Best Tarps for Under Tents: RAINDEWAY, CARTMAN & More Rated

You need a tarp that’s thick, waterproof, and tough enough to handle rough ground. The RAINDEWAY 8×10 ft with 9 mil polyethylene offers the highest puncture resistance, while CARTMAN’s 8-mil models provide reliable durability with heat-sealed edges. Amazon Basics and Tyroc use rip-stop and dual lamination for tear and moisture resistance. Lightweight options like Grizzly’s 9.6 oz tarp save pack space but use thinner 5 mil material. Choose based on balance between weight, thickness, and seam protection-your shelter depends on it. Pick one that matches your terrain and load.

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Notable Insights

• Choose thick, puncture-resistant materials like 8–9 mil polyethylene or 420D Oxford for long-lasting tent protection.
• Opt for tarps with heat-sealed edges and no needle holes to ensure complete waterproof performance.
• Select the right size-slightly smaller than your tent-to prevent water pooling while maximizing coverage.
• Look for reinforced corners and rust-resistant grommets spaced 18–36 inches apart for secure, durable anchoring.
• Lightweight, packable designs under 2 pounds are ideal for backpacking and easy transport.

CARTMAN 8x10ft Waterproof Green Tarp 8 Mil

If you need one reliable, budget-friendly tarp that handles moisture, sun exposure, and rough setup conditions without fail, the CARTMAN 8x10ft Waterproof Green Tarp fits the role. I’ve used it under my tent on rocky ground, and the 8-mil polyethylene held up fine-no punctures. It weighs just over two pounds, so it’s easy to carry, and the 120×96-inch size gives full coverage. The heat-sealed edges keep water out, and the UV protection means it won’t degrade fast in sunlight. Metal grommets every 36 inches let me secure it tightly, and the reinforced corners handle strain without tearing. It’s not flashy, but it works.

Best For: Outdoor enthusiasts and DIYers needing a durable, lightweight tarp for camping, emergency shelters, or equipment cover.

Pros:

• Waterproof 8-mil thickness with heat-sealed edges prevents leaks and withstands rough terrain
• UV-protected and reinforced with metal grommets every 36 inches for secure, long-lasting outdoor use
• Lightweight at just 2.12 pounds and ready to use for quick setup in various conditions

Cons:

• Green color offers less visibility in low-light or emergency situations
• Plastic-reinforced corners, while strong, may still degrade over extended heavy use
• Limited color options for those preferring camouflage or high-visibility variants

TICONN Heavy Duty Waterproof Tarp 6×8

I rely on the TICONN Heavy Duty Waterproof Tarp 6×8 when I need a dependable ground cover that won’t fail in wet or sunny conditions. It’s 5.5 mil thick, made of waterproof polyethylene with a silver backing that boosts UV resistance. The double-stitched edges and reinforced corners hold up well under tension, and the rust-resistant aluminum grommets, spaced every 18 inches, make securing it easy. At 72×96 inches and just 1.22 pounds, it’s compact but covers enough ground for small tents or gear staging. I’ve used it as a groundsheet, sun shade, and firewood cover-it sheds water and resists tearing. It’s not the thickest tarp out there, but it balances weight, durability, and price for regular camping use.

Best For: Outdoor enthusiasts and DIYers who need a lightweight, durable, and affordable tarp for camping, gear protection, or temporary weather shielding.

Pros:

• Waterproof 5.5 mil polyethylene with silver UV-reflective backing provides reliable protection from rain and sun
• Reinforced edges, double-stitched corners, and rust-resistant aluminum grommets enhance durability and secure setup
• Lightweight and versatile for use as a groundsheet, sunshade, or cover for firewood, vehicles, and construction materials

Cons:

• Not the thickest tarp available, so may not withstand extreme or prolonged heavy-duty use
• Grommets spaced every 18 inches may require additional tie-downs for windy conditions
• Blue color with silver backing may show wear or dirt over time with frequent use

Amazon Basics Waterproof Camping Tarp

The Amazon Basics Waterproof Camping Tarp is my go-to pick when I need a no-frills, dependable ground cover that won’t stretch my budget or add bulk to my pack. I’ve used it under my tent in rain and mud, and it holds up-thanks to its 7.5 x 9.5-foot size and rip-stop polyethylene build. The dual-laminated material keeps water out, while reinforced corners and sturdy grommets let me secure it tightly. At just 0.68 kg, it’s light but tough, and though it doesn’t fold smaller than other ultralight options, it fits easily in my gear. I’ve patched small tears with tape, and it’s still functional. It’s not flashy, but it gets the job done.

Best For: Budget-conscious campers and outdoor enthusiasts seeking a lightweight, durable tarp for basic shelter, ground cover, or emergency use.

Pros:

• Durable rip-stop polyethylene with dual lamination provides reliable waterproof protection
• Reinforced corners and grommets ensure secure setup in various conditions
• Lightweight at 0.68 kg and versatile for multiple uses including ground cover, shelters, and gear protection

Cons:

• Not as compact as ultralight tarps, taking up more pack space
• Material can feel stiff in cold weather
• Limited color options and minimal additional features like guy lines or stake loops

Clostnature Tent Footprint Waterproof Tarp

This tarp works best for backpackers who need a lightweight, durable ground cover that matches their Clostnature 1-person tent. I use it to protect my tent floor from abrasion and moisture, and it adds minimal weight at just 6.3 oz. Measuring 87 x 32 inches, it fits snugly under my tent without pooling water. Made from 190T ripstop polyester with a waterproof coating, it handles rough terrain without tearing. It’s compact, folding into a phone-sized bag for easy packing. While it’s not large enough for extended shelters, I’ve used it as a picnic mat or emergency groundsheet when needed. It’s functional, no-frills, and backed by a one-year warranty.

Best For: Backpackers seeking a lightweight, durable, and tent-specific ground cover to protect their Clostnature 1-person tent from wear, moisture, and abrasion.

Pros:

• Lightweight at only 6.3 oz, ideal for backpacking and easy to pack
• Made from durable 190T ripstop polyester with waterproof coating for long-lasting performance
• Multi-functional use as a groundsheet, picnic mat, or emergency shelter

Cons:

• Sized specifically for Clostnature 1-person tent, limiting compatibility with other models
• Minimal extra coverage, not suitable for large shelters or extended setups
• Limited warranty period of one year for material and workmanship defects

RAINDEWAY 8×10 Ft Waterproof Poly Tarp

You’ll want the RAINDEWAY 8×10 Ft Waterproof Poly Tarp if you need a dependable, lightweight groundsheet that handles moisture and abrasion without adding bulk to your pack. I use it under my tent and it’s held up through rain and rough terrain. The 5.5 mil polyethylene resists tears and blocks water, while the sealed surface stops leaks. Reinforced edges and rust-proof grommets every 18–24 inches let me secure it tightly. It weighs just 1.32 lbs, so it won’t slow me down. Yes, it’s thin, but for the weight and price, it’s reliable protection.

Best For: Outdoor enthusiasts and campers seeking a lightweight, durable tarp for ground cover or emergency shelter in variable weather conditions.

Pros:

• Waterproof 5.5 mil polyethylene construction with sealed surface prevents leaks and withstands rain and rough terrain
• Reinforced edges and rust-resistant grommets every 18–24 inches ensure secure fastening and improved tear resistance
• Lightweight at only 1.32 lbs, making it easy to carry and ideal for backpacking or portable protection

Cons:

• Relatively thin material may not withstand prolonged heavy abuse or sharp objects
• Limited UV resistance over time, potentially degrading with extended sun exposure
• Basic design lacks added features like tie-down ropes or carry bag for convenience

CARTMAN 6x8ft Waterproof Green Tarp 8 Mil

A lightweight yet durable 8 mil polyethylene build makes the CARTMAN 6×8ft Tarp a solid pick for backpackers and car campers who need reliable ground protection without excess bulk. I’ve used it as a groundsheet, and its 1.15-pound weight won’t strain your pack. The 130 g/m² fabric resists tears, and heat-sealed edges prevent fraying. With no needle holes and a fully waterproof design, it keeps moisture out. UV protection and reinforced corners add life to the tarp, while metal grommets every 36 inches make staking easy. It’s not the largest, but at 6×8 feet, it fits small to mid-sized tents and doubles as an emergency shelter or gear cover.

Best For: Backpackers and car campers seeking a lightweight, durable groundsheet or emergency shelter with reliable waterproof protection and easy setup.

