Roofing Project Dumpster Guide: Sizing for Shingle Tear-Offs

Size your dumpster by roof squares, not guesses

Roofers measure in squares: one square is 100 square feet of roof. A single layer of asphalt shingles weighs roughly 200 to 250 pounds per square, so a 20-square roof (2,000 square feet) produces about two to two and a half tons of tear-off debris. As a working rule, a 20 yard dumpster handles about 15 to 20 squares of single-layer shingles, and a 30 yard container handles roughly 25 to 30 squares.

Count your layers before you order. A second layer of shingles doubles the weight and volume, and a tear-off down to the deck adds old underlayment and sometimes rotted sheathing. Two layers on a 20-square roof pushes you from a 20 yard container to a 30, and possibly to a scheduled swap. Tell us the square footage and the number of layers when you book and we will size it correctly the first time.

Shingle weight basics and the weight limit

Shingles are the classic weight-limit trap: a dumpster can look half full and still be over the legal limit. That is why roofing loads are planned by weight. Every rental includes a weight allowance; going over it costs an overage fee per ton. Spreading shingles flat and even across the container floor, instead of piling them at the drop point, keeps the load stable and makes the weight easy to estimate.

Never load debris above the top of the walls. On roofing jobs this is tempting because shingles stack neatly, but an over-height load cannot be legally tarped and hauled, and it will be refused at pickup.

Placement and safety on tear-off day

Place the dumpster as close to the work side of the house as the driveway allows. Roofing crews work fastest when the tear-off drops or slides directly toward the container instead of being carried around the house. Our drivers lay protective boards under the container so the driveway survives the job, and we will position it where you point.

Keep the area around the container clear of ladders, hoses, and material pallets. Crews need a clean approach path all day, and the driver needs the same clear path at pickup. If the house has no driveway access, call ahead; street placement may require a permit from the city, and we would rather sort that out before delivery than on tear-off morning.

Conclusion

Size by squares and layers: a 20 yard dumpster for most single-layer tear-offs up to about 20 squares, a 30 for bigger roofs or second layers. Respect the weight limit, load flat, and place the container on the work side. For the weight math in more detail, see our roofing dumpster weight guide or estimate the job with the dumpster size calculator.