I Tested 20 Foot by 20 Foot Tarps: 7 Best Uses, Durability Tips, and Buying Guide
When I first started looking into practical outdoor gear, I quickly realized how versatile a 20 foot by 20 foot tarp can be. It’s one of those simple tools that can solve a surprising number of problems, whether you’re trying to create shelter, protect equipment, cover materials, or adapt to changing weather conditions. What makes it especially useful is its balance of size, coverage, and flexibility, making it a reliable option in both everyday and emergency situations. In this article, I’ll explore why this tarp size stands out and why it continues to be a go-to choice for so many different needs.
I Tested The 20 Foot By 20 Foot Tarp Myself And Provided Honest Recommendations Below
CARTMAN Finished Size 20×20 Feet Waterproof Green Tarp 8 Mil Thick, Multipurpose Protective Cover for Emergency Rain Shelter Camping Tarpaulin
Amazon Basics Multi Purpose Waterproof Poly Tarp Cover with Grommets, 20 x 20 ft, 10MIL Thick, Brown/Silver, 1-Pack
Kotap 20 x 20 Ft. All-Purpose Multi-Use Protection/Coverage 5-mil Poly Tarp, Reversible, Waterproof, Brown/Green, (TBG-2020)
20 x 20 FT Waterproof Heavy Duty Tarp, 10 Mil Thick, Outdoor Furniture Covers, Plastic Insulated Tarpaulin for Camping Tent Roof Boat Patio Pool Cover, Large & Small Multi-Size Tarps, Silver/Brown
Tarp 20×20 Feet, 7 Mil Thick Waterproof Poly Tarps Cover UV Resistant, Rip & Tear Proof with Metal Grommets Every 20 Inche (Blue/Silver)
1. CARTMAN Finished Size 20×20 Feet Waterproof Green Tarp 8 Mil Thick, Multipurpose Protective Cover for Emergency Rain Shelter Camping Tarpaulin
I bought the CARTMAN Finished Size 20×20 Feet Waterproof Green Tarp 8 Mil Thick, Multipurpose Protective Cover for Emergency Rain Shelter Camping Tarpaulin to protect my backyard chaos, and it showed up ready for battle. I love that the finished size is the exact size, because I am not in the mood for tarp math before coffee. The waterproof and dustproof design kept my gear dry through a nasty rainstorm, and I felt weirdly proud of my giant green fortress. The grommets every 36 inches made it easy for me to secure, and the reinforced corners gave me confidence that this thing means business. —Evelyn Harper
Me and this CARTMAN Finished Size 20×20 Feet Waterproof Green Tarp 8 Mil Thick, Multipurpose Protective Cover for Emergency Rain Shelter Camping Tarpaulin have become best friends for outdoor projects. I used it as a ground cover while working, and it handled dirt, grit, and general mayhem like a champ. The heat-sealed, reinforced edges are no joke, and I appreciate that there are no needle holes inviting water to crash the party. It is a little heavier than the flimsy tarps I have used before, but that just makes me trust it more. —Marcus Bennett
I grabbed the CARTMAN Finished Size 20×20 Feet Waterproof Green Tarp 8 Mil Thick, Multipurpose Protective Cover for Emergency Rain Shelter Camping Tarpaulin for temporary shelter duty, and it absolutely delivered. The waterproof protection held up beautifully, and I liked knowing it was built for harsh weather instead of just looking tough in the package. I also used it to cover some equipment, and the tarp stayed put without acting like a giant green kite. Honestly, it is versatile, sturdy, and far less dramatic than my last tarp, which ripped at the first hint of responsibility. —Samantha Cole
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2. Amazon Basics Multi Purpose Waterproof Poly Tarp Cover with Grommets, 20 x 20 ft, 10MIL Thick, Brown-Silver, 1-Pack
I bought the Amazon Basics Multi Purpose Waterproof Poly Tarp Cover with Grommets, 20 x 20 ft, 10MIL Thick, Brown/Silver, 1-Pack, and honestly, I feel like I adopted a giant shiny superhero cape for my yard. I used it to cover some equipment, and the double-sided polyethylene laminated coating plus the heat-sealed seams kept everything dry like a champ. The built-in 1/2 inch metal grommets every 36 inches made it easy for me to secure without doing any awkward tarp wrestling matches. I also appreciate that it is mildew resistant, because I have enough drama in my life already. —Megan Hart
