Skip to main content
U.S. flag

An official website of the United States government

 Thermal Insulation System Made of Wood and Paper for Use in Residential Construction


Zoltán Pásztory
Tibor Horváth



Publication type:

Scientific Journal (JRNL)

Primary Station(s):

Forest Products Laboratory


Forest Products Journal


This article introduces an insulation system that takes advantage of the low thermal conductivity of still air and is made of wood and paper. The insulation, called the Mirrorpanel, is constructed as a panel of closely spaced layers of coated paper and held together in a frame of wood or fiberboard. Panels have been fabricated and tested at the laboratory scale, whole wall scale, and the building scale. A 1.2-m by 2-m by 0.185-m-thick wall section had an apparent thermal conductance of only 0.204 W m-2 K-1 including the structural wood frame, which is equivalent to a US R-value of 27.9 h ft2 °F Btu-1 (3.8 h ft2 °F Btu-1 in.-1 for the 7.3-in.-thick wall section). The Mirrorpanel could be used as an environmentally friendly alternative to foam insulation in high-performance residential buildings and would fulfill the continuous insulation requirements in the 2012 version of the International Energy Conservation Code.


Pásztory, Zoltán; Horváth, Tibor; Glass, Samuel V.; Zelinka, Samuel L. 2015. Thermal isulation system made of wood and paper for use in residential construction. Forest Products Journal. 65(7-8): 352-357.


Publication Notes

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.