Pros:

• Lightweight at 1.15 pounds and compact enough for easy packing, ideal for outdoor adventures
• 8 mil thick polyethylene with heat-sealed edges and no needle holes ensures full waterproofing and tear resistance
• Reinforced corners, UV protection, and grommets every 36 inches enhance durability and ease of securing

Cons:

• Limited size at 6×8 feet may not cover larger tents or gear without overlap
• Dual-sided green color offers low visibility, which may not appeal to users wanting high-contrast signaling in emergencies
• Polyethylene material, while waterproof, is less breathable and may condense moisture when used as a shelter interior lining

RAINDEWAY 8x10ft Waterproof Poly Tarp (9Mil)

I choose the RAINDEWAY 8x10ft Waterproof Poly Tarp (9Mil) when I need a dependable ground cover that balances durability and weight for backpacking and car camping. It weighs 2.29 pounds-light enough to carry but thick enough at 9 mil to resist tears. The polyethylene material is fully waterproof and holds up against UV exposure, so it won’t degrade quickly in sunlight. Reinforced edges and rust-resistant metal grommets every 24 inches let me secure it tightly. It fits under most tents without folding, and the black side absorbs less heat than solid black tarps. I’ve used it in rain and wind with no leaks. It’s not the lightest, but it’s tough where it counts.

Best For: Backpackers and car campers seeking a durable, waterproof tarp that balances weight and strength for reliable outdoor protection.

Pros:

• 9 mil thickness provides excellent tear and puncture resistance while remaining lightweight at 2.29 pounds
• Fully waterproof and UV-resistant polyethylene material with reinforced edges and rust-resistant grommets every 24 inches
• Versatile 8x10ft size fits under most tents and performs well in rain, wind, and sun without leaking or degrading

Cons:

• Slightly heavier than ultralight tarps, making it less ideal for long-distance backpacking
• Grommets spaced every 24 inches may require additional anchoring for secure setup in high winds
• Green/black color may not suit aesthetic preferences for backyard or decorative use

Grizzly Tarps 6×8 Heavy Duty Poly Tarp

Since I need a reliable ground cover that won’t fail during extended trips, the Grizzly Tarps 6×8 Heavy Duty Poly Tarp stands out for backpackers and car campers who demand durability without excess weight. At 5 mil thick and 9.6 oz, it’s lightweight but tough, with 8 x 8 woven fibers and reinforced borders to resist tears. It’s fully waterproof and includes UV protection, so it holds up in rain and sun. Aluminum grommets every 34–36 inches let me secure it tightly. At 6×8 feet, it fits under most tents and works for boats, vehicles, or emergency patches. It’s not the thickest, but it balances strength and packability well.

Best For: Backpackers and car campers who need a durable, lightweight, and waterproof ground tarp for extended outdoor trips.

Pros:

• Lightweight at 9.6 oz yet built with 5 mil thick polyethylene and 8 x 8 woven fibers for strong tear resistance
• Fully waterproof with UV protection, ideal for withstanding rain, sun, and diverse weather conditions
• Reinforced borders and aluminum grommets every 34–36 inches ensure secure anchoring and long-term durability

Cons:

• Not the thickest option available, which may limit performance in extreme conditions
• Blue color may fade over time with prolonged UV exposure
• Grommet spacing may require additional tie-down solutions for smaller or irregular setups

Azarxis Waterproof Camping Tarp Hammock Rain Fly

You’ll find the Azarxis Waterproof Camping Tarp a solid pick if you need a dependable ground cover that pulls double duty in tight spaces. I’ve used the 5 x 7 ft model-it’s light at just under 11 ounces and packs small with the included pouch. Made from 420D Oxford cloth, it resists tears and holds up to rain thanks to its waterproof coating. The 12 metal grommets make it easy to secure as a ground cloth, rain fly, or sunshade. At 59 x 86 inches, it fits snugly under most two-person tents. It’s not the largest option, but its weight and versatility suit backpacking and quick setups. A 20-month warranty backs it-useful if issues arise.

Best For: Backpackers and outdoor enthusiasts seeking a lightweight, versatile tarp for quick shelters, ground cover, or sun protection in compact setups.

Pros:

• Lightweight at just 10.88 ounces and highly portable with a compact storage pouch
• Durable 420D Oxford cloth with waterproof coating resists tears and weather
• Multipurpose use as a rain fly, ground cloth, sunshade, or beach blanket with 12 metal grommets for secure setup

Cons:

• Slightly smaller than listed size (59 x 86 in vs. advertised 60 x 84 in), which may affect fit under larger tents
• Limited color options may not appeal to all users
• Warranty period of 20 months is shorter than some competitors’ offerings

Amazon Basics Waterproof Camping Tarp

The Amazon Basics Waterproof Camping Tarp works best for budget-conscious campers who need a dependable ground cover without extra features. I use it mainly under my tent, and the 96 x 120-inch size gives full coverage for my 7.5 x 9.5-foot shelter. It’s made of rip-stop polyethylene, so light is no issue-it weighs just 0.68 kg-and the dual-laminated layers keep water out. Reinforced corners and steel grommets hold well in wind. Yes, it’s basic, but it survives rough terrain and heavy rain. I pack it easily; the storage roll fits in tight spaces. Dark green blends well in forests. It’s not fancy, but it performs.

