What Size Dumpster Do I Need for a Roof Replacement?

For most single-layer asphalt roofs on an average Brazos Valley home, a 20 yard dumpster is the right call. Small roofs and low-slope work often fit a 10 yard. Big roofs, thick architectural shingles, and two-layer tear-offs usually need a 30 yard or a second pull.

Here is the part most size guides skip. Roofing debris runs out of weight long before it runs out of room. So the real question is not how much space your shingles take. It is how many pounds they weigh.

This guide walks you through the math a roofer would use. You will learn how to measure a roof in squares, what each square weighs once it comes off, and which container actually fits that load without tipping into overage.

Want to skip all of it? Call (877) 779-2783 and tell us about the roof. We will size it for you.

Roofing Dumpster Size Chart

Start here, then check the weight math below. The chart assumes one layer of asphalt shingles and no deck repair.

Roof size	3-tab shingles	Architectural shingles
Up to 12 squares (1,200 sq ft)	10 yard	10 or 15 yard
12 to 20 squares	15 or 20 yard	20 yard
20 to 28 squares	20 yard	30 yard
28 squares and up	30 yard	30 yard, or two pulls
Any two-layer tear-off	Step up one size	Step up one size, or two pulls

Every one of those rows can shift. Wet shingles, a steep pitch, or new decking all add weight. Treat the chart as a starting point and the weight math as the real answer.

How Big Is Your Roof, Really?

Almost every sizing mistake starts here. People use the size of the house instead of the size of the roof. Those are two different numbers.

What a Roofing Square Is

Roofers measure in squares. One square covers 100 square feet of roof, which is a patch 10 feet by 10 feet. That makes a 2,000 square foot roof a 20 square job.

Your roofer already knows this number, so ask for it before you book anything else. It is the single most useful fact you can bring to a dumpster call.

Your House Size Is Not Your Roof Size

A roof slopes. That slope makes the roof surface larger than the floor plan under it, and the steeper the pitch, the bigger the gap gets.

The fix is a pitch multiplier. Take the footprint of the house, then multiply.

• A 6/12 pitch adds about 12 percent
• A 9/12 pitch adds about 25 percent
• A 12/12 pitch adds about 41 percent

So a 2,000 square foot footprint on a common 6/12 roof is not 20 squares. It is closer to 22 and a half. That gap is small on paper. It is about 1,000 pounds of shingles once you load it.

Counting Squares From Bundles

No measurement? Count bundles instead. Three bundles of shingles cover one square, and one bundle covers about 33 square feet.

If your roofer ordered 66 bundles, you have a 22 square roof. Simple as that.

What a Tear-Off Actually Weighs

This is where the size decision really gets made. Shingles are dense. A load that looks half empty can already be over the limit.

Weight by Shingle Type

Sources disagree on exact numbers, so plan with the high end. It is cheaper to have room left over than to pay for extra tons.

Material	Weight per square
3-tab asphalt	230 to 250 lbs
Architectural asphalt	400 to 430 lbs
Wood shake	about 400 lbs
Concrete tile	600 to 1,200 lbs
Slate	700 to 1,000 lbs

Notice the jump from 3-tab to architectural. Same roof, same square count, and nearly double the weight. That one detail moves plenty of jobs up a full size.

Tile and slate are a different animal. If that is your roof, call us before you order anything.

The Second Layer Problem

Texas homes often carry two layers of shingles. The second one hides under the first, so nobody sees it until the tear-off starts.

A second layer roughly doubles the weight of the tear-off. It does not add a little bit on top. It adds another whole roof.

Check before you book. Look at a cut edge along the eave, peek into the attic, or just ask your roofer what he found. When you are not sure, size up, because a slightly big box still costs less than an overage ticket.

A Worked Example

Say you have a 2,000 square foot roof with architectural shingles and one layer.

1. 2,000 square feet divided by 100 gives you 20 squares
2. 20 squares times 400 lbs per square is 8,000 lbs
3. One layer, so the number stands
4. 8,000 lbs divided by 2,000 is 4 tons

Four tons of shingles. That fits inside a 30 yard dumpster, which includes 3 to 4 tons. Put the same roof in a 20 yard and you are over the included weight, even though the box is only about half full.

Now swap in 3-tab shingles at 250 lbs per square. The same roof drops to 2.5 tons, which lands right inside the 20 yard allowance. One material change, one size change.

Why Roofing Is a Weight Problem, Not a Space Problem

Most debris fills the box first. Furniture, cardboard, and drywall all run out of room long before they run out of pounds. Roofing flips that.

Here is the trap that catches people. A roofing load looks half empty at pickup, so the homeowner assumes he bought too much box. He did not. He bought the right box and hit the ceiling that actually governs the job.

A bigger container does not buy you much more weight, either. Tonnage allowances do rise with size, but they rise slowly, because a loaded truck still has to obey legal road limits.

Compare two of ours. The 30 yard holds about twelve pickup loads and includes 3 to 4 tons, while the 20 yard holds about eight and includes 2 to 3 tons.

Space nearly doubles. Weight barely moves.

None of this is guesswork on our end, either. Every load crosses a certified scale at the landfill, and the ticket from that scale is what any weight past your allowance gets billed against.

That is why we sometimes talk people out of the big box. When your load is heavy and small, a smaller container with the right tonnage beats a huge one you can never legally fill.

What Adds Weight People Forget

Run through this list before you lock in a size:

• Extra layers. Each one roughly doubles the shingle weight.
• Rain. Soaked shingles can run 15 to 20 percent heavier.
• Age. Old, weathered layers hold grit and moisture, so add another 10 to 15 percent.
• Nails and underlayment. Small on their own, real once you total the roof.
• New decking. Plywood sheathing runs about 140 lbs per square. Re-deck a 20 square roof and you just added 1.4 tons.

Decking is the one that surprises people most. It never shows up in a shingle calculator, and it can push a comfortable load straight into overage.

Matching Your Roof to a Waste Falcon Roll-Off

Here is what our containers hold, straight from our size pages:

Size	Dimensions	Included weight	Typical roofing fit
10 yard	12’ L x 8’ W x 3.5’ H	1 to 2 tons	Small roof, garage, porch, or shed
15 yard	16’ L x 8’ W x 4’ H	2 tons	Mid-size roof, single layer
20 yard	22’ L x 8’ W x 4.5’ H	2 to 3 tons	The standard single-layer tear-off
30 yard	22’ L x 8’ W x 6’ H	3 to 4 tons	Big roof, architectural shingles, or two layers

Included weight is the tonnage built into your flat rate. Go past it and the extra tons are billed at weigh-out, using the scale ticket from the landfill.

Two things worth knowing. Allowances differ from hauler to hauler, so a cheaper quote with less tonnage is not really cheaper. And if you are a roofer running steady work, our construction dumpster rental covers job-site scheduling and swaps. See pricing for how our flat rate is put together.

Protecting the Driveway

A loaded roofing container is heavy in a small footprint. On a hot Texas afternoon, asphalt gets soft, and soft asphalt marks easily.

Lay plywood under the wheels and the rails. Three-quarter inch sheets work well, and full coverage under the box works better than a couple of scraps. Concrete handles the load better than asphalt, though it can still scuff.

Tell us where you want it before delivery day. Our driver can place the box to keep weight off the softest spots, and we would rather solve that on the phone than in your driveway.

Where Roofing Debris Goes Around Here

Shingles count as construction and demolition debris in Texas. They cannot go in your household cart, and most curbside services will not take them at any volume.

Texas routes this material to permitted landfills. The state’s environmental agency, the TCEQ, runs two classes that accept it: Type I and Type IV landfills. Type IV sites are built specifically for brush and construction debris.

There is a recycling angle too. Old shingles can be ground and blended back into road pavement, and TxDOT allows recycled shingles in asphalt mixes. The nearest commercial operation doing that is a long haul from the Brazos Valley, so most local tear-offs still go to a landfill. It is worth knowing the pathway exists.

One more wrinkle if you are out in Washington County. The City of Brenham runs a collection station on Old Chappell Hill Road, and it is set up for household loads rather than contractor tear-offs. A homeowner hauling a few bundles is a different situation than a roofing crew stripping a whole house. Call the city first and confirm what they will accept and what it costs, because those terms change.

For a full tear-off, a roll-off on site is almost always the simpler path. You load as the roofers work, and the whole roof leaves in one pull.

Curious what else can ride along in the box? Our guide on what can and can’t go in a roll-off covers the full list.

Hail Season and Booking Ahead

Central Texas hail runs hardest from March through June, and April and May are the peak. Hail around an inch or bigger is usually what turns a repair into a full replacement.

That timing matters for you. When a storm crosses Brazos or Washington County, every roofer in the area books up in the same week, and dumpsters go out the door just as fast.

Call as soon as your roofer sets a date. Even a few days of lead time makes delivery smoother, especially during the spring rush.

Putting the box on a public street instead of your own driveway? Rules differ by city. Our guide to dumpster permits in College Station and Bryan walks through what each city wants.

Frequently Asked Questions

What size dumpster do I need for a 2,000 square foot roof? For one layer of 3-tab shingles, a 20 yard usually fits. For architectural shingles on the same roof, plan on a 30 yard, since the load runs near 4 tons.

How many squares of shingles will a 20 yard dumpster hold? Roughly 20 to 24 squares of 3-tab, and closer to 12 to 15 squares of architectural. Weight sets that limit, not space.

How much does a roof tear-off weigh? Figure 230 to 250 lbs per square for 3-tab and 400 to 430 lbs for architectural. Multiply by your square count, then double it for a second layer.

Does a second layer of shingles change my dumpster size? Yes, and by a lot. A second layer roughly doubles the weight, so most two-layer jobs move up a full size or take two pulls.

Can I put shingles in my regular trash can? No. Shingles are construction debris, and curbside service will not take them in tear-off volumes.

Do I need a bigger dumpster if the roofer replaces the decking? Usually yes. Plywood decking adds about 140 lbs per square, so a full re-deck on an average roof adds well over a ton.

Get the Size Right the First Time

Measure the roof in squares, note the shingle type, and find out if there is a second layer. Those three facts pick the container almost every time. When any one of them is a guess, size up.

We deliver roll-offs across Bryan, College Station, and the wider Brazos Valley, including roll-off dumpster rental in Brenham and the rest of Washington County. Tell us your roof and we will match the box to the load, tonnage and all.

Call (877) 779-2783 and we will have your dumpster sized and scheduled before your roofer shows up.