20 x 30 ft Heavy Duty 20 Mil Tarp Cover - Waterproof UV Resistant

In this review of the 20 x 30 ft Core Tarps Extreme Heavy Duty 20 Mil Tarp Cover the bottom line is simple: this tarp is for users who need a thick, weatherproof shield for roofs, boats, or outdoor gear and want a finished-size sheet that honestly measures to spec. The reviewer found the standout reason to buy is the tarp's construction from 100% virgin polyethylene, which gives it a dense, heavy feel and reliable water and UV protection without the stretched or undersized dimensions common from other makers.

Key Features

• Finished Size: The tarp delivers the full advertised dimensions so you get the full 20 ft by 30 ft coverage without losing inches on the edges.
• 100% Virgin Polyethylene: Made from pure, non-recycled material for greater tear resistance and longer life than mixed-material tarps.
• Reinforced Edges: Heavy reinforced hems reduce fraying and help the tarp keep its shape under tension when tied down.
• Strong Grommets: Metal grommets every 18 in allow secure tie-downs with rope or bungee cords for stable coverage in wind and rain.
• Weatherproof Performance: UV resistant and waterproof construction makes it suitable for year-round outdoor protection against sun, rain and snow.
• Multipurpose Design: Useful for roof patches, camping shelters, patio covers, pool protection and boat coverings for broad utility.

Who It's For

This tarp is aimed at homeowners, contractors, and outdoor enthusiasts who need a rugged, dependable cover that actually measures to the size listed. It suits anyone using a tarp for temporary roof repairs, shielding patio furniture, covering boats or pools, and for camping shelters where a thicker, heavier sheet is preferred.

Those who should look elsewhere include buyers seeking a lightweight, packable tarp for backpacking or frequent transport, or customers who require custom-cut or seam-sealed tarps for permanent installations - this product prioritizes heavy-duty durability over ultralight portability.

Pros & Cons

Pros

• Very durable feel from 100% virgin polyethylene that resists tearing and rot.
• Finished-size listing eliminates surprise shortfalls in coverage.
• Reinforced edges and metal grommets offer secure tie-down options.
• Effective waterproof and UV protection for year-round outdoor use.

Cons

• Some users report grommets can pull in extreme conditions, so extra reinforcement may be required for long-term heavy load use.

Specifications

Finished Size	20 ft x 30 ft
Thickness	20 mil (extreme heavy duty)
Material	100% virgin polyethylene
Weave Count	16 x 16
Grommet Spacing	Every 18 in with metal grommets
Edges	Reinforced hems
Performance	Waterproof, UV resistant, weatherproof

Our Verdict

The 20 x 30 ft 20 mil Core Tarps cover is a solid choice for anyone who needs a trustworthy, heavy-duty tarp that actually matches its listed size and offers strong water and UV protection. It represents good value for roof patching, boat and outdoor gear coverage, and general heavy-use applications, though buyers should consider adding extra reinforcement at attachment points for the longest service life.

Frequently Asked Questions

Is this tarp truly waterproof?
Yes. The thick virgin polyethylene material and reinforced construction provide dependable waterproof protection in rain and snow.

Will the grommets hold in high winds?
The metal grommets are spaced every 18 in and work well for most conditions, but some users reinforce corners or grommets if they expect prolonged heavy wind exposure.

Are the measurements exact or trimmed?
The tarp is sold as a finished size so the delivered tarp matches the advertised 20 ft x 30 ft dimensions without missing inches.