How much does a shingle roof weigh?

August 23, 2026 · 5 min read

Count your bundles: 25 bundles of shingles weigh one ton, and one bundle covers 32 sq ft of roof. A 1,600 sq ft roof is 50 bundles — 2 tons — exactly the tonnage included with a 20 yard dumpster. Here is the full math, and the size that follows from it.

The math fits in two numbers

A roof is the most deceptive home project there is: the pile of shingles looks modest, yet it already weighs tons. The reason is simple — asphalt shingles are dense and stack flat, with no air in between. Fortunately their weight can be worked out ahead of time, without a scale, using two numbers every jobsite runs on.

1 bundle covers 32 sq ft of roof. That is real installed coverage, overlap included. To get your area, measure the house footprint — length × width — and add about 10% for the slope. A 40 ft × 30 ft bungalow is 1,200 sq ft on the ground, so around 1,320 sq ft of roof: 42 bundles.

25 bundles weigh 1 ton. Division does the rest: 42 bundles ÷ 25 = 1.7 tons. That weight — not volume — is what decides the dumpster size, because shingles hit a rental's included tonnage long before they fill the box: a 20 yard can physically hold 175 bundles, which is 7 tons.

Your roof in bundles, tons and dumpster size

Roof area	Bundles	Weight	Recommended size
800 sq ft	25	1 ton	10 yard — its included ton covers it all
1,600 sq ft	50	2 tons	20 yard — or the 40 to clear out the garage in the same rental
2,400 sq ft	75	3 tons	20 or 40 yard — depending on the clean-up you add
3,200 sq ft	100	4 tons	40 yard — its 4 included tons cover it all

Rounded up to full bundles: 1 bundle covers 32 sq ft, 25 bundles weigh 1 ton. Included tonnage is 1 ton with the 10 yard, 2 tons with the 20, 4 tons with the 40.

What makes the box heavier — and changes the math

The bundle math covers the shingles themselves. Two situations push it up, and they are better known before delivery than on the weigh ticket.

Check before you order

Two layers of shingles? Some roofs were re-covered without a tear-off. Two layers = twice the bundles coming down. A glance at the roof edge tells you.
Is the decking going too? If rotten plywood sheets get replaced, they go into the same box — count them on top.
Paper and membranes. They follow the shingles; on an ordinary roof their weight stays marginal next to the bundles.

What changes nothing

The brand or colour of the shingles: 25 bundles per ton remains the jobsite's working order of magnitude.
The slope: it changes the area (so the bundle count), not the weight of a bundle.
The season: the weight is the same — only Libération Express, March through October, rewards a box freed up fast.

Run the math for your own roof

Enter your bundles — or your square feet — and the calculator returns the weight, the bundles to plan for and the size that leaves without overage. It works in reverse too: area first, bundles second.

Open the roofing calculator The size guide

Which size for which weight

Up to 25 bundles: the 10 yard is enough — its included ton covers it all, and a 20 yard would leave half empty. At 30 bundles and up, the 20 yard becomes the right call: its 2 included tons make it cheaper than a small box running over. Around 50 bundles and beyond, two paths both stand: the 20 yard if the roof is all you are tossing, the 40 yard — 4 included tons — if you use the same rental to clear the garage or basement too.

Past the included tonnage, overage is billed from the disposal centre's weigh ticket, never rounded up. And if the job wraps quickly — a roof often takes one to three days — Libération Express credits you $50 when the box is freed within 48 hours of delivery, during the high season from March to October.

Free quote

It takes a minute — and the team gets back to you quickly.

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Your name *

Email *

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Desired dumpster type *

Your city *

Client type

Materials to dispose of, site access, etc.

Réponse / Reply (Fr / En) *

What happens next: we email you the quote: recommended size, exact price and possible date. Have your bundle count handy — or the roof area: it is the one thing we cannot guess.

The questions that follow the math

How many bundles of shingles for my house?

Divide your roof area by 32: one bundle covers 32 sq ft installed. For the area, measure the house footprint and add about 10% for the slope. A 2,500 sq ft roof is 79 bundles — the calculator on the Roofing dumpster page returns the number and the size in one entry.

Do 50 bundles fit in a 10 yard?

Yes for volume — but that is the classic trap: the 10 yard includes only one ton, and 50 bundles weigh two. The 20 yard includes the 2 tons: it costs less, for the same roof.

My roof has two layers of shingles. What does that change?

Twice the bundles coming down, so twice the weight. A 1,600 sq ft roof with two layers is about 100 bundles — 4 tons: you go from a well-matched 20 yard to a 40 yard, whose 4 included tons cover the full tear-off.

Is the weight actually weighed, or estimated?

Weighed. Any overage is billed from the disposal centre's weigh ticket — never rounded, never estimated. That is also why we run the bundle math with you before delivery: the size leaves right the first time.