Precut panels of 1 lb EPS Foam are being used to insulate the roof of this house in the country. The recycled EPS panels are 4” x 48” x 60” providing an R-15.4 R-Value. Here is what the customer had to say. “Judy and I are about 2/3 of way through our EPS project. We are using the panels to insulate the ceiling of our house in the country. The panels fit great- and we are very happy with the results!