Core Tarps Extreme Heavy Duty 20 Mil Tarp Cover - Waterproof Tools

In this review of the Core Tarps Extreme Heavy Duty 20 Mil Tarp Cover, the bottom line is simple: it is for anyone who needs a heavy, dependable tarp that stays intact under harsh conditions. The reviewer found the tarp especially valuable for long-term outdoor protection because it is made from 100% virgin polyethylene and has reinforced edges and frequent metal grommets, which together make it noticeably more durable than thinner, recycled alternatives. If you want a tarp that resists tearing and handles year-round weather, this one delivers.

Key Features

• Finished size: The tarp is sold at its full finished size so buyers receive the full 30 x 40 ft coverage without losing inches to hemming or trimming.
• 100% virgin polyethylene: Using pure, non-recycled material gives the tarp higher tear resistance and longer lifespan compared with mixed-material sheets.
• Reinforced edges: Heavy hems prevent fraying and help the cover maintain shape when tied down in wind and rain.
• Strong grommets every 18 in: Metal grommets placed at close intervals make it easy to secure the tarp tightly with rope, bungee cords, or anchors.
• Waterproof, UV resistant: The ultra-thick 20 mil construction stands up to rain, snow and sun exposure for season-long protection.
• Multipurpose design: The tarp works for roofs, boats, pools, patio furniture, camping shelters and temporary floor protection during projects.

Who It's For

This tarp is best for homeowners, contractors, and outdoor gear owners who need a heavy-duty, weatherproof cover that resists ripping and handles repeated tie-downs. It is particularly suited for protecting roofs, boats, pools, and patio furniture where thicker material and close grommet spacing reduce flapping and failure over time.

Casual users who only need a lightweight temporary cover for a single day may find the weight and stiffness of a 20 mil tarp more than required, and those seeking decorative or breathable fabric covers should look elsewhere. Buyers sensitive to color fading should be aware some users report the surface dulling after extended UV exposure.

Pros & Cons

Pros

• Very durable construction from virgin polyethylene that resists tears and rot.
• Strong metal grommets every 18 in and reinforced edges make secure tie-downs reliable.
• Waterproof and UV resistant for year-round outdoor use.
• Sold at finished size so the stated 30 x 40 ft is the usable coverage received.

Cons

• The tarp is heavy and thick, which can make handling and storage more cumbersome than lighter alternatives.
• Some customers report the color fades or dulls after weeks in strong sun, though performance remains.

Specifications

Brand	Core Tarps
Material	100% virgin polyethylene
Thickness	20 mil
Finished size	30 x 40 ft
Grommet spacing	Every 18 in
Weave count	16 x 16
Weather resistance	Waterproof and UV resistant

Our Verdict

The Core Tarps Extreme 20 Mil tarp is a practical choice for anyone who needs a long-lasting, waterproof cover that will stand up to wind and repeated tying. Its finished size, heavy-duty virgin polyethylene and frequent grommets make it a good value for property protection and jobsite use, though buyers should expect greater weight and some potential color fading over extended sun exposure.

Frequently Asked Questions

Is the stated size the actual usable size?
Yes, the tarp is sold at finished size so you receive the full 30 x 40 ft coverage without missing inches.

Can this tarp be left outside year-round?
Yes, it is waterproof and UV resistant and built for year-round outdoor protection, though prolonged sun can dull the color over time.

How close are the tie-down points?
Metal grommets are placed every 18 in along reinforced edges to allow secure anchoring.