Foam Board Insulation Rigid Insulation R Value Chart

Very good air bypass leak sealing properties.

Foam board insulation rigid insulation r value chart.

There is also less waste with fiberglass insulation. Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. Phenolic foam spray insulation. There are three basic foam insulation board products on the.

I ve written several posts about how to insulation basement walls in which i promote the use of foam board insulation as the first line of defense against moisture and mold. 4 8 7 21. Fiberglass insulation is less than half the price of rigid foam insulation when calculated by r value per square foot. R 0 77 30 phenolic foam insulation r values.

For example insulating a 10 square foot wall area to r 15 costs about 3 40 to 4 00 with fiberglass insulation while a comparable r value for rigid foam costs roughly 10. 4 5 21. Foam board insulation types. 8 3 4 4 8 2 20.

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. 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. 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.