12x20FT Waterproof Tarp 16 Mil Heavy Duty - Thick, UV Blocking

In this review of the 12x20FT Waterproof Tarp, the bottom line is simple: this tarp is for anyone who needs a heavy, long-lasting cover that resists sun and water. The most convincing reason to buy is its extra thick 16 mil construction paired with a high fabric weight, which translates to noticeably more heft and protection than typical thin tarps. For outdoor storage, temporary shelter, or protective covers this tarp delivers obvious durability while remaining affordable and versatile.

Key Features

• Extra thick 16 mil: The 16 mil thickness provides a substantial barrier against punctures and wear compared with thinner tarps, helping protect items longer.
• Heavy fabric weight: At 7.76 oz per square yard and a 15x17 weave count, the material feels dense and resists tears under normal outdoor use.
• Brass grommets every 23.6 in: Brass grommets placed at regular intervals make it easy to secure the tarp with rope or bungee cords and reduce tearing at attachment points.
• Reinforced edges: Folded and stitched edges add strength to the perimeter so the tarp holds up when tied down or draped repeatedly.
• Premium polyethylene material: The polyethylene composition stays flexible in a range of conditions and helps block UV rays and moisture to protect covered items.
• Multipurpose use: The tarp functions as a cover for boats, grills, lumber, furniture, or as a groundsheet or tent component while camping.

Who It's For

This tarp is best for homeowners, DIYers, and campers who need a rugged, waterproof cover for outdoor equipment, firewood, grills, small boats, or patio furniture. The 12x20 ft finished size suits covering medium to large objects and provides ample overlap when securing to frames or structures.

Those who should look elsewhere include users who require exact precision sizing for a tight fit, or professional contractors needing specialized fire-rated or heavy industrial tarps beyond polyethylene capabilities. Also consider alternatives if you need a lighter, highly breathable tarp for long-term breathable storage.

Pros & Cons

Pros

• Thick 16 mil material offers strong puncture and abrasion resistance for general outdoor protection.
• Brass grommets and reinforced edges simplify installation and reduce edge wear when tied down.
• Waterproof and UV blocking material protects items from moisture and sun damage.
• Generous 12x20 ft coverage works for many common outdoor projects and covers.

Cons

• Finished size can vary slightly, so the tarp may be a few inches off from nominal dimensions for precise fits.
• Some customers reported seams splitting under heavy strain, indicating occasional variability in durability.

Specifications

Finished size	12x20 ft
Material	Premium polyethylene
Thickness	16 mil
Fabric weight	7.76 oz per square yard
Weave count	15x17
Grommet spacing	Every 23.6 in with brass grommets
Color	Silver/black

Our Verdict

The 12x20FT Waterproof Tarp is a strong value for anyone who needs a thicker-than-average polyethylene cover that blocks UV and keeps out moisture. It is particularly good for seasonal covers, camping groundsheet use, and general outdoor protection; just allow for slight size variation and inspect seams if you plan heavy strain. Overall it delivers solid protection at a reasonable price.

Frequently Asked Questions

Is this tarp fully waterproof?
The tarp is made from waterproof polyethylene and is designed to keep out rain and moisture when properly secured.

How often are grommets placed?
Brass grommets are located approximately every 23.6 in to make tying down and fastening straightforward.

Will the finished size match exactly 12x20 ft?
The finished size is the actual measured size after edges are folded and stitched, and measurements may vary slightly by a few inches.