🧪 ASTM C209 Gravimetric Moisture % by Weight, Wet Core Dry Weight & R-Value Loss

Roof Core Gravimetric Moisture Content Calculator

Calculate laboratory gravimetric moisture content for roof core samples under ASTM C209: calculate percentage moisture by weight (% = [Wet Wt - Dry Wt] / Dry Wt x 100 in polyiso, expanded polystyrene, and fiberglass insulation), determine thermal R-value degradation %, and forensic engineering margins.

1. Project & Operating Inputs

Total Roof Core Cuts Taken (Core Count e.g. 18 Cores)

Average Measured Moisture by Weight (% e.g. 45% Moisture Content)

Customer Bid Price for Core Extraction, Lab Bake & Patch ($ / Core)

Core Cutter Tool, Mastic Patch, Laboratory Oven Weighing & PE Report ($ / Core)

2. Financial Breakdown & Yield

ASTM C209 GRAVIMETRIC ROOF CORES

Turnkey Forensic Core Testing Profit

Roof Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost