A roofer measures your roof in squares. A dumpster is priced by container size and the tonnage it includes. Those are two different units, and the bridge between them is debris weight. A single-layer asphalt tear-off runs about 200 to 300 pounds per square, so a typical roof lands in the 2.5 to 5 ton range. You pay for the size you fill and the weight you throw away, not “per square.”
Hammond and the surrounding Tangipahoa, Livingston, and St. Tammany parishes see steady roofing work through the summer storm season. Roofing crews move fast, and the cleanup side has to keep pace. The problem shows up when a roof quoted at “22 squares” meets a dumpster quoted at “2 tons included,” and nobody did the conversion first. This guide does that math so you book the right container the first time.
A square is a roofing unit, not a weight. It describes area so a roofer can estimate material and labor.
One roofing square equals 100 square feet of roof surface, a 10-foot by 10-foot patch, per the InterNACHI shingle inspection standards. Roofers order shingles, underlayment, and labor by the square because it keeps the estimate tied to area.
A dumpster does not care about area. It cares about volume and weight. Two roofs of the same square count can throw off very different tonnage depending on the shingle and how many old layers come off. That is why translating squares into pounds is the step that actually protects your budget.
Shingle weight is where squares turn into tons. The number depends on shingle type and the number of layers you remove.
Single-layer 3-tab asphalt shingles run about 200 to 250 pounds per square, and heavier architectural or laminated shingles run about 250 to 300 pounds per square, with premium products reaching higher, again per InterNACHI’s published shingle weights. Multiply by your square count, and you have a working estimate before the first shingle comes off.
Put into tons, a 20-square single-layer 3-tab tear-off weighs about 5,000 pounds, or roughly 2.5 tons. The same 20 squares in architectural shingles land closer to 3 to 4 tons. That gap of a ton or more is exactly what decides which dumpster you need.
Old layers are the variable most people forget. A re-roof that strips two layers weighs about twice a single-layer job.
Building code caps how many layers can stack up. The International Residential Code, section R908.3.1, does not allow a new roof-over where two or more layers already exist, so a tear-off removes at most two layers of asphalt shingle. That is the good news for your estimate: your worst case is double the single-layer weight, not triple.
Run the numbers on a 20-square roof with two layers of 3-tab. That is roughly 10,000 pounds, or about 5 tons of debris. A job that would fit a 20-yard on a single layer now needs more tonnage headroom.
Once you have a weight estimate, sizing is straightforward. Shingle debris is heavy and dense, so tonnage, not volume, usually decides the container.
The table below maps common roofing jobs to the container that carries them without an overage surprise. Included tonnage is what comes standard with each size.
| Dumpster size | Tonnage included | Typical roofing job |
|---|---|---|
| 15-yard | 1 ton | Small roof section, shed or garage roof, single-layer patch |
| 20-yard | 2 tons | Partial or smaller single-layer tear-offs, up to about 16 squares of 3-tab |
| 30-yard | 4 tons | Full-size roofs, architectural shingles, and two-layer tear-offs |
A smaller or partial single-layer tear-off usually stays inside the 20-yard, 2-ton range. A full average-size roof tells a different story: at 200 to 250 pounds per square, a 20-square 3-tab job runs about 2 to 2.5 tons, which sits right at or just past the 20-yard limit. That is why a whole-roof tear-off, a heavier architectural roof, or any two-layer strip typically points to the 30-yard. If you are between two sizes, the breakdown in our guide to dumpster weight limits and overage fees shows how the tonnage math plays out.
Here is the part that answers the “per square” question directly. Your roofing dumpster is not billed by the square. It is billed by the size you book, the tonnage you exceed, and the days you keep it.
Clean Slate roll-offs include tonnage by size: 1 ton on the 15-yard, 2 tons on the 20-yard, and 4 tons on the 30-yard. Go over that, and additional weight is $70 per ton. Keep the container past the rental window, and added days are $15 each. The Dump and Return option resets your rental days if a big job needs a mid-project haul-off.
So the honest way to read a roofing quote is this. Estimate your squares, convert to tons using the weights above, then pick the size whose included tonnage covers you with a little room. That approach beats guessing by area every time. For the full container breakdown and current numbers, the Clean Slate pricing plans lay out each size side by side, and our roofing dumpster rental service in Hammond covers tear-offs, shingle disposal, and jobsite cleanup.
Roofing is one of the largest single sources of construction debris nationwide, part of the roughly 600 million tons of construction and demolition material the EPA tracks each year. Sizing the container correctly keeps that weight moving off your jobsite instead of stacking up in the yard.
These are the questions Hammond homeowners and roofing crews ask before booking a tear-off dumpster. If your roof is between two sizes, the tonnage math above is what tips the call.
For a single-layer 3-tab tear-off, a 20-yard dumpster stays inside its included 2 tons up to about 12 to 16 squares. Past that, or with heavier architectural shingle, you either add tonnage at $70 per ton or move up to the 30-yard. Weight, not volume, is the binding limit on shingles.
Roofers use squares because it ties material and labor to roof area. A dumpster is priced by container size and the weight you dispose of, since disposal fees are charged by the ton at the landfill. Converting your square count into an estimated tonnage is how you connect the two.
Usually yes. Removing two layers roughly doubles the debris weight versus a single layer. A 20-square roof that fits a 20-yard on one layer can reach about 5 tons on two layers, which points toward a 30-yard or added tonnage allowance.
Additional weight is billed at $70 per ton above what your size includes. There is no penalty beyond the per-ton rate, so a small overage is not a crisis. Estimating your squares first is simply how you avoid a surprise on the final invoice.
Roofing tear-offs mix best with roofing debris: shingles, underlayment, flashing, and nails. Mixing in heavy materials like concrete or dirt can push you over tonnage fast and may not be accepted. Ask when you book, so the load stays within the allowance.
Each rental includes a set number of days, with additional days at $15 each. For multi-day tear-offs, the Dump and Return option hauls off a full container and resets your days, so the crew is not waiting on space.
Booking a roofing tear-off in Hammond? Size it by the ton, not the square. Tell us your roof’s square count and shingle type, and we will match you to the container that covers the weight without an overage bill.
