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Clay tile, S or flat interlocking

Its weight

The table
800 lb a squareThe sources give 600 to 1,500 lb.
Loose volume
0.67 cubic yards a square
How it was chosen
Ludowici's Classic 16" interlocking weighs 750 lb a square; the Roof Observations table gives clay tile 600 to 1,500 lb from Ludowici's range. 800 lb is the figure for the common interlocking profiles. Volume at Seattle's 1,200 lb a cubic yard for loose ceramic tile.

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.

3 sources

  1. Classic 16" Interlocking Clay Roof Tile (LRT-505)

    Ludowici Roof Tile · manufacturer spec sheet · read 2026-10-23

    CHARACTERISTIC: "Weight Per Square 750 lbs."

    The document An archived copy

  2. 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

    Row "Clay tile": 6–15 lb/ft², 600–1,500 lb/square; source named: Ludowici Roof Tiles.

    The document An archived copy

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

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

    "Ceramic tile, loose 6"x6" | one cubic yard | 1200 | Tellus" Footnote 1: "Disclaimer: This table is for general guidance only. Not for contract payment."

    The document An archived copy