Best For: Budget-conscious campers seeking a reliable, lightweight ground cover with straightforward functionality for basic outdoor protection.

Pros:

• Durable rip-stop polyethylene resists tears and provides effective waterproofing
• Lightweight and compact for easy transport and storage
• Reinforced corners with steel grommets ensure secure setup in windy conditions

Cons:

• Basic design lacks advanced features like tie-out points or guy lines
• Polyethylene material may degrade over time with prolonged UV exposure
• Limited color options; dark green may not suit all preferences

Factors to Consider When Choosing Tarps for Under Tents

You need a tarp that matches your tent’s size and fits snugly underneath without overhanging too much. Pick one made from durable material with reinforced edges to handle wear and resist tearing. It should be lightweight, water-resistant, and easy to pack so you’re not lugging around extra weight.

Size And Fit

Aim for a tarp that’s about 2–3 inches smaller than your tent’s footprint on each side to prevent water from pooling along the edges during rain. If the tarp sticks out, runoff can collect underneath and soak your shelter. Measure your tent floor carefully-most standard tents fit tarps sized 7.5 x 9.5 feet to 8 x 10 feet. Choose one within this range for reliable ground protection without excess. A tarp too large increases the risk of water gathering along the sides, especially on uneven terrain. Models weighing between 0.6 and 2.3 pounds balance light carry with coverage, fitting common tent dimensions without adding bulk. You don’t need extra material-just full floor coverage, trimmed slightly inward. This cut keeps seams dry and minimizes wear. Get the size right, and you’ll stay drier, sleep better, and reduce long-term fabric stress-all without overpacking.

Material Durability

While thickness isn’t everything, picking a tarp with 8 to 9 mil polyethylene means you’re getting noticeably better resistance to punctures and tears than thinner 5.5 mil options. You’ll also want reinforced edges-look for heat-sealed seams or enclosed nylon ropes to stop fraying when the tarp’s under constant strain. Rip-stop technology helps, too; its tight weave keeps small rips from spreading across the material. If you’re out for days under direct sun, choose UV-treated polyethylene so the fabric won’t weaken or become brittle over time. Metal grommets matter just as much: ones set in reinforced corners with plastic patches handle tension better and reduce stress when you’re tying down the tarp. These features don’t just add durability-they make the tarp last longer under real camping wear and tear.

Water Resistance

Thicker materials handle rain better, and a tarp of at least 5.5 mil polyethylene stands up to extended downpours without leaking. You need that thickness if you’re camping in wet climates or during rainy seasons. Heat-sealed seams and welded edges keep water out-stitch holes in stitched tarps can leak over time, so avoid them when waterproofing matters. Dual-layer polyethylene with lamination on both sides blocks moisture more effectively than single-layer options. UV protection built into the material slows sun damage, which helps the tarp stay waterproof after repeated exposure to sunlight. Reinforced edges and corner patches keep the shape tight, so water doesn’t pool and seep through stressed areas. A loose or sagging tarp fails faster in heavy rain. Choose one with strong, sealed construction throughout-you’ll stay drier and avoid ground moisture soaking into your tent.

Weight And Portability

A lightweight tarp under 1 pound makes a clear difference when you’re covering miles on foot-every ounce counts during backpacking, and a tarp that packs down to less than 16 x 14 inches fits easily into your pack without sacrificing precious space. You’ll want materials like ripstop polyethylene or 190T polyester-they’re light but tough enough for trail use. Smaller tarps, under 7 by 9 feet, usually weigh less than 2 pounds and are easier to carry on long hikes. Just keep in mind that heavier mil ratings, like 8 or 9 mil, add durability but also bulk and weight. That extra thickness cuts down on packability, so it’s a trade-off. If you’re prioritizing portability, stick with lighter, compact designs. You get less material, sure, but you’ll appreciate the savings in weight and space when you’re on the move. Choose based on your load tolerance and trip length-lightweight works best when you’re hiking far and fast.

