Rigid insulation is one of the best tools to reduce your energy costs.
Foam board insulation high r value.
R 0 77 30 phenolic foam insulation r values.
Very good air bypass leak sealing properties.
You can even place it under the foundation slab.
Corrosion problems when in contact with steel roofing moisture.
There are three basic foam insulation board products on the.
4 5 21.
Because of this i often get questions about which type of foam board insulation to use and what r values these products provide.
4 8 7 21.
Phenolic foam spray insulation.
High r cw plus insulation is a rigid closed cell xps board.
Foam board insulation types.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
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.
They keep your home at a comfortable temperature without the need to crank your heat.
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.
Rigid foam insulation also known as insulating boards provide high r values.
Barrier ultra r super high r building panels produced by glacier bay use aerogel and are rated up to r 30 per inch or in barrier ultra r panels r 50 per inch.
Install it anywhere from the roof to the foundation.
Foamular high r cw plus insulation combines outstanding moisture resistance with excellent thermal performance.