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No. 30 asphalt felt

Its weight

The table
26 lb a squareThe sources give 16 to 27.8 lb.
Loose volume
Not known: it counts in the tons aloneNo source found gives a loose volume for torn-off felt; it goes out with the roof covering.
How it was chosen
ASTM D226 Type II felt weighs 26.0 lb a square (TriBuilt); IIBEC gives the old "30-lb" felt 27.8 lb; Roof Observations gives 16 to 27 lb.

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. No. 30 Asphalt Felt - ASTM D226 - Product Data

    TriBuilt Materials Group · manufacturer spec sheet · read 2026-10-23

    "Roof Coverage per Roll 216 sq ft" "Mass of Saturated felt roll 26.0 lbs/ 100 ft sq"

    The document

  2. When Is No. 30 Asphalt Felt Not No. 30 Asphalt Felt? (Jeffrey Levine, November 10, 2019)

    IIBEC (International Institute of Building Enclosure Consultants) · industry association · read 2026-10-23

    "The "15-lb. weight" felt weighed approximately 60 lbs. per 432-sq.-ft. roll, or 13.9 lbs. per square" "The 30-lb. weight felt weighed approximately 60 lbs. per 216-sq.-ft. roll, or 27.8 lbs. per square"

    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 "Asphalt-impregnated felt, #30": 0.16–0.27 lb/ft², 16–27 lb/square; source named: Atlas Roofing.

    The document An archived copy