Reinforced Edges

If you’re anchoring your tarp tightly or facing rough terrain, reinforced edges make a real difference in how well your tarp holds up. You’ll want heat-sealed or double-stitched edges-they resist fraying and handle tension better than single-stitched seams. Some tarps include an internal nylon rope within the hem, giving you extra strength when winds pick up and preventing the edges from pulling apart. Look for binding made with tougher materials or added polyethylene layers, since they shield against abrasion when you’re setting up on gravel or rocky ground. Reinforced edges stop small tears from spreading from the perimeter, keeping the tarp intact over time. UV protection is often built into these edges, so sun exposure won’t weaken them as quickly. You get longer lifespan and reliability without paying for unnecessary extras. It’s a practical upgrade that matters in real conditions.

Grommet Placement

Every 18 to 24 inches, well-placed grommets give you solid anchor points that hold the tarp tight when the wind kicks up. You’ll want consistent spacing-like every 36 inches-so ties stay predictable and tension spreads evenly. Gaps wider than 24 inches can leave sections loose, flapping or lifting in gusts. Reinforced corners with grommets handle stress better, reducing tear risks when stakes pull tight. Rust-resistant metal grommets last longer, especially in damp conditions where corrosion weakens connections. You’ll also need multiple grommets per side to adjust your setup-pitching the tarp low for wind, or raising a side for airflow and runoff. Flexible configurations depend on having enough anchor points in the right spots. Spacing and reinforcement aren’t just details-they’re what keep your shelter intact when weather shifts fast.

Color Selection

Why deal with a sweltering sleep surface when the sun’s beating down? Choose a light-colored tarp-like silver or white-to reflect sunlight and UV rays, keeping the ground beneath your tent cooler. Dark tarps, such as black or deep green, absorb heat and raise surface temperatures, making them risky in hot weather. But they help retain warmth on cold nights when extra heat absorption’s useful. If stealth matters, go for camouflage or earth-tone tarps; they blend into natural surroundings and reduce visibility. For safety in busy or stormy environments, pick bright colors like orange or blue-they stand out, helping others spot your site fast. Dual-sided tarps give you flexibility: use the silver side to reflect heat or flip to the darker side to absorb it, depending on conditions. Match the color to your climate and campsite needs-it’s a small choice that directly affects comfort and safety.

Frequently Asked Questions

Can I Use a Tarp as a Groundsheet for Backpacking?

Yes, you can use a tarp as a groundsheet for backpacking, but choose carefully. A silnylon or Dyneema tarp works if it’s lightweight and sized slightly smaller than your tent to prevent water pooling. It won’t last as long as a dedicated footprint, but it cuts weight and cost. Watch for punctures-tarp material’s thinner than most tent floors. Pair it with a pad for insulation and comfort. You’re trading durability for versatility, so patch it early and avoid rough terrain.

How Do I Clean a Dirty Camping Tarp?

You clean a dirty camping tarp by rinsing it with water, then scrubbing lightly with a sponge and mild soap-no harsh chemicals. Rinse thoroughly to remove residue. Dirt and grime wear down fabric over time, so regular cleaning extends life. Never use a washing machine; it damages coatings. Dry it completely before storing to prevent mold. For stubborn stains, use a non-abrasive cleaner, but test on a small area first.

Are Tarps Safe for Use on Rocky Terrain?

Yes, tarps are safe on rocky terrain if you use a durable material like polyethylene or heavy-duty nylon with high tear resistance. You’ll need at least 600D fabric or coated poly with a high denier rating to withstand sharp rocks. Without ground reinforcement, punctures happen fast. Pair the tarp with a footprint or add extra stakes to limit shifting. Smooth out wrinkles to prevent water pooling. Cheaper tarps tear within days under these conditions-invest in durability.

Do Colored Tarps Fade Faster in Sunlight?

Yes, colored tarps fade faster in sunlight than black or silver ones because dyes break down under UV exposure. You’ll notice reds and blues degrading sooner, especially cheap polyethylene models. UV inhibitors help, but they don’t stop fading entirely. Darker colors absorb more heat, stressing the material. If you want longevity, choose tarps with reinforced UV coating and opt for lighter or neutral shades-they hold up better over seasons of use.

Can I Cut a Tarp to a Custom Size?

Yes, you can cut a tarp to a custom size, but you’ll risk fraying and weakened edges. Once cut, the material no longer has factory-reinforced borders, so stress points develop faster. Seal cut edges with heat or tape to slow degradation. Smaller tarps weigh less and fit tighter spaces, but you lose coverage flexibility. Measure carefully-oversizing is easier to trim than fixing a piece too small. Choose a durable, tightly woven poly or nylon to minimize unraveling after cutting.