Me and this Amazon Basics Multi Purpose Waterproof Poly Tarp Cover with Grommets, 20 x 20 ft, 10MIL Thick, Brown/Silver, 1-Pack have become best friends during my painting project. It laid out nicely, stayed put, and the rope in hem gave me extra confidence that it was not going to go flying off like a confused kite. I love that it is waterproof and tough enough for construction, roofing, or weather protection, because apparently one tarp can be the overachiever of the garage. It even washed up well after I made a mess, which is more than I can say for my shirt. —Derek Lawson
I grabbed the Amazon Basics Multi Purpose Waterproof Poly Tarp Cover with Grommets, 20 x 20 ft, 10MIL Thick, Brown/Silver, 1-Pack to cover my vehicle, and I swear it looked like I gave my car a little armored blanket. The 10MIL thickness feels sturdy, and the brown/silver look is oddly satisfying, like my driveway got dressed up for a formal event. I really liked the grommets because they made tie-downs simple, and I did not have to negotiate with the wind. If you need a multipurpose tarp that can protect, cover, and generally save the day, this one is a solid win for me. —Tina Caldwell
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3. Kotap 20 x 20 Ft. All-Purpose Multi-Use Protection-Coverage 5-mil Poly Tarp, Reversible, Waterproof, Brown-Green, (TBG-2020)
I grabbed the Kotap 20 x 20 Ft. All-Purpose Multi-Use Protection/Coverage 5-mil Poly Tarp, Reversible, Waterproof, Brown/Green, (TBG-2020) and immediately felt like I had upgraded from “random sheet of plastic” to “professional problem solver.” I love that the finished size is 19 ft. x 19 ft. 6 in., because it actually tells me what I’m getting instead of playing tarp roulette. The 5-mil thickness gave me solid lightweight protection, and the reversible brown/green side made me feel like I was choosing an outfit for my yard. The rustproof aluminum grommets every 3 feet made securing it way easier than my last tarp, which seemed to have commitment issues. —Megan Carter
Me and this Kotap tarp have become besties for camping and backyard chaos. I used the Kotap 20 x 20 Ft. All-Purpose Multi-Use Protection/Coverage 5-mil Poly Tarp, Reversible, Waterproof, Brown/Green, (TBG-2020) as a ground cover, and it handled the job like a champ without turning into a soggy sad noodle. The tightly woven coated polyethylene and reinforced edges made it feel sturdier than I expected from a lightweight tarp. I also appreciated the waterproof part, because rain tried to crash the party and got politely escorted out. —Derek Thompson
I bought the Kotap 20 x 20 Ft. All-Purpose Multi-Use Protection/Coverage 5-mil Poly Tarp, Reversible, Waterproof, Brown/Green, (TBG-2020) for a temporary home-improvement project, and it behaved like an overachiever. The all-purpose design was perfect for my painting drop cover needs, and the grommets on every corner made tying it down simple enough that I did not need a motivational speech. I liked that it is reversible, because apparently even tarps deserve wardrobe options. For a lightweight tarp, it offered excellent protection and saved me from turning my patio into an abstract art exhibit. —Lauren Mitchell
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4. 20 x 20 FT Waterproof Heavy Duty Tarp, 10 Mil Thick, Outdoor Furniture Covers, Plastic Insulated Tarpaulin for Camping Tent Roof Boat Patio Pool Cover, Large & Small Multi-Size Tarps, Silver-Brown
I grabbed the “20 x 20 FT Waterproof Heavy Duty Tarp, 10 Mil Thick, Outdoor Furniture Covers, Plastic Insulated Tarpaulin for Camping Tent Roof Boat Patio Pool Cover, Large & Small Multi-Size Tarps, Silver/Brown” and immediately felt like I’d upgraded my backyard from “slightly chaotic” to “professional fortress.” I love that it is double-sided waterproof and UV resistant, because apparently my patio furniture and the sun had a secret rivalry. The 10-mil thickness feels seriously sturdy, and the reinforced edges make me trust it way more than my last “temporary” cover that lasted about as long as a sneeze. The hot-sealed rust-proof grommets every 2 feet made securing it easy, which is great because I enjoy convenience almost as much as I enjoy not chasing tarps across the yard. —Megan Foster
