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Deck, Shed & Fence Tear-Off Dumpster Guide

Outdoor teardowns are the opposite of roofing: the debris is bulky instead of dense, so volume is the constraint and your saw is the money-saver. A deck that fills a 20-yard as a tangled pile fits a 15 broken down and layered. Here's the honest sizing, plus the one heavy surprise these jobs hide.

The short version: Decks, sheds, and fences size by volume, and breakdown effort moves you a full container size. Small ground-level deck or garden shed: 12-yard. Typical backyard deck or full shed: 15. Multi-level deck, big shed, or structure plus contents: 20. The sleeper: concrete footings on fence and deck posts add real weight to an otherwise light load, so count them and mention them when you book. Cut long boards to fit, stack flat in layers, keep it level with the rail. Nails can stay in.

Why Your Saw Changes the Container Size

Whole walls and long boards are mostly air.

Lumber demo has a huge spread between its tangled volume and its packed volume. A shed wall tossed in whole spans the container and blocks everything beneath it; the same wall flattened is a six-inch layer. Deck boards angled diagonally waste the corners; cut to fit and stacked flat, they layer like flooring. Plan an hour with a circular saw or a sledge as part of the job, and you'll often drop a full container size. The general technique lives in the loading guide; for lumber the two rules are cut to fit and stack flat.

The Size Ladder for Outdoor Teardowns

12 for small and simple, 15 for the typical, 20 for big or loaded.

The Footing Surprise

The lumber is light. The concrete blobs aren't.

Fence and deck jobs read as light until the posts come out of the ground wearing their concrete footings. One footing is nothing; thirty of them are real tonnage riding along in a volume-priced load. Knock the concrete off the posts where it comes free, count what you can't, and say the number when you book so the weight allowance fits the real job. If a teardown is mostly concrete, an old patio going with the fence line, the math flips entirely and the heavy debris guide is your article.

The Practical Details

Nails stay in, pressure-treated is fine, keep it level.

Things people call to ask: nails and screws can stay in the wood, no need to pull them. Pressure-treated lumber and old fencing are fine in the container. And whatever the material, keep the final load level with the top rail; a mounded load of lumber can't legally be hauled, and shifting boards are exactly what tarps and rails are there to contain. Five included days is plenty for a weekend teardown with a buffer day to spare.

Frequently Asked Questions

What size for a deck?

Small ground-level: 12. Typical backyard deck: 15. Multi-level or oversized: 20. Breakdown effort moves you a full size.

What size for a shed?

Garden shed: 12. Full-size shed: 15. Big shed or structure plus stored contents: 20.

Do concrete footings matter?

Yes, they're the hidden weight. Knock concrete off posts where you can and mention the footing count at booking.

Do I need to pull nails?

No. Nails and screws stay in. Cut long boards to fit, stack flat, keep the load level with the rail.

Tearing one down this weekend?

Tell us the structure and we'll size it honestly, saw time included in the advice.

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Written by John R., partner at Capital Region Dumpsters, a locally owned and operated roll-off dumpster company serving the Capital Region of New York. Last updated August 15, 2026.