The following table provides typical weights for various roofing materials. Where possible, the values were taken from manufacturer technical data sheets and are the actual weights of specific, representative products. In a few cases, the weights we give were calculated using manufacturer data, or taken from a non-manufacturer source that we consider reasonably authoritative. In all cases, these values are meant to provide a general idea of what the various roofing materials weigh, and should not be used if precise values are needed for critical engineering calculations. When precision is necessary, always refer to the data sheets of the actual, specific product you intend to use, or contact the technical department of the product manufacturer or material provider.

Note that roof assemblies typically include more than one type of material. A built-up roof, for instance, will also include some kind of insulation and cover board. Don’t forget to include all roof system materials when calculating roof weight.

Roofing Material Weight (lbs.) per Square Foot Weight (lbs.) per Square (100 SF) Weight (kg) per Square Meter Source
Built-up Roof, 3-Ply, Gravel-Surfaced 6 600 29.3 Owens Corning Roofing and Asphalt; GAF
Built-up Roof, 3-Ply, Smooth-Surfaced 2.33 233 11.38 Owens Corning Roofing and Asphalt; GAF
Built-up Roof, 4-Ply, Gravel-Surfaced 6.3 630 30.76 Owens Corning Roofing and Asphalt; GAF
Built-up Roof, 4-Ply, Smooth-Surfaced 2.58 258 12.60 Owens Corning Roofing and Asphalt; GAF
Copper, 16 oz. 1 100 4.88 Revere Copper Products
Copper, 20 oz. 1.25 125 6.10 Revere Copper Products
Copper, 24 oz. 1.50 150 7.32 Revere Copper Products
EPDM, 60-mil, Ballasted (Membrane and Stone, Typical Weight) 10.75 1075 52.5 Firestone Building Products
EPDM, 60-mil, Fully-Adhered (Membrane Only) 0.47 47 2.29 Firestone Building Products
Gypsum Roof Board, 1/2-Inch Thick 2.0 200 9.8 Georgia Pacific Gypsum
Modified Bitumen, 2-Ply 2.0 200 9.8 Siplast
OSB, 7/16-Inch, Approximate Weight 1.4 140 6.84 APA - The Engineered Wood Association
Perlite Cover Board, 1-Inch Thick 0.94 94 4.59 Johns Manville
Plywood, 15/32-Inch, Approximate Weight, Softwood 1.4 140 6.84 APA - The Engineered Wood Association
Polyisocyanurate Insulation, 1-Inch Thick 0.216 21.6 1.05 Siplast
Polystyrene Insulation (EPS), 1-Inch Thick 0.105 10.5 0.51 Siplast
Polystyrene Insulation (XPS), 1-Inch Thick 0.148 14.8 0.72 Siplast
PVC, 60-mil (Membrane Only) 0.40 40 1.95 Carlisle SynTec
Shingles, Asphalt, 3-Tab (Typical) 2.3 230 11.23 CertainTeed
Shingles, Asphalt, Architectural (Typical) 3.05 305 14.89 CertainTeed
Shingles, Wood, Western Red Cedar, #1 16-Inch, Installed Weight, Dry 1.99 199 9.7 BC Shake & Shingle Association
Shingles, Wood, Western Red Cedar, #1 24-Inch, Installed Weight, Dry 4.26 426 20.8 BC Shake & Shingle Association
Slate, 3/16-Inch 7 700 34.18 Slate Roofs, National Slate Association, 1926
Slate, 1/4-Inch 10 1000 48.82 Slate Roofs, National Slate Association, 1926
Slate, 3/8-Inch 15 1500 73.24 Slate Roofs, National Slate Association, 1926
Slate, 1/2-Inch 20 2000 97.65 Slate Roofs, National Slate Association, 1926
Slate, 3/4-Inch 30 3000 146.47 Slate Roofs, National Slate Association, 1926
Spray Polyurethane Foam, 1-Inch-Thick 0.25 25 1.22 Henry Company
Standing Seam Metal, Aluminum, 0.032", 12-Inch Wide Panels 0.692 69.2 3.38 Fabral Metal Wall and Roof Systems
Standing Seam Metal, Copper, 16 oz. 1.25 125 6.10 Copper Roofings: A Manual, Copper and Brass Research Association, 1925
Standing Seam Metal, Steel, 24 Gauge, 12-Inch Wide Panels 1.49 149 7.27 AEP-Span
Steel Panels, Corrugated, 26 Gauge 1.13 113 5.52 Industrial Metal Supply Company
Stone-Coated Steel Panels 1.5 150 7.32 DECRA Roofing Systems
Thatch (Approximate Weight) 7 700 34.18 Thatch Advice Centre
Tile, Clay 6.0 - 15.10 600 - 1510 29.29 - 73.72 Ludowici Roof Tiles
Tile, Concrete 6.0 - 11.0 600 - 1100 29.29 - 53.71 Boral USA; Entegra Roof Tile
TPO, 60-mil (Membrane Only) 0.29 29 1.4 Carlisle SynTec
Wood Fiberboard Cover Board, 1-Inch-Thick, High-Density 1.375 137.5 6.71 Blue Ridge Fiberboard, Inc.