1) Composite material 2) Concrete
Found on
https://www.crosswordclues.com/clue/thermasave
ThermaSAVE is a panel building system which uses a 4 to 12-inch-thick core of expanded polystyrene (similar to Styrofoam) sandwiched between two