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This document presents a detailed cost analysis for weatherization measures including R-11 and R-19 insulation, as well as window replacement, based on calculations made during the 2009 National Weatherization Training Conference. It highlights material and labor costs for insulating attics and replacing windows, providing cost per square foot for various insulation types and window sizes. The methodology includes calculations for crew labor expenses and insulation coverage, aiming to equip weatherization assistants with essential financial estimates for home energy efficiency improvements.
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Updating the Weatherization Assistant’s Setup Library Mark Ternes Mike Gettings Oak Ridge National Laboratory 2009 National Weatherization Training Conference July 22, 2009
NEAT: R-11 Insulation • Insulation Cost • Bag of insulation costs $20 • For R-11, bag covers 200 ft² • $20/200 ft² = $0.10/ft² • Labor Cost • House with 1000 ft² attic • 2 crew members take 4 hours each to insulate attic • Crew cost is $30/hour • (2 crew) x (4 hours/crew) x ($30/hour) = $240 • $240/1000 ft² = $0.24/ft²
NEAT: R-19 Insulation • Insulation Cost • Bag of insulation costs $20 • For R-11, bag covers 100 ft² • $20/100 ft² = $0.20/ft² • Labor Cost • House with 1000 ft² attic • 2 crew members take 6 hours each to insulate attic • Crew cost is $30/hour • (2 crew) x (6 hours/crew) x ($30/hour) = $360 • $360/1000 ft² = $0.36/ft²
NEAT: Window Replacement • 20” x 40” Window • = 60 U.I. • $2/U.I. • 60 U.I. x $2/U.I. = $120 • Area = 20 in x 40 in = 800 in²/144 = 5.56 ft² • $120/5.56 ft² = $21.6/ft² • 36” x 48” Window • = 84 U.I. • 84 U.I. x $2 U.I. = $168 • Area = 36 in x 48 in = 1728 in²/144 = 12 ft² • $168/12 ft² = $14/ft² • Average cost • ($21.6 ft² + $14/ft²)/2 = $17.8/ft²
