List of insulation materials

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R-values per inch given in SI and imperial units. In practice, the values for the materials will have been obtained using different methods. Typical values are approximations based on the average of available figures. Clicking on the RSI column sorts by median value of the range. Clicking on the R-value column sorts by lowest value.
Material RSI per inch (m2·K/(W·in)) R-value per inch (ft2·°F·h/(BTU·in)) RSI per metre (m·K/W)
Vacuum insulated panel 5.28–8.8 R-30–R-50 208–346
Silica aerogel 1.76 R-10 69
Polyurethane rigid panel (CFC/HCFC expanded) initial 1.23–1.41 R-7–R-8 48–56
Polyurethane rigid panel (CFC/HCFC expanded) aged 5–10 years 1.10 R-6.25 43
Polyurethane rigid panel (pentane expanded) initial 1.20 R-6.8 47
Polyurethane rigid panel (pentane expanded) aged 5–10 years 0.97 R-5.5 38
Foil faced Polyurethane rigid panel (pentane expanded) 1.1–1.2 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 38
Polyisocyanurate spray foam 0.76–1.46 R-4.3–R-8.3 30–57
Closed-cell polyurethane spray foam 0.97–1.14 R-5.5–R-6.5 38–45
Phenolic spray foam 0.85–1.23 R-4.8–R-7 33–48
Thinsulate clothing insulation[2] 0.28-0.51 R-1.6–R-2.9 11–20
Urea-formaldehyde panels 0.88–1.06 R-5–R-6 35–42
Urea foam[3] 0.92 R-5.25 36.4
Extruded expanded polystyrene (XPS) high-density 0.88–0.95 R-5–R-5.4 26-40[1]
Polystyrene board[3] 0.88 R-5.00 35
Phenolic rigid panel 0.70–0.88 R-4–R-5 28–35
Urea-formaldehyde foam 0.70–0.81 R-4–R-4.6 28–32
High-density fiberglass batts 0.63–0.88 R-3.6–R-5 25–35
Extruded expanded polystyrene (XPS) low-density 0.63–0.82 R-3.6–R-4.7 25–32
Icynene loose-fill (pour fill)[4] 0.70 R-4 28
Molded expanded polystyrene (EPS) high-density 0.70 R-4.2 22-32[1]
Home Foam[5] 0.69 R-3.9 27.0
Rice hulls[6] 0.50 R-3.0 24
Fiberglass batts[7] 0.55–0.76 R-3.1–R-4.3 22–30
Cotton batts (Blue Jean insulation)[8][9] 0.65 R-3.7 26
Molded expanded polystyrene (EPS) low-density 0.65 R-3.85 26
Icynene spray[4][10] 0.63 R-3.6 25
Open-cell polyurethane spray foam 0.63 R-3.6 25
Cardboard 0.52–0.7 R-3–R-4 20–28
Rock and slag wool batts 0.52–0.68 R-3–R-3.85 20–27
Cellulose loose-fill[11] 0.52–0.67 R-3–R-3.8 20–26
Cellulose wet-spray[11] 0.52–0.67 R-3–R-3.8 20–26
Rock and slag wool loose-fill[12] 0.44–0.65 R-2.5–R-3.7 17–26
Fiberglass loose-fill[12] 0.44–0.65 R-2.5–R-3.7 17–26
Polyethylene foam 0.52 R-3 20
Cementitious foam 0.35–0.69 R-2–R-3.9 14–27
Perlite loose-fill 0.48 R-2.7 19
Wood panels, such as sheathing 0.44 R-2.5 9 [13]
Fiberglass rigid panel 0.44 R-2.5 17
Vermiculite loose-fill 0.38–0.42 R-2.13–R-2.4 15–17
Vermiculite[14] 0.38 R-2.13 16-17[1]
Straw bale[15] 0.26 R-1.45 16-22[1]
Papercrete[16] R-2.6-R-3.2
Softwood (most)[17] 0.25 R-1.41 7.7 [13]
Wood chips and other loose-fill wood products 0.18 R-1 7.1
Aerated/Cellular Concrete (5% moisture) 0.18 R-1 7.1
Snow 0.18 R-1 7.1
Hardwood (most)[17] 0.12 R-0.71 5.5 [13]
Brick 0.030 R-0.2 1.3-1.8[13]
Glass[3] 0.025 R-0.14 0.98
Poured concrete[3] 0.014 R-0.08 0.43-0.87 [13]


References

  1. ^ a b c d e f Energy Saving Trust. "CE71 - Insulation materials chart – thermal properties and environmental ratings". Energysavingtrust.org.uk. Retrieved 2014-02-23.
  2. ^ http://www.indapac.com/docs/3M_Thin_TypeG.pdf
  3. ^ a b c d Ristinen, Robert A., and Jack J. Kraushaar. Energy and the Environment. 2nd ed. Hoboken, NJ: John Wiley & Sons, Inc., 2006.
  4. ^ a b https://web.archive.org/web/20080612090032/http://www.icynene.com/InsulationSystem.aspx. Archived from the original on June 12, 2008. Retrieved August 9, 2009. {{cite web}}: Missing or empty |title= (help); Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  5. ^ "Elastochem Specialty Chemicals | Foams: Spray Foam Insulation, Injection Foam and Pour in Place Foam". Elastochem-ca.com. Retrieved 2014-02-23.
  6. ^ "Rice hulls in construction - Appropedia: The sustainability wiki". Appropedia. 2013-02-23. Retrieved 2014-02-23.
  7. ^ "Products | Johns Manville Insulation". Jminsulation.com.au. Retrieved 2014-02-23.
  8. ^ Greendepot. "UltraTouch Recycled Cotton Insulation".
  9. ^ https://web.archive.org/web/20080929071138/http://www.environmentalhomecenter.com/shop.mv?CatCode=PRODUCT&ProdCode=COTTON_INSULATION. Archived from the original on September 29, 2008. Retrieved May 8, 2009. {{cite web}}: Missing or empty |title= (help); Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  10. ^ ICYNENE Inc. "Icynene’s Product Portfolio".
  11. ^ a b "ICC Legacy Report ER-2833 - Cocoon Thermal and Sound Insulation Products". ICC Evaluation Services, Inc. Retrieved 2014-02-23.
  12. ^ a b "Buildings Energy Data Book". Buildingsdatabook.eren.doe.gov. Retrieved 2014-02-23.
  13. ^ a b c d e Brian Anderson (2006). "Conventions for U-value calculations" (PDF). Bre.co.uk. Retrieved 2014-02-23.
  14. ^ [[5:54:59 μμ] http://www.coloradoenergy.org/procorner/stuff/r-values.htm] Archived July 27, 2013, at the Wayback Machine
  15. ^ "R-Value of Straw Bales Lower Than Previously Reported - EBN: 7:9". Buildinggreen.com. Retrieved 2014-02-23.
  16. ^ [1]
  17. ^ a b "Home Design & Remodeling | Department of Energy". Energysavers.gov. Retrieved 2014-02-23.
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