Heavy Duty 10 Mil Green/Black Tarp 30 x 40 - Waterproof, UV Resistant

In this review of the Heavy Duty 10 Mil Green/Black Tarp 30 x 40, the bottom line is simple: this tarp is aimed at homeowners and outdoors people who need a tough, all-season cover that resists tearing and blocks water and UV. The reviewer found the main reason to buy is the construction-finished size sheeting made from 100% virgin polyethylene with reinforced edges and metal grommets-which delivers a noticeably heavier, more durable feel than typical mixed-material tarps.

Key Features

• Finished Size: You get the full 30 x 40 finished dimensions so the tarp covers as expected without being short a few inches on each side.
• 100% Virgin Polyethylene: The pure polyethylene weave gives the tarp a dense, durable body that resists tearing, ripping and rot better than mixed or recycled blends.
• Reinforced Edges: Reinforced hems add strength around the perimeter so corners and sides withstand tension when tied down.
• Metal Grommets: Grommets every 24 in make it easy to secure the cover with bungee cords or rope and help distribute load when lashed down.
• Weatherproof and UV Resistant: The 10 mil thickness combined with UV treatment helps the tarp repel water and resist sun damage for seasonal outdoor use.
• Multipurpose Design: The tarp works for roofs, camping, patio covers, pools, boats and temporary canopies, offering broad utility for home projects.

Who It's For

This tarp is best for homeowners, roofers doing temporary protection, campers who want a heavy ground or canopy cover, and anyone storing equipment outdoors who needs weatherproof protection. The 30 x 40 finished size suits large jobs like covering boats, patio furniture groups, or sections of roof.

It is less appropriate for ultra-lightweight backpacking where weight matters, or for applications that require custom cut shapes; it is a large, heavy sheet intended for heavy-duty protection rather than compact portability.

Pros & Cons

Pros

• Durable 100% virgin polyethylene construction gives a substantial, long-lasting cover.
• Finished 30 x 40 dimensions match expectations and eliminate shortfall sizing problems.
• Reinforced edges and grommets every 24 in make tie-downs secure and easier to manage.
• Waterproof and UV resistant for year-round outdoor use.

Cons

• Some users report grommets can pull out under extreme strain, so extra care or reinforcement may be needed for high-wind installations.
• At 10 mil thickness the tarp is heavy and not ideal where low weight or compact packing is required.

Specifications

Brand	Core Tarps
Finished Size	30 x 40 ft
Material	100% virgin polyethylene
Thickness	10 mil
Grommet Spacing	Every 24 in
Weave Count	14 x 14
Color	Green/Black

Our Verdict

The 30 x 40 Heavy Duty 10 Mil Green/Black tarp is a solid value for anyone needing a large, weatherproof cover that really feels built to last; its finished sizing and pure virgin polyethylene construction make it reliable for roof patches, boat covers and heavy outdoor use, though installers should reinforce grommets for prolonged high-wind exposure.

Frequently Asked Questions

Is this tarp waterproof?
Yes. The 10 mil poly and sealed weave provide waterproof protection suitable for rain and snow.

Will the grommets hold in strong wind?
Grommets are metal and spaced every 24 in, but in extreme winds some users recommend adding extra reinforcement or tying points to prevent pullout.

Does the listed size include hems?
Yes. The product uses finished sizing so the 30 x 40 measurement is the full usable size.