Insulation Thickness Rigid Insulation R Value Chart

In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and.

Insulation thickness rigid insulation r value chart. A higher r value means that the insulation will do a better job of holding in conditioned air whether that s heat in the winter or cool air in the summer. Our r value guide to rigid insulation includes the doe s recommended insulation by zone chart r value calculator and base building material r values chart. The common denominator among varieties of insulation is the r value. Polyiso insulation thickness r value chart.

Notes to the table above. 1 844 446 7858 my account. As a benchmark one inch of solid wood has an r value of 1. Polyiso rigid insulation r value chart written by kupis on may 7 2020 in chart r value chart caflei closed cell and open insulation r values in pir roof insulation embly 5 interior insulated cmu wall gm 0702 to insulating sheathing.

For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. Understanding r value thursday december 13 2018 what does r value mean.