No Connection

Check your connection and try again

You're looking around a sample roofing company. Open anything; nothing you change is saved. Talk to us

Modified bitumen, base and cap

Its weight

The table
150 lb a squareThe sources give 133 to 200 lb.
Loose volume
Not known: it counts in the tons aloneNo source found gives a loose debris volume for torn-off membrane; it rolls or folds, and a hauler's volume for it was not found.
How it was chosen
Xactimate disposes of a torn-off square at 133 lb (15 squares a ton); Siplast's two-ply membrane weighs 200 lb; a granulated SBS cap sheet alone weighs 78 lb a square (Malarkey) and ASCE 7 gives a smooth bituminous membrane 1.5 psf. 150 lb is the figure for a base and cap, whichever way it was laid.

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.

4 sources

  1. Xactimate price list item RFG BIRMV

    Verisk Xactimate, as Roofometry keeps it · estimating guide · read 2026-10-23

    RFG BIRMV, "Tear off, haul and dispose of modified bitumen roofing." Definition: "Includes: Dump fees, hauling, disposal, and labor to remove bitumen roof." Dump fee component DMOFEE, direct_yield "15.000 SQ/TN".

    A copy is kept with Roofometry.

  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 "Modified bitumen, 2-ply membrane": 2.0 lb/ft², 200 lb/square; source named: Siplast.

    The document An archived copy

  3. Paragon CHROMA Cap, Technical Product Data Sheet (SKU 350)

    Malarkey Roofing Products · manufacturer spec sheet · read 2026-10-23

    "SBS Polymer Modified Granule-Surfaced Fiberglass Cap Sheet" "WEIGHT/ROLL 78 lbs. (35.4 kg)" "COVERAGE 1 square"

    The document An archived copy

  4. Tech Note GE-1: Product Weights (weights of building materials for dead loads, (c) 2021)

    Boise Cascade Wood Products; rows marked (1) cite ASCE 7-16 Table C3.1-1a, sheathing rows (3) cite APA EWS TT-019 (1998) · estimating guide · read 2026-10-23

    Waterproofing Membranes: "Bituminous, smooth surface (1) 1.5" Footnote (1): "Minimum Design Loads for Buildings and Other Structures, ASCE 7-16, Table C3.1-1a." Values are pounds per square foot.

    The document An archived copy