Heavy Duty 8 Mil Green/Black Tarp 40 in x 40 in - Waterproof Cover

In this review the Core Tarps Heavy Duty 8 Mil Tarp in Green/Black 40 in x 40 in is judged as a practical, heavy-duty cover for outdoor protection; it is best for homeowners, campers, and DIYers who need a robust, weatherproof sheet rather than a lightweight temporary drop cloth. The single biggest reason to buy is its construction from 100% virgin polyethylene, which gives the tarp a noticeably thick feel and reliable resistance to tearing, rot and prolonged UV exposure.

Key Features

• Finished Size: The tarp is sold as a full finished 40 in x 40 in piece so buyers receive the full dimensions without missing inches from the edges.
• Material Quality: Made from pure virgin polyethylene, the sheet resists rot and delivers consistent thickness and durability compared with mixed or recycled blends.
• Reinforced Edges: Reinforced hems improve tear resistance at stress points so the tarp holds shape when tied down for roof, boat, or patio protection.
• Strong Grommets: Metal grommets placed every 24 in allow secure tie-down with rope or bungee cords, simplifying anchoring in wind and rain.
• Weather Resistance: The heavy-duty tarp is waterproof and UV resistant so it can be used year-round against rain, sun and snow.

Who It's For

This tarp suits homeowners who need a dependable cover for small roof patches, outdoor furniture, pools or boats, and campers wanting a heavy-duty ground or shelter layer. The finished sizing and reinforced edges make it practical for projects that require a true full-size sheet rather than one that runs short on dimension.

Those seeking an ultra-lightweight, highly packable tarp for long-distance backpacking should look elsewhere, as this 8 mil poly sheet prioritizes durability and weight over minimal bulk. Contractors who need custom-cut commercial tarps in exact industrial dimensions may also prefer a trade supplier.

Pros & Cons

Pros

• Thick, heavy feel from 100% virgin polyethylene increases resistance to tears and rot in prolonged outdoor use.
• Finished size delivers the exact 40 in x 40 in coverage buyers expect, avoiding shorted edges.
• Metal grommets and reinforced hems make secure tie-downs straightforward and reliable for most domestic uses.
• Waterproof and UV resistant construction lets the tarp perform year-round in varied weather.

Cons

• Some users report grommet areas can pull under extreme stress, so heavy-duty anchoring or extra reinforcement may be needed for very windy conditions.

Specifications

Brand	Core Tarps
Finished Size	40 in x 40 in
Material	100% virgin polyethylene
Thickness	8 mil
Grommet Spacing	Every 24 in with metal grommets
Edges	Reinforced hems
Resistance	Waterproof and UV resistant

Our Verdict

The Core Tarps 8 mil 40 in x 40 in Green/Black tarp is a solid value for homeowners and outdoor users who need a dependable, true-size cover that resists rot, UV and wet weather. It is not the lightest tarp available, but its reinforced edges and virgin polyethylene construction make it a practical, longer-lasting choice for protecting roofs, patio furniture, boats and campsite gear.

Frequently Asked Questions

Is this tarp fully waterproof?
Yes, the tarp is designed to be waterproof and weatherproof for protection in rain and snow.

How often are grommets placed?
Metal grommets are installed at approximately every 24 in around the perimeter for tie-down points.

Does the stated size reflect the actual usable dimensions?
Yes, the product uses finished sizing so the listed 40 in x 40 in is the actual full-size dimension received.