Dumpster Overage on a Roof Job: Who Pays When the Bin Fills

A dumpster on a roof job looks like a simple rental line, and it often stays that way until the bin fills before the crew is finished. Then the question of who pays for the extra haul becomes a real number on the final invoice. This page is for the homeowner who has two or more written roof bids and wants to find the dumpster terms in each one before the tear-off date is set.

Read the bin size as a weight decision

Dumpsters are sold by volume, but roofing debris is limited by weight. A tear-off on a full house carries old shingles, underlayment, drip edge, flashing and nails, and once it is loaded the pile can weigh several thousand pounds. A bin that looks large enough on paper can still be full on weight with half the roof left on the house. When you compare bids, do not stop at the cubic yard count. Ask each roofer how many tons the rental includes and what happens after that.

Asphalt shingles are heavy in the bin in a way that surprises people. A square of shingles, which is 100 square feet of roof, can weigh roughly 200 to 300 pounds when it comes off in one layer. Two layers over an older house raise that figure quickly. The roofer should know the layer count before the dumpster is ordered, because the layer count sets the weight, and the weight sets whether the bin is big enough. If the layer count is not on the bid, that gap belongs in your comparison.

What a dumpster line should name

A dumpster line that is only a single dollar figure tells you very little. The bid should name these items separately so you can compare them across roofers:

• The bin size in cubic yards, and whether it is the same size each roofer quoted.
• The tonnage included in the rental price, and the weight limit on the bin.
• The overage rate per ton charged after the included weight is exceeded.
• Delivery and pickup, listed as separate charges or as part of the rental.
• Who orders a swap if the bin fills early, and how long that swap takes.
• Where the bin will sit, whether on the driveway, in the street or on a curb strip.

If one roofer lists a bin at a lower price and another lists a bin with a higher included weight, the comparison is not finished until both prices are set against the tonnage. A lower daily rate with a steep overage rate can cost more than a higher rate with a generous allowance, depending on how much debris the roof produces.

Compare who signs the rental

Some roofers rent the dumpster in their own name and pass the cost through to the homeowner on the invoice. Others have the homeowner sign directly with the hauler, which means the hauler sends its own bill for overage. Neither arrangement is wrong, but the two work differently when a dispute comes up. If the hauler bills you directly, your name is on the rental and the overage terms. If the roofer bills you, the overage charge arrives inside the roofing total, and you need the bid to show it.

Ask each roofer which of these applies and get the answer in writing. A bid that says "dumpster included" without naming the bin size, weight limit or overage rate does not tell you who pays for the second bin.

Ask what happens when the bin fills mid-tear-off

The moment that causes the most trouble is the one in the middle of a working day. The bin fills around lunch, the crew has old shingles still on the roof, and the hauler has to come back. Ask each roofer how the crew handles that moment. Some stop the tear-off and wait for a swap. Others keep stripping and stack debris on a tarp until the swap arrives. Both approaches are workable, but they affect the schedule, the cost of a second haul and how much debris sits on the driveway overnight.

Also ask whether the swap is charged as a second rental or as an overage on the first. Those two answers can produce very different totals, and the roofing bid should state which one applies.

Street and driveway placement

Where the bin sits is part of the dumpster term. A bin on a private driveway needs room for the hauler's truck and should not block the mailbox route or the neighbor's access. A bin in the street usually requires a right-of-way or dumpster permit, and the rules differ from one municipality to another across St. Louis County. Check with the city's permit desk before the delivery day. If the permit is not handled by the roofer, the bid should say so, and the homeowner should know who is responsible for getting it.

Curb placement also matters for the roof crew. A bin placed too close to the eave can block the ladder line. Ask the roofer to mark the bin spot on the site plan, the same way they mark the ladder and the material drop. A dumpster placed in a poor spot can add a second move, and that move is a cost.

What it costs

The dumpster line is one of the smaller items on a roof bid, but it is one of the easiest to misread. A typical roof bid may show a rental price, a delivery fee and a pickup fee, then leave the overage rate off the page entirely. When you compare two roofers, build a short table with four columns: bin size, included tonnage, overage rate per ton and who bills the overage. Fill it in for each bid. The total cost of the dumpster is not the sum of the visible lines. It is the visible lines plus the overage you can expect based on the layer count and the roof area.

Ask for the overage rate in dollars per ton, not as a general phrase such as "standard overage applies." A standard rate you cannot see is not a number you can compare. If a roofer cannot state the overage rate, that gap is useful information in itself.

What to ask

1. What bin size is quoted, and how many tons does the rental include?
2. What is the overage rate per ton, in dollars?
3. Who signs the dumpster rental, and who receives the overage bill?
4. What happens when the bin fills before the tear-off is finished, and is a swap charged as a second rental?
5. Where will the bin sit, and who handles any street or right-of-way permit?
6. Does the bid name the layer count that the weight estimate is based on?
7. Is the dumpster line in the same written proposal as the shingles and the tear-off, so the total is one number?

If a roofer answers these questions in the same sentence as the price, you have a bid you can compare. If the answers come back as "we will handle that," ask for the phrase in writing. Keys can be reached at the office at (314) 220-2333 to talk through how the dumpster line is written on a specific roof, before the tear-off date is set.