RAINDEWAY 12 Mil Heavy Duty White Tarp 12x20 ft - Thick UV Resistant

In this review the RAINDEWAY 12 Mil Heavy Duty White Tarp is evaluated as a no-frills, heavy-duty cover for outdoor protection. The bottom line: this tarp is for people who need an extra-thick, reinforced white tarp that resists UV and handles regular wear; the single biggest reason to buy is its substantial 12 mil thickness and reinforced edges that make it feel durable and long lasting in exposed conditions. The review focuses on real-life handling, the grommet spacing and how well it performs as a shade sail or camper cover.

Key Features

• 12 Mil construction: The extra-thick material provides a beefy feel and better resistance to punctures and abrasion than thinner tarps.
• Tightly woven polyethylene: A 14 x 14 weave count creates a dense surface that contributes to tear resistance and structural strength.
• UV resistant finish: Designed to block sun exposure so items underneath last longer and the tarp itself resists breakdown from sunlight.
• Metal grommets and reinforced edges: Well-spaced grommets and finished edges allow secure tie-downs and reduce ripping under tension.
• Waterproof and weatherproof: The tarp sheds rain and snow in most conditions, making it useful for seasonal storage and temporary covers.
• Full finished size: The tarp ships at its stated dimensions so customers receive a usable 12x20 ft sheet without significant undersizing.

Who It's For

This tarp suits homeowners, campers, and DIYers who need a heavy canvas-like cover for protection against sun, wind and light-to-moderate precipitation; it is particularly useful as a shade sail, camper cover, or to protect outdoor furniture. The reinforced edges and metal grommets make it practical for repeated installation and removal.

It is not aimed at those who require a perfected marine-grade dry shelter in every downpour or who need a custom-fitted cover; some users report mixed experiences with waterproofing in extreme conditions, and anyone needing exact tailoring or very small tolerances should consider a fitted option instead.

Pros & Cons

Pros

• Thick 12 mil material offers genuine durability and a substantial feel.
• Reinforced edges and metal grommets reduce tearing when tied down.
• Good UV resistance keeps the tarp and covered items protected from sun damage.
• Full finished size provides predictable coverage with usable dimensions.

Cons

• Waterproof performance received mixed feedback, so heavy, prolonged rain may reveal leaks in some setups.
• The size may be slightly larger than expected for a few buyers, requiring extra planning when securing it.

Specifications

Material	Tightly-woven polyethylene
Thickness	12 Mil (about 6 oz per sq yd)
Weave count	14 x 14
Finished size	12x20 ft
Grommet spacing	About 17.7 in
Edge finish	Reinforced edges with metal grommets

Our Verdict

The RAINDEWAY 12 Mil Heavy Duty White Tarp is a practical, value-oriented choice for anyone who needs a thick, reinforced tarp for sun protection, periodic rain cover and heavy-duty outdoor use. Its construction, grommet spacing and full finished size make it versatile for campers, shade applications and general-purpose covers, though those needing absolute waterproofing in severe storms should be cautious.

Frequently Asked Questions

Is this tarp truly heavy duty?
Yes, the 12 mil thickness and 14 x 14 weave produce a noticeably thick, durable sheet suitable for demanding outdoor tasks.

Will it block UV and protect items from sun?
The tarp is UV resistant and works well as sun protection for covered items, reducing sun-related wear.

Are the grommets spaced for easy tie-down?
Yes, metal grommets are placed about 17.7 in apart and the reinforced edges make tying down straightforward and secure.