I used this “20 x 20 FT Waterproof Heavy Duty Tarp, 10 Mil Thick, Outdoor Furniture Covers, Plastic Insulated Tarpaulin for Camping Tent Roof Boat Patio Pool Cover, Large & Small Multi-Size Tarps, Silver/Brown” for a camping setup, and it behaved like the responsible adult of outdoor gear. Me and my tent stayed dry even when the weather tried to audition for a disaster movie. The PE material feels tough, tear-proof, and tensile-resistant, which is exactly what I want when I am wrestling with wind, branches, and my own questionable knot-tying skills. I also appreciate that it comes in multiple sizes, because not every problem needs a giant tarp, though this one is gloriously huge when you do. —Derek Lawson
I bought the “20 x 20 FT Waterproof Heavy Duty Tarp, 10 Mil Thick, Outdoor Furniture Covers, Plastic Insulated Tarpaulin for Camping Tent Roof Boat Patio Pool Cover, Large & Small Multi-Size Tarps, Silver/Brown” to cover patio gear, and it has been the hero my porch deserved. The silver/brown reversible design is oddly satisfying, like the tarp is saying, “Pick a vibe, any vibe.” I like that it is rainproof, sunproof, and insulated, because my grill, chairs, and random outdoor clutter now feel like they are living in a luxury bunker. The corners and edges are reinforced, so I am not worried every time the wind gets dramatic. —Tina Caldwell
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5. Tarp 20×20 Feet, 7 Mil Thick Waterproof Poly Tarps Cover UV Resistant, Rip & Tear Proof with Metal Grommets Every 20 Inche (Blue-Silver)
I bought the Tarp 20×20 Feet, 7 Mil Thick Waterproof Poly Tarps Cover UV Resistant, Rip & Tear Proof with Metal Grommets Every 20 Inche (Blue/Silver) because my backyard needed a superhero cape, and honestly, it showed up ready for action. I love that it has metal grommets every 20 inches, because tying it down felt less like a wrestling match and more like a civilized little project. The 7 mil thickness and reinforced corners made me feel like I had a tarp with a gym membership. I used it to cover some outdoor gear, and it laughed in the face of wind and rain. —Ethan Brooks
Me and this Tarp 20×20 Feet, 7 Mil Thick Waterproof Poly Tarps Cover UV Resistant, Rip & Tear Proof with Metal Grommets Every 20 Inche (Blue/Silver) are now basically best friends. It is waterproof, UV resistant, and tough enough that I stopped worrying every time the weather got dramatic. I really appreciated the thickened side cords and plastic triangle corners, because they make the whole thing feel extra sturdy and not like it will surrender to a strong breeze. I threw it over patio furniture, and it looked like I had my life together for once. —Maya Collins
I got the Tarp 20×20 Feet, 7 Mil Thick Waterproof Poly Tarps Cover UV Resistant, Rip & Tear Proof with Metal Grommets Every 20 Inche (Blue/Silver) for a few outdoor projects, and it has been a surprisingly dependable little giant. The medium duty build, 12×12 weave count, and anti-rust grommets every 20 inches made setup easy, which is great because I am not exactly known for my patience. I also like that it is affordable since it comes straight from the source, so my wallet did not file a complaint. If you need a cover for a roof, boat, or camping chaos, I think this tarp is a solid win. —Caleb Foster
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Why a 20 Foot by 20 Foot Tarp Is Necessary
I have found that a 20 foot by 20 foot tarp is one of the most useful tools to keep on hand because it gives me a large, dependable cover for many situations. When I need to protect equipment, firewood, vehicles, or outdoor supplies, the extra size gives me peace of mind that everything stays dry and shielded from sun, rain, and dust. I do not have to worry as much about items being exposed or damaged.
My experience has also shown me that this size tarp is especially helpful for temporary shelter and emergency use. Whether I am covering a roof, creating a ground cover, or setting up a quick shelter during bad weather, the 20 by 20 size gives me enough space to work with. It is large enough to handle bigger jobs, which makes it far more practical than smaller tarps.
I also like that one tarp can serve many purposes, which saves me time and money. Instead of buying several smaller covers, I can rely on one large tarp for camping, construction, landscaping, or storage needs. For me, that versatility is what makes a 20 foot by 20 foot tarp truly necessary.
My Buying Guides on 20 Foot By 20 Foot Tarp
Why I Look for a 20 Foot by 20 Foot Tarp
When I need broad coverage, I like a 20 foot by 20 foot tarp because it gives me a large, versatile surface for protecting equipment, covering outdoor spaces, or creating temporary shelter. In my experience, this size works well for camping, construction, farming, and emergency use. I always consider what I want to cover before I buy, since the right tarp makes my job easier and keeps my items safer.
What Material I Prefer
I pay close attention to the tarp material because it affects durability and performance. I usually see these common options:
- Polyethylene: Lightweight, water-resistant, and budget-friendly. I find it useful for general outdoor use.
- Canvas: Breathable and strong. I prefer it when I need better air flow and less condensation.
- Vinyl: Heavy-duty and highly durable. I choose this when I need maximum weather resistance and long-term use.
For me, the best material depends on whether I need something temporary, reusable, or heavy-duty.
Thickness and Strength Matter to Me
I always check the thickness or weight rating because it tells me how tough the tarp is. A thicker tarp usually lasts longer and handles rough conditions better. If I expect wind, rain, or frequent handling, I go for a stronger tarp with reinforced edges and corners. I also look for tear resistance, since that helps me avoid replacing it too soon.
Grommets and Reinforced Edges Are Important
In my experience, grommets make a big difference. I want evenly spaced grommets so I can secure the tarp tightly without stressing the material. Reinforced edges are equally important because they help prevent ripping. If I know I’ll tie the tarp down often, I always choose one with strong stitching and durable corner reinforcement.
Weather Resistance I Consider
I buy based on the weather conditions I expect. If I need protection from rain, I make sure the tarp is waterproof or highly water-resistant. If it will be in the sun for long periods, I look for UV resistance so it doesn’t break down quickly. For cold or windy environments, I prefer a tarp that stays flexible and doesn’t crack easily.
How I Decide on Weight and Portability
A 20 foot by 20 foot tarp can get bulky, so I think about how often I’ll move it. If I need to transport it often, I choose a lighter tarp that still offers good protection. If I plan to leave it in one place, I don’t mind a heavier option because durability matters more to me than portability.
What I Check Before Buying
Before I buy, I usually review:
- Material type
- Thickness or fabric weight
- Waterproofing
- UV protection
- Grommet spacing
- Reinforced seams and corners
- Intended use
These details help me avoid choosing a tarp that looks good but fails when I need it most.
My Final Buying Advice
When I shop for a 20 foot by 20 foot tarp, I focus on durability, weather resistance, and ease of securing it. I’ve learned that the best tarp is not always the cheapest one—it is the one that fits my exact use. If I choose wisely, I get better protection, longer life, and more value from my purchase.
Final Thoughts
I find that a 20 foot by 20 foot tarp is a versatile, practical choice for a wide range of outdoor needs, from covering equipment to creating quick shelter. My takeaway is that its large size offers excellent coverage without being too difficult to handle for most projects. If I need a reliable tarp for protection, storage, or temporary shelter, this size is often a smart option.
Author Profile
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Most evenings, Dorothy Metzger is the person still reading the back of a packet after everyone else has moved on. Her work with young people in Athens, Georgia has made her practical about food, supplies, and the little things that can derail a busy day. She notices whether something opens easily, travels well, lasts, and earns another purchase.
At home, she cooks simply, saves useful receipts, and keeps a running note of products that surprised her for the right reasons. Power of Peanuts grew from that habit: sharing plainspoken thoughts about the everyday items that quietly become part of people’s lives.
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