This video shows an example of a home that has rigid foam installed on it but not quite the way we would recommend.
Rigid foam on attic walls behind celotex.
However each material has its own specialty.
Attach the tongue and groove insulation boards to the concrete wall with adhesive.
For new construction use rigid boards to insulate slabs and the outside of foundation walls.
Celotex fiberboard is one of the most popular materials for insulation in the class of fiberboard.
Use a premade kit for this type of project.
For example rigid foam is mostly used for basement wall insulation due to its ability to resist moisture.
Basically both materials are used for residential.
If you are wanting to create a thermal br.
For a basement remodeling project consider insulating basement walls with foam board.
Celotex dow polyisocyanurate insulating foam board foam board properties history asbestos facings.
This article gives the history and properties of celotex thermax and other foam board insulating products.
On the other hand there is the rigid foam as its competitor.