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TPO membrane, 45 mil

Its weight

The table
30 lb a squareThe sources give 30 to 30 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
Johns Manville's 45-mil TPO weighs 0.30 lb a square foot nominal; no second maker's 45-mil figure was found.

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.

1 source

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

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

    Single Ply Membranes, JM TPO: "TPO 45 mil 0.30" (nominal weight lb/sqft)

    The document An archived copy