Roofing Tear-Offs, Priced by Squares — Not Guesses
Roofing debris is the most predictable load in the dumpster business, and the only one with its own unit of measure: the square (100 sq ft of roof). A square of three-tab shingles with underlayment runs roughly a quarter ton. From there, the container math writes itself — and so does the budget:
Call (410) 808-7000 with the square count — or your roofer’s — and the box, the tonnage plan, and the drop date confirm in one conversation.
The Container Math
|
The roof |
Debris estimate |
The box |
|---|---|---|
|
20 squares, single layer |
~5 tons |
|
|
30 squares, single layer |
~7.5 tons |
20-yard with tonnage room to spare |
|
25 squares, two layers down |
~12.5 tons |
|
|
Rowhome flat roof, tar & gravel |
heavy per square |
Why Roofers Run Our Boxes
Loading a Tear-Off Right
Shingles load fast over the rails — that’s the point of a roofing box — but two rules keep the load legal and the haul clean: keep debris level with the top rail (an overloaded box can’t be legally tarped, and Baltimore-area haul-outs mean tight turns), and keep non-roofing trash out of the stream — lunch wrappers, packaging, and old flashing mixed through the load are fine in small amounts, but wood and construction junk convert the pricing conversation. The full rundown lives in the loading guide.
The Roofs We See
How It Works
1
Book online or call (410) 808-7000 — square count, layers, and the crew’s start date
2
Dropped before the tear-off — driveway or staging spot, boards down where surfaces matter
3
Load over the rails, level to the top — underlayment, shingles, flashing, drip edge
4
Pulled on the crew’s schedule — same-week, phased, or end-of-job; swaps adjust with one call
Roofing season compresses everything — May through October books out first. The quick-start rental guide covers the full loading rules if your crew hasn’t run our boxes before.