Expanded polystyrene (EPS) foam billets alone have R-values
of 4 to 7 per inch.
Those panels with low R-value
can produce condensation or frost buildup on the door due to a lower surface temperature on the warm side.
The insulation adds to the R-value
of the roof and provides a solid substrate for the single-ply system.
This case, consisting of one web and two CLBs, produced an R-value
of particular interest.
The thousands of linear feet of pipe at the Woodinville and Portsmouth breweries are insulated with Styrofoam brand insulation, an extruded polystyrene insulation that has a rigid, closed-cell structure that resists water and moisture vapor and maintains R-value
within the service temperature range of -297 to +160 degrees Fahrenheit.
Most of the changes to R-value
requirements occurred in Zone-2, which encompasses most of Northern Ontario.
The Evaluation Report confirms a tested R-value
This next-generation product builds upon the Neopor brand, and delivers the highest true R-value
performance of R-5 per inch.
Uses approximately 30 percent less material than other rigid foam insulation to achieve the same R-value
, 1 percent maximum water absorption by volume, Incorporates a new polymeric flame retardant (PolyFR), Earned GREENBGUARD Gold Certification, Contributes points towards builder s LEEDA certification.
Griffiths and Zuluaga (2004) used a two-dimensional, steady-state FEM to calculate the effective R-value
of ducts buried under three levels of loose-fill insulation, as shown in Figure 1.
roof now has an R-value
of 38, making it extremely energy efficient.
4" thick, moisture-resistant, closed-cell foam core panel with damage resistant polymer interior facing providing high R-value
and consistent temperature control.