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Synthetic (composite) slate or shake

Its weight

The table
380 lb a squareThe sources give 311 to 450 lb.
Loose volume
Not known: it counts in the tons aloneNo source found gives a loose volume for torn-off composite slate or shake.
How it was chosen
Brava's composite tile weighs 311 lb a square; Xactimate disposes of a torn-off square of synthetic composite at 450 lb (4.44 squares a ton). 380 lb is their middle.

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

    Row "Synthetic composite shakes, slates, tiles": 3.11 lb/ft², 311 lb/square; source named: Brava Roof Tile.

    The document An archived copy

  2. Xactimate price list item RFG CSRMV

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

    RFG CSRMV, "Tear off, haul and dispose of synthetic composite roofing." Definition: "Includes: Dump fees, hauling, disposal, and labor to remove synthetic polymer composite roofing (imitation slate/shake) and felt." Dump fee component DMOFEE, direct_yield "4.440 SQ/TN".

    A copy is kept with Roofometry.