CARTMAN Finished Size 14x20 Ft Extra-Thick 20 Mil Brown Ultra Heavy-Duty Poly Tarp (UV Resistant, Waterproof)

The essentials

If you’re trying to protect gear from nasty weather, a tarp has to do more than “cover.” The CARTMAN finished-size poly tarp is built for coverage that stays put and holds up, using 100% virgin polyethylene and a noticeably heavy-duty construction.

The key detail here is the finished size promise. When you choose 14x20 feet, you’re not guessing about “marked vs actual” dimensions—on paper, it’s meant to arrive as the exact finished size you expect.

That said, no tarp is magic. In real life, performance comes down to how you secure it. This one is designed with reinforced edges and extra-thick material, but if it’s loosely fastened, wind can still find a way.

Key takeaways on durability and weather protection

This tarp is positioned as an ultra heavy-duty, multipurpose protective cover. It’s described as extra thick and “super sturdy,” with materials chosen to resist tearing, ripping, and rot. It’s also called out as UV resistant, waterproof, and weatherproof—specifically for harsh conditions like rain, wind, and snow.

One more practical point: it’s listed as 20 mil and includes a density of 260 GSM with a 16x16 weave count. Those details matter because they point to a denser woven structure rather than a thin, flimsy sheet. For day-to-day buying decisions, that usually means fewer worries about accidental punctures and less worry when it’s left outdoors.

Where it shines: giving belongings a “stay covered” layer for yards, rooftops, and outdoor storage.

What you’ll notice day to day

In practical use, tarps live or die by edges and how the material behaves when it’s stretched. This model is described as having reinforced edges, which helps with tying down and keeps the tarp from acting like it’s trying to unravel along the perimeter.

Example use: if you’re winterizing firewood or covering outdoor furniture, you can lay it flat over the pile, pull it snug along the edges, and secure it around the perimeter. The idea is that the waterproofing and UV resistance reduce exposure impact, while the thicker poly helps you avoid the “thin tarp” problem where corners or seams become the weak spot.

Worth noting: “waterproof” doesn’t automatically mean “no water will ever get in.” If water pooling occurs or the tarp isn’t pitched or secured well, some moisture can still work its way to edges.

Best use cases (and where it fits)

This CARTMAN tarp is marketed as widely used, including coverage for a truck, car, motorcycle, roof, yard, cabin, outdoor furniture, swimming pool, wood, firewood, and more. It’s also mentioned for camping and picnics.

So if your goal is general outdoor protection—think storage coverage, weather shielding, and temporary shelter—this is the sort of tarp you’d consider.

It’s not meant to be a precision fit garment, it’s a protective sheet. If you need something that’s designed for a very specific shape or a custom fit, you may find this style too generic and you’ll end up compensating with extra straps.

What to check before you buy

There are a couple of buying details worth double-checking so you don’t get surprised:

• Finished size vs rough estimates: the product emphasizes that the marked size is the exact finished size. Still, measure your coverage area and allow for how you’ll secure corners and overlap.
• Thickness expectations: it’s described as extra thick and 20 mil, which usually helps, but your securing method matters just as much in wind.
• Coverage intent: waterproofing is about resisting water, yet proper setup (pulling it tight, avoiding pooling) is what keeps it performing in real conditions.

Pros

Strengths

• Finished size is described as exact, which reduces the “will it actually fit?” uncertainty.
• Made from 100% virgin polyethylene, positioned to resist tearing, ripping, and rot.
• UV resistant, waterproof, and weatherproof for rain, wind, and snow use cases.
• Reinforced edges and ultra heavy-duty build for tougher outdoor handling.

Is it worth it?

It’s a solid pick if you want an extra-thick, UV resistant, waterproof poly tarp for outdoor protection—especially for storing wood, covering vehicles, or shielding yard items where weather exposure is a concern.

You may want to skip it if you only need lightweight, short-term cover and don’t want the bulk of a heavy-duty tarp, or if your setup requires a very custom shape where a flat sheet won’t seal or sit correctly.

Ultimately, for most multipurpose coverage needs, this looks like the “heavy-duty, weather-focused” style of tarp you buy once and try to keep doing the job outdoors.