List of insulation materials

This is a list of insulation materials used around the world.

Typical R-values are given for various materials and structures as approximations based on the average of available figures and are sorted by lowest value. R-value at 1 m gives R-values normalised to a 1 metre (3 ft 3 in) thickness and sorts by median value of the range.

Material Thickness R-value R-value at 1 m
(m2·K/W)
(cm) (in) (m2·K/W) (ft2·°F·h/BTU)
Vacuum insulated panel 2.541 5.28–8.814–66[1]208–346
Silica aerogel 2.541 1.7610.3[2]69
Polyurethane rigid panel (CFC/HCFC-expanded) initial 2.541 1.23–1.417–848–56
Polyurethane rigid panel (CFC/HCFC-expanded) aged 5–10 years 2.541 1.106.2543
Polyurethane rigid panel (pentane-expanded) initial 2.541 1.206.847
Polyurethane rigid panel (pentane-expanded) aged 5–10 years 2.541 0.975.538
Foil-faced polyurethane rigid panel (pentane-expanded) 2.541 1.1–1.245–48 [3]
Foil-faced polyisocyanurate rigid panel (pentane-expanded) initial 2.541 1.206.855 [3]
Foil-faced polyisocyanurate rigid panel (pentane-expanded) aged 5–10 years 2.541 0.975.538
Polyisocyanurate spray foam 2.541 0.76–1.464.3–8.330–57
Closed-cell polyurethane spray foam 2.541 0.97–1.145.5–6.538–45
Phenolic spray foam 2.541 0.85–1.234.8–733–48
Thinsulate clothing insulation[4] 2.541 0.28–0.511.6–2.911–20
Urea-formaldehyde panels 2.541 0.88–1.065–635–42
Drywall[5] 2.541 0.15.96.2
Urea foam[6] 2.541 0.925.2536.4
Extruded expanded polystyrene (XPS) high-density 2.541 0.88–0.955–5.426–40[3]
Polystyrene board[6] 2.541 0.885.0035
Phenolic rigid panel 2.541 0.70–0.884–528–35
Urea-formaldehyde foam 2.541 0.70–0.814–4.628–32
High-density fiberglass batts 2.541 0.63–0.883.6–525–35
Extruded expanded polystyrene (XPS) low-density 2.541 0.63–0.823.6–4.725–32
Icynene loose-fill (pour-fill)[7] 2.541 0.70428
Molded expanded polystyrene (EPS) high-density 2.541 0.704.2 22–32[3]
Rice hulls[8] 2.541 0.503.024
Fiberglass batts[9] 2.541 0.55–0.763.1–4.322–30
Cotton batts (blue jean insulation)[10][11] 2.541 0.653.726
Molded expanded polystyrene (EPS) low-density 2.541 0.653.8526
Sheep's wool batt[12] 2.541 0.653.726
Icynene spray[7][13] 2.541 0.633.625
Open-cell polyurethane spray foam 2.541 0.633.625
Cardboard 2.541 0.52–0.73–420–28
Rock and slag wool batts 2.541 0.52–0.683–3.8520–27
Cellulose loose-fill[14] 2.541 0.52–0.673–3.820–26
Cellulose wet-spray[14] 2.541 0.52–0.673–3.820–26
Rock and slag wool loose-fill[15] 2.541 0.44–0.652.5–3.717–26
Fiberglass loose-fill[15] 2.541 0.44–0.652.5–3.717–26
Polyethylene foam 2.541 0.52320
Cementitious foam 2.541 0.35–0.692–3.914–27
Perlite loose-fill 2.541 0.482.719
Wood panels, such as sheathing 2.541 0.442.517 (9[16])
Fiberglass rigid panel 2.541 0.442.517
Vermiculite loose-fill 2.541 0.38–0.422.13–2.415–17
Vermiculite[17] 2.541 0.382.1316–17[3]
Straw bale[18] 2.541 0.261.4516–22[3]
Papercrete[19] 2.541 2.6–3.218–22
Softwood (most)[20] 2.541 0.251.417.7 [16]
Wood chips and other loose-fill wood products 2.541 0.1817.1
Aerated/cellular concrete (5% moisture) 2.541 0.1817.1
Snow 2.541 0.1817.1
Hardwood (most)[20] 2.541 0.120.715.5 [16]
Brick 2.541 0.0300.21.3–1.8[16]
Glass[6] 2.541 0.0250.140.98
Uninsulated glass pane 0.60.25 0.160.910.98
Insulated glass (double glazed) 1.6–1.90.63–0.75 0.35240
Insulated glass (double glazed, hard low-e) 1.6–1.90.63–0.75 0.673.877
Insulated glass (double glazed, soft low-e) 1.6–1.90.63–0.75 0.905.11100
Insulated glass (triple glazed) 3.2–3.81.2–1.5 0.673.840
Poured concrete[6] 2.541 0.0140.080.43–0.87 [16]
Material Thickness R-value R-value at 1 m
(m2·K/W)
(cm) (in) (m2·K/W) (ft2·°F·h/BTU)

References
  1. https://b2b-api.panasonic.eu/file_stream/pids/fileversion/3247
  2. http://www.starch.dk/private/energy/img/Spaceloft_DS.pdf
  3. Energy Saving Trust. "CE71 – Insulation materials chart – thermal properties and environmental ratings". Energysavingtrust.org.uk. Retrieved 2014-02-23.
  4. "Archived copy" (PDF). Archived from the original (PDF) on 2014-10-21. Retrieved 2014-10-14.{{cite web}}: CS1 maint: archived copy as title (link)
  5. http://coloradoenergy.org/procorner/stuff/r-values.htm
  6. Ristinen, Robert A., and Jack J. Kraushaar. Energy and the Environment. 2nd ed. Hoboken, NJ: John Wiley & Sons, Inc., 2006.
  7. "The Icynene Insulation System". June 12, 2008. Archived from the original on June 12, 2008. Retrieved August 9, 2009.
  8. "Rice hulls in construction – Appropedia: The sustainability wiki". Appropedia. 2013-02-23. Retrieved 2014-02-23.
  9. "Products | Johns Manville Insulation". Jminsulation.com.au. Archived from the original on 2014-02-26. Retrieved 2014-02-23.
  10. "Green Building Materials, Green Products". Greendepot.com. Retrieved 24 February 2019.
  11. "What is Green Living?". Archived from the original on September 29, 2008. Retrieved May 8, 2009.
  12. "sheep's wool specifications" (PDF).
  13. "Portfolio of Spray Foam Insulation Products | Icynene". Archived from the original on 2014-07-23. Retrieved 2014-07-17.
  14. "ICC Legacy Report ER-2833 – Cocoon Thermal and Sound Insulation Products". ICC Evaluation Services, Inc. Retrieved 2014-02-23.
  15. "Buildings Energy Data Book". Buildingsdatabook.eren.doe.gov. Archived from the original on 2014-02-27. Retrieved 2014-02-23.
  16. Brian Anderson (2006). "Conventions for U-value calculations" (PDF). Bre.co.uk. Retrieved 2014-02-23.
  17. "Evergreen Insulation - Types of insulation and R-Values". 27 July 2013. Retrieved 27 August 2021.
  18. "R-Value of Straw Bales Lower Than Previously Reported – EBN: 7:9". Buildinggreen.com. September 1, 1998. Retrieved 2018-10-03.
  19. "Archived copy" (PDF). Archived from the original (PDF) on 2014-07-07. Retrieved 2014-07-21.{{cite web}}: CS1 maint: archived copy as title (link)
  20. "Home Design & Remodeling | Department of Energy". Energysavers.gov. Retrieved 2014-02-23.
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