Best Steel Tarps for Flatbed (2026): Sizes, Weights, and What to Buy

Sooner or later every new flatbed driver hears the same thing: "Get yourself a good set of steel tarps." Twenty-some years ago I did exactly that. This is the page I wish somebody had handed me first: what the sizes mean, what the tarps actually weigh, what they cost today, and which one fits the freight you haul.

Every size, weight, and price below was read off the seller's own product page on September 24, 2026, and each row links to that page so you can check it yourself. Where a seller didn't list something, the cell says "Not listed." I did not fill gaps from memory. Prices move, so treat them as that day's number.

The short versionWhich Steel Tarp to Buy

If you want the answer without the reading: buy an 18 oz, 16' x 27' steel tarp with a 4-foot drop as your first tarp, and buy it twice. That covers the front and the back of almost any coil, plate, rebar, or structural load on an 8-foot-wide deck. Add a shorter middle tarp (16' x 20' or 16' x 24') when you start pulling full-length loads. Step up to a 6-foot or 8-foot drop only when your freight is regularly taller than 3 feet on the deck. Skip the 14 oz "lightweight" versions for steel. They are for lumber, and I'll explain why below.

ComparedSteel Tarp Comparison Table (September 2026)

Sixteen tarps from Tarpstop, US Cargo Control, Carolina Tarps, and Sigman (sold through MyTarp). Sorted by seller, then by size. "Drop" is how far the tarp hangs down each side of an 8-foot deck.

Notes: Tarpstop's own-brand tarps are made in Ohio and Indiana; its "Import" line and the Sigman tarps are imported. US Cargo Control does not list D-ring counts on its listing page. The US Cargo Control 24' x 18' lightweight tarp is titled 14 oz but its web address says 18 oz; I've reported the listing title. Mytee Products' pages could not be read by the tool I used on the day I checked, so Mytee is not in the table, although its 16' x 27' 18 oz tarp listed at about 65 lb when I checked it in August 2026.

SizingHow to Size a Steel Tarp: 16x27, 20x27, 24x27

Steel tarps are sold by width and length, but the number that matters is the drop: how far the tarp hangs down each side of the trailer. A flatbed deck is 8 feet wide, so the math is simple. Width equals 8 feet plus twice the drop.

• 16' wide = 4-foot drop. The standard steel tarp. Covers flat steel, plate, rebar, pipe, and most coils sitting on coil racks.
• 20' wide = 6-foot drop. For loads 3 to 5 feet tall: stacked bundles, larger coils, crated machinery.
• 24' wide = 8-foot drop. Tall loads, and the size lumber tarps usually come in. On low steel it just drags on the ground and collects the road.

To pick the drop, measure the tallest point of the load, then add about a foot so the tarp reaches the rub rail and you have something to hook a rubber strap to. A load that stands 30 inches above the deck is a 4-foot-drop job. A load that stands 5 feet is a 6-foot-drop job at the least. And measure it, don't eyeball it. The same tape that tells you your drop tells you whether you clear the bridges on your route. I learned that the hard way on a New Jersey overpass, and wrote the whole story in my guide to flatbed load height.

Length is about the trailer, not the load. Twenty-seven feet is the standard because two 27-foot tarps overlap to cover a 48-foot deck with a few feet to spare. On a 53-foot trailer, two 27s fall short by a foot or two with no overlap, which is why most drivers run two 27-foot ends and a shorter middle tarp (18, 20, or 24 feet long). Overlap the middle tarp under the front tarp and over the rear tarp so the wind can't get under a seam at highway speed.

Shorter tarps have a place too. A 12' x 27' with a 2-foot drop (Carolina Tarps sells one at 56 pounds) is plenty for a single layer of plate or a low rebar load, and it's twenty pounds lighter than a 16-footer. If all you ever haul is flat, low steel, that's worth considering.

By the freightHow to Choose by Load Type

Steel coils. Coils are the reason steel tarps are built the way they are. The edges of a coil will cut through a light tarp in one trip. Run 18 oz, 4-foot drop for coils under about 3 feet tall on their racks, 6-foot drop for the big ones. Put a moving blanket or coil mat over the top edge before the tarp goes on. Some sellers also make a square 16' x 16' "coil tarp" for a single-coil load; Sigman's is in the table's source list. And remember the tarp is the last thing on: securing the coil comes first, and the whole method is in my guide to securing steel coils on a flatbed.

Lumber, plywood, and packaged goods. Don't use a steel tarp. Lumber stands tall and square, so it needs an 8-foot drop and an end flap to close off the front and back of the stack, and it doesn't cut fabric, so 14 oz is fine and saves your back. That is a lumber tarp, a different animal, and I cover the sizes and sets worth buying in my lumber tarps guide. The reverse is also true: a lumber tarp on a coil load is a torn lumber tarp.

Machinery. Odd shapes, sharp brackets, and hydraulic cylinders sticking up. Use a heavy tarp with a deep drop, or a purpose-made machinery tarp with three or four rows of D-rings so you can cinch it tight around the shape. Carolina Tarps lists 24' x 24' and 30' x 30' machinery tarps in 15 oz ripstop. Whatever tarp you use, the machine underneath gets chained, never strapped; my chains vs. straps guide walks through why.

Flat steel, plate, pipe, and rebar. The easiest tarp job on a flatbed and the place a 4-foot drop (or even 2-foot) shines. Cover the sharp ends of rebar and pipe with edge protection before the tarp goes over, or the tarp will show you the ends of every bar by the second stop.

The weight questionLightweight (14 oz) vs. Heavy Duty (18 oz)

The number on the tarp is ounces per square yard of fabric. 18 oz is the heavy-duty standard; 14 oz is the "lightweight" or "superlight" line every seller now offers. Look at the table and the weight difference is real: US Cargo Control's 16' x 27' is 70 pounds in 18 oz and 56 pounds in 14 oz. Fourteen pounds per tarp, forty-plus pounds across a three-tarp set, every single load.

Here is the honest trade. The 14 oz tarp is exactly what tears when you can least afford it. The whole reason you tarp steel is to protect freight that punishes fabric, and the lighter fabric gives up the thing that makes a steel tarp a steel tarp. The thirty or forty dollars you might save shows up later as a ripped tarp and a wet coil. On steel, buy the 18 oz. (Look at the table again and you'll notice the 14 oz versions aren't even always cheaper.)

Where 14 oz makes sense is lumber and packaged freight, where the load has no edges and the tarp is bigger. That's the right place to save the weight, and it's the reason lumber tarps come in 14 oz to begin with.

What to look atD-Rings, Seams, Flaps, and Cold Crack

D-rings. The rows of rings on the sides are where your rubber tarp straps hook. Two rows per long side is standard, spaced every 24 inches, with one row about 2 feet up and one about 4 feet up so you can strap at the rub rail or higher when the load is short. Tarpstop and Carolina Tarps both spell this out on their pages; US Cargo Control doesn't list it. If a listing doesn't say, ask before you buy. A steel tarp with only grommets and no D-rings is a pain to strap in the wind.

Seams. You want heat-sealed or welded seams, not sewn, and hems double-stitched over 2-inch webbing. Every tarp in the table claims that construction. Box-stitched D-rings with a protective flap under them last longer than rings sewn straight to the fabric.

End flaps. Steel tarps usually have no flap; that's the difference from a lumber tarp. Tarpstop sells its flap as a $35 add-on and Carolina Tarps includes an 8' x 4' flap on its 16' x 27'. A flap on the rear tarp is nice for closing off the back of a coil load. On the front tarp it mostly just catches wind.

Cold crack. Vinyl gets stiff and can crack when it's folded cold. Tarpstop rates its tarps to -40°F; Carolina Tarps to -30°C (about -22°F). If you run the northern lanes in January, that rating is not a detail.

The honest costWhat a Set Costs

Two 18 oz 16' x 27' ends plus a 16' x 20' or 16' x 24' middle runs between roughly $700 and $1,000 at the September 2026 prices in the table, depending on whether you buy import or USA-made and whether the seller is running a sale. Bought cheap and cared for, that set will outlast a lot of the trucks you'll drive, same as your Grade 70 chain and binders. A new driver should hear that number before they get into flatbed thinking a tarp is a hundred-dollar item. It isn't. It's working equipment.

Twenty years of itSteel Tarps Earn Their Name, and Every Pound Counts

There's a reason they're called steel tarps. They take abuse: sharp corners, wind, rain, snow, sun. Buy a quality set and take care of them and they'll last years. That's the love side of the love-hate relationship every flatbed driver has with them.

The hate side is the weight. Every time you pull that tarp out of the box, drag it across the trailer, and throw it over a load, you're lifting 70 pounds. Again and again. One day doesn't hurt. One year probably doesn't. Twenty years is a different story, and your back keeps the score. When you're new, strength makes up for a lot. When you've been at it a while, you learn to be smart instead of tough.

TarpingGetting It On and Keeping It On

Unfold on top of the load, not on the ground, and let gravity pull the drop down the sides. Work from the front of the trailer back so the seams shed wind. Hook rubber tarp straps to the D-rings and pull them to the rub rail; use the lower row of rings on short loads so the tarp is tight against the freight, not flapping a foot below it. A tarp that flaps at 70 mph is a tarp that's wearing itself out and beating the paint off your freight.

Under the tarp, the freight still has to be tied down right. Tarps protect; they don't secure. Coils and machinery get chain. Bundled steel and anything with a finish you don't want to mar can take ratchet straps with corner protectors. Whichever you're running, the tie-downs go on and get tightened before the tarp does, and you re-check them at your first stop. The tarp hides the straps, so the first stop is the only time you'll see one that's gone slack before an inspector does.

Wind is the enemy of tarping. Tarp with the nose of the truck into the wind if you can, and if the day is bad, ask another driver for a hand. Most flatbed drivers will help because we've all fought a tarp in a 30 mph crosswind. And plan the day: if the truck GPS is showing a shipper out on the plains with nothing to block the wind, get there early, before it picks up.

Habits that pay offMaking a Set Last

• Fold your tarps neatly after every load. A tarp balled up in the box gets creased and cracks along the creases.
• Repair small tears before they become big ones. Vinyl patch kits are cheap; a new tarp is not.
• Slip a blanket under the tarp anywhere it rides a sharp edge.
• Don't drag them across rough pavement.
• Store them dry whenever possible. A wet tarp folded for a week comes out mildewed.
• Keep the rubber straps out of the sun when they're not in use; they rot faster than the tarp does.