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Gypsum cover board, 1/2"

Its weight

The table
200 lb a squareThe sources give 170 to 260 lb.
Loose volume
Not known: it counts in the tons aloneNo source found gives a loose volume for torn-off gypsum cover board.
How it was chosen
DensDeck Prime 1/2" weighs 2.0 lb a square foot (Johns Manville, Kingspan, Georgia-Pacific); JM's chart runs from SECUROCK glass-mat 1.70 to SECUROCK gypsum-fiber 2.60.

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. RS-9417 Product Weight Charts (10-25)

    Johns Manville · manufacturer spec sheet · read 2026-10-23

    Gypsum Cover Boards: "JM DensDeck Prime Roof Board 1/2" 2.00" "JM SECUROCK Glass-Mat Roof Board 1/2" 1.70" "JM SECUROCK Gypsum-Fiber Roof Board 1/2" 2.60"

    The document An archived copy

  2. DensDeck Prime Roof Board, Technical Data Sheet (US, issue 1)

    Kingspan (DensDeck) · manufacturer spec sheet · read 2026-10-23

    "Weight, nominal lbs./sq. ft. (kg/m2)": 1/4" "1.2 (5.9)", 1/2" "2.0 (9.8)", 5/8" "2.5 (12.2)"

    The document

  3. 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 "Gypsum roof board, 1/2"": 2.0 lb/ft², 200 lb/square; source named: Georgia-Pacific Gypsum.

    The document An archived copy