Insulation (list of insulation material)

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R-values per inch given in SI and Imperial units (Typical values are approximations, based on the average of available results. Ranges are marked with "–". Clicking on SI column sorts by median value of range, clicking on Imperial column sorts by lowest value. Third column are real SI values that are not per inch. Based on the units, the two last columns should have a conversion factor of 5.71. In practice, the numbers will have been measured using different methods.)
Material m2·K/(W·in) ft2·°F·h/(BTU·in) m·K/W
Vacuum insulated panel 5.28–8.8 R-30–R-50
Silica aerogel 1.76 R-10
Polyurethane rigid panel (CFC/HCFC expanded) initial 1.23–1.41 R-7–R-8
Polyurethane rigid panel (CFC/HCFC expanded) aged 5–10 years 1.10 R-6.25
Polyurethane rigid panel (pentane expanded) initial 1.20 R-6.8
Polyurethane rigid panel (pentane expanded) aged 5–10 years 0.97 R-5.5
Foil faced Polyurethane rigid panel (pentane expanded) 45-48 [1]
Foil-faced polyisocyanurate rigid panel (pentane expanded ) initial 1.20 R-6.8 55 [1]
Foil-faced polyisocyanurate rigid panel (pentane expanded) aged 5–10 years 0.97 R-5.5
Polyisocyanurate spray foam 0.76–1.46 R-4.3–R-8.3
Closed-cell polyurethane spray foam 0.97–1.14 R-5.5–R-6.5
Phenolic spray foam 0.85–1.23 R-4.8–R-7
Thinsulate clothing insulation 1.01 R-5.75
Urea-formaldehyde panels 0.88–1.06 R-5–R-6
Urea foam[2] 0.92 R-5.25
Extruded expanded polystyrene (XPS) high-density 0.88–0.95 R-5–R-5.4 26-40[1]
Polystyrene board[2] 0.88 R-5.00
Phenolic rigid panel 0.70–0.88 R-4–R-5
Urea-formaldehyde foam 0.70–0.81 R-4–R-4.6
High-density fiberglass batts 0.63–0.88 R-3.6–R-5
Extruded expanded polystyrene (XPS) low-density 0.63–0.82 R-3.6–R-4.7
Icynene loose-fill (pour fill)[3] 0.70 R-4
Molded expanded polystyrene (EPS) high-density 0.70 R-4.2 22-32[1]
Air-entrained concrete[4] 0.69 R-3.90
Home Foam[5] 0.69 R-3.9
Fiberglass batts[6] 0.55–0.76 R-3.1–R-4.3
Cotton batts (Blue Jean insulation)[7] 0.65 R-3.7
Molded expanded polystyrene (EPS) low-density 0.65 R-3.85
Icynene spray[3] 0.63 R-3.6
Open-cell polyurethane spray foam 0.63 R-3.6
Cardboard 0.52–0.7 R-3–R-4
Rock and slag wool batts 0.52–0.68 R-3–R-3.85
Cellulose loose-fill[8] 0.52–0.67 R-3–R-3.8
Cellulose wet-spray[8] 0.52–0.67 R-3–R-3.8
Rock and slag wool loose-fill[9] 0.44–0.65 R-2.5–R-3.7
Fiberglass loose-fill[9] 0.44–0.65 R-2.5–R-3.7
Polyethylene foam 0.52 R-3
Cementitious foam 0.35–0.69 R-2–R-3.9
Perlite loose-fill 0.48 R-2.7
Wood panels, such as sheathing 0.44 R-2.5 9 [10]
Fiberglass rigid panel 0.44 R-2.5
Vermiculite loose-fill 0.38–0.42 R-2.13–R-2.4
Vermiculite[4] 0.38 R-2.13 16-17[1]
Straw bale[11] 0.26 R-1.45 16-22[1]
Papercrete[12] R-2.6-R-3.2
Softwood (most)[13] 0.25 R-1.41 7.7 [10]
Wood chips and other loose-fill wood products 0.18 R-1
Snow 0.18 R-1
Hardwood (most)[13] 0.12 R-0.71 5.5 [10]
Brick 0.030 R-0.2 1.3-1.8[10]
Glass[2] 0.025 R-0.14
Poured concrete[2] 0.014 R-0.08 0.43-0.87 [10]
  1. ^ a b c d e f Energy Saving Trust. "CE71 - Insulation materials chart – thermal properties and environmental ratings". 
  2. ^ a b c d Ristinen, Robert A., and Jack J. Kraushaar. Energy and the Environment. 2nd ed. Hoboken, NJ: John Wiley & Sons, Inc., 2006.
  3. ^ a b Icynene product information
  4. ^ a b E-Star Colorado. Energy Saving Calculations. Energy Living Alliance, 2008. Web. 27 Oct. 2009. <http://www.e-star.com/ecalcs/table_rvalues.html>.
  5. ^ Home Foam Product Specifications
  6. ^ Fiberglass Batts R Value Information
  7. ^ Environmental Home Center Cotton Batt Information
  8. ^ a b ICC Legacy Report ER-2833 - Cocoon Thermal and Sound Insulation Products, ICC Evaluation Services, Inc., http://www.icc-es.org
  9. ^ a b DOE Handbook.Link text
  10. ^ a b c d e Brian Anderson (2006). "Conventions for U-value calculations". 
  11. ^ http://www.buildinggreen.com/auth/article.cfm?fileName=070902b.xml
  12. ^ http://www.masongreenstar.com/sites/default/files/Research_Report_Thermal_17p.pdf
  13. ^ a b http://www.energysavers.gov/your_home/designing_remodeling/index.cfm/mytopic=10170
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