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Hand-split cedar shakes, medium

Its weight

The table
400 lb a squareThe sources give 400 to 640 lb.
Loose volume
0.92 cubic yards a square
How it was chosen
The BC Shake & Shingle Association's figure for 18" medium shakes, 400 lb a square dry and 640 lb wet; dry is the figure. Volume at Seattle's 435 lb a cubic yard for wood roofing.

Your figure

None: estimates use the table's.

Give your own figure
For each square of roof, or each sheet of decking.
Loose, as it lands in the dumpster, for each square or each sheet.
Your scale tickets, your hauler's figures: what a reader would check it against.

2 sources

  1. Weight of Roofing Materials: Comprehensive Reference Table (Jack Gray, RRO; first published 12/09/2025, updated 12/24/2025)

    Roof Observations · trade publication · read 2026-10-23

    Rows "Cedar shakes, 18" medium, dry": 4.0 lb/ft², 400 lb/square; "Cedar shakes, 18" medium, wet": 6.4 lb/ft², 640 lb/square; source named: BC Shake & Shingle Association.

    The document An archived copy

  2. General Measurement Standards and Reporting Guidelines: Volume and Weight Conversion Factors for Recyclables

    City of Seattle, Seattle Public Utilities · government · read 2026-10-23

    "Roofing shakes, shingles (wood) | one cubic yard | 435 | Tellus" Footnote 1: "Disclaimer: This table is for general guidance only. Not for contract payment."

    The document An archived copy