RAINDEWAY 12 Mil Heavy Duty White Tarp 20x20 ft - Thick Weatherproof

In this review the RAINDEWAY 12 Mil Heavy Duty White Tarp 20x20 ft is assessed for outdoor protection tasks where durability and UV resistance matter most. The bottom line is that this tarp is aimed at homeowners, contractors, and campers who need a thick, reinforced cover that stands up to wind and sun; its single biggest selling point is build quality - a 12 mil thickness with tightly woven polyethylene and reinforced edges that give a reassuringly heavy, durable feel.

Key Features

• 12 Mil thickness: The extra-thick material provides a heavy-duty barrier that resists tearing and holds shape under stress.
• Tightly-woven polyethylene: A 14 x 14 weave count and about 6 oz per sq yard give the tarp a substantial, durable structure.
• UV resistant: The white surface reflects sunlight and offers protection from sun damage for covered items and the tarp itself.
• Metal grommets and reinforced edges: Grommets spaced about 17.7 in apart plus reinforced hems make it easier to secure the tarp and improve longevity in windy conditions.
• Waterproof and weatherproof: The thick construction is designed to shed rain, snow, and provide an all-weather cover when properly installed.

Who It's For

This tarp is best for people who need a reliable, heavy-duty cover: contractors protecting materials on job sites, homeowners covering furniture or woodpiles, and RV or boat owners who want a durable seasonal cover. Its thickness and grommet layout make it suitable for applications that must withstand wind and sunlight.

Those who need an ultra-precise fit or a lightweight, highly compact tarp for backpacking should look elsewhere; the RAINDEWAY 12 mil is intentionally heavy and bulky, and some buyers may find the full-size dimensions slightly larger than expected for tight, tailored covers.

Pros & Cons

Pros

• Well-built construction and reinforced edges resist tearing and handle wind stress effectively.
• Thick, tightly woven polyethylene offers solid UV protection and a substantial feel.
• Metal grommets spaced around the perimeter make securing the tarp straightforward for many uses.
• Multipurpose size that can serve as a shade sail, camper cover, or furniture protector.

Cons

• Some users report mixed results on waterproofing; performance depends on installation and overlap at seams.
• At full 20x20 ft size the tarp is bulky and can be awkward to handle alone when positioning.

Specifications

Material	Tightly-woven polyethylene
Thickness	12 mil
Weight	About 6 oz per sq yard
Weave count	14 x 14
Finished size	20 ft x 20 ft
Grommet spacing	About 17.7 in apart
Edges	Reinforced with metal grommets

Our Verdict

For anyone needing a heavy-duty, sun-resistant cover the RAINDEWAY 12 Mil White Tarp is a solid, value-oriented choice because of its thick weave, reinforced edges, and useful grommet spacing. It is particularly well suited to home and jobsite protection where durability is more important than minimal pack size, though buyers should allow extra material for overlaps and proper waterproof setup.

Frequently Asked Questions

Is this tarp waterproof?
It is designed to be waterproof and weatherproof, but sealing, overlaps, and correct installation affect real-world waterproof performance.

How durable are the grommets?
The tarp has metal grommets with reinforced edges spaced about 17.7 in apart, which improves durability for tiedowns and repeated use.

Will this fit my camper or furniture?
The finished size is 20 ft x 20 ft and the material is heavy, so it can cover most campers or large outdoor furniture but may require extra hands to position and secure.