitable for rain and snow protection.

How often are grommets spaced?
Metal grommets are installed every 18 in along reinforced edges to allow secure tie-downs.

Will the 20 mil thickness tear easily?
Most users find it very durable thanks to virgin polyethylene, but abrasive contact with sharp objects can still cause tears, so care when fastening is advised.