Ask ten homeowners to guess how heavy a load of old shingles is and most of them will lowball it by half. I don't blame them. A bundle of asphalt shingles doesn't look like much sitting on a pallet at the supply house. But strip an entire roof down to the deck, pile it in a container, and the numbers get real in a hurry. Roofing tear-off is the one job where guessing wrong on dumpster size costs you money twice: once when you rent a box that's too small and need a second, and again when you overload a big box and eat overage fees.
I've been dropping roll-offs on driveways across Arlington and the rest of Northern Virginia for years, and roofing debris is its own animal. It's dense, it's abrasive, and it fills a container by weight long before it fills it by volume. So let's walk through how to size this thing properly, run the actual weight math, and cover the stuff that trips up first-time DIY roofers and even a few busy contractors.
Why roofing debris is so heavy
Asphalt shingles are basically fiberglass mat soaked in asphalt and coated with mineral granules. That granule layer is crushed rock. When you tear a roof off, you're not just hauling away a thin skin of material. You're hauling rock, tar, old felt paper, drip edge, sometimes rotted decking, and a surprising amount of grit that shakes loose in the process.
The key number every roofer works in is the square. One roofing square equals 100 square feet of roof surface. Shingles are sold and estimated by the square, and a typical architectural (dimensional) shingle roof runs about three bundles to a square. Here's where the weight sneaks up on you.
The shingle weight math
Let me give you the rules of thumb I use on site, then we'll do a real example.
- 3-tab shingles: roughly 230 to 250 lbs per square (single layer).
- Architectural / dimensional shingles: roughly 400 to 430 lbs per square (single layer). These are heavier because they're thicker and laminated.
- Add for tear-off debris: once you factor in felt, nails, and the fact that old shingles absorb moisture, I bump single-layer estimates up another 10 to 15 percent.
Now the example. Say you've got a standard Arlington colonial with about 2,000 square feet of roof surface. That's 20 squares. If it's a single layer of architectural shingles:
20 squares x 400 lbs = 8,000 lbs, or roughly 4 tons just in shingles. Add felt and grit and you're closer to 4.5 tons on the ground.
Here's the part people miss. A 20-yard dumpster has plenty of room by volume for that roof. But most roll-off rentals in this area come with a weight allowance in the ballpark of 2 to 4 tons included, depending on the size and the hauler. Blow past that and you're paying per-ton overage. So the container that looks big enough might actually be the wrong call once the scale ticket comes back.
Single layer vs. multi-layer tear-offs
This is the single biggest factor in sizing, and it's the one homeowners forget to mention when they call. Northern Virginia has a lot of housing stock from the fifties through the eighties, and plenty of those roofs have been re-covered rather than torn off. Code around here generally allows up to two layers before a full tear-off is required, so it's common to find two layers, and occasionally three on older homes.
Every extra layer roughly doubles your weight. That 20-square roof at 4 tons for one layer becomes 8 tons for two layers. That is not a subtle difference. It's the difference between one 15-yard box and needing a heavier plan entirely.
Before you pull a permit or order a box, go up in the attic or pop a shingle at the eave and count the layers. If you see two courses of shingles stacked, or a layer of shingle over a layer of old wood shake, tell whoever you're renting from. It changes everything about how we spec the job.
The 10 to 15 yard sweet spot
For most residential roofing work in Arlington, the 10 to 15 yard range is where you want to be, and it's not because of volume. It's because of the low walls and the weight rating.
Smaller roll-offs are built with lower sides, which matters more than you'd think when you're pitching heavy, awkward tear-off from a roof. You're not carrying shingles down a ladder one bundle at a time. You're sliding them off the roof or tossing them, and a 12 to 15 yard box with 4-foot walls is far easier to hit and load than a tall 30-yard container. A lower box also sits lower to the ground, so the toss height is friendlier and less gets scattered across the yard.
Just as important, the smaller boxes are rated to take the concentrated weight of roofing without the hauler worrying about axle limits on the truck. Dense material like shingles, dirt, or concrete belongs in a small, heavy-duty box, not spread thin across a giant one. For a straightforward single-layer roof up to about 20 squares, a 15-yard dumpster is usually the right tool. For smaller roofs, garages, or a tight tonnage budget, a 10-yard does the job. If you're dealing with two layers or a large roof, that's a conversation about either a bigger tonnage allowance or a swap, which we'll get to.
Here's my quick sizing guide for a single layer of architectural shingles:
- Up to 12 squares: 10-yard box.
- 12 to 22 squares: 15-yard box.
- Two layers, or 22+ squares: plan for a swap or a higher weight allowance. Don't try to cram it.
If you're not sure what you've got, call and describe the roof. We do this math every week. If you want to talk it through, our roofing dumpster rental page has more detail, or just grab the phone.
Not sure how many layers or squares you're working with? Call Arlington Dumpster Rental Guys at (571) 583-6105 and we'll size it with you in five minutes.
Driveway placement on tight NoVA lots
Arlington driveways are not generous. A lot of them are short, sloped, and flanked by mature trees or a neighbor's fence a few feet off the line. Placement matters more here than in a lot of the country, so let's cover it.
First, clear the drop zone. The delivery truck needs a straight, roughly 60-foot run to set a roll-off, and about 23 feet of vertical clearance to raise the bed. Low branches, carports, and power lines running to the house are the usual snags. Walk the path before delivery day and flag anything overhead.
Second, protect the surface. Asphalt driveways here soften in summer heat, and the steel rails or wheels of a loaded box can dent or gouge them. We put boards down under the rollers on request, and I'd rather you ask than find a scar under the box later. Concrete is more forgiving but not immune.
Third, think about the toss line. You want the open end of the box under or near the eave you're tearing off, so debris travels down and in rather than out into the yard. On a tight lot, sometimes the smart move is a smaller box placed precisely under the work rather than a big one shoved wherever it'll fit. Position beats size on a cramped Arlington driveway almost every time.
If your driveway simply won't take a container, the street is an option, but Arlington County and most NoVA jurisdictions require a permit for a roll-off in the public right-of-way. Sort that out before delivery day so you're not scrambling.
Scheduling swaps on bigger jobs
For a two-layer tear-off or a big roof, the cleanest approach is often a swap rather than one oversized box. Here's how it works: you fill the container, we haul it to the scale and dump it, and bring it back empty so you can keep going. You pay for what you throw by the ton, and you never risk overloading a single box past what the truck can legally carry.
The scheduling trick is to call for the swap before you're completely full, not after. Roofers work fast, and a crew can fill a 15-yard box before lunch on a good day. If you wait until the box is packed to call, you've got a crew standing around while the truck's in transit. Give us a heads-up the day before if you know it's a two-box job, and if you can, request a morning swap so the empty is back before the afternoon push. On multi-day jobs, tell us the schedule up front and we'll build the swaps around your tear-off days.
One more thing on loading: keep it level and don't mound shingles over the top rail. Anything sticking above the sides can't be legally hauled, so we can't take it, and you'll be redistributing it in the driveway while the driver waits. Load heavy material low and flat. A properly loaded 15-yard box of shingles is a beautiful, boring thing.
The bottom line
Roofing tear-off is a weight game, not a volume game. Count your layers, run the square math, and lean toward a heavy-duty 10 to 15 yard box placed with intention on your driveway. Get those three things right and the job goes smooth. Get them wrong and you're paying for a second trip or an overage ticket you didn't budget for. When in doubt, describe the roof to someone who does this every day. Reach out through our contact page or call and we'll get you the right box the first time.
Founder, Arlington Dumpster Rental Guys — sharing straight advice from more than 15 years of local hauling experience.