glass-fiber insulation

  • 111R-Value —   A measure of the capacity of a material to resist heat transfer. The R Value is the reciprocal of the conductivity of a material (U Value). The larger the R Value of a material, the greater its insulating properties.   ***   A measure of a… …

    Energy terms

  • 112polyester resin — noun or polyester plastic : any of various synthetic resins or plastics consisting of or made from polyesters: as a. : alkyd b. : a resin that has the same chemical composition as the common polyester fiber but that is extruded as a film (as for… …

    Useful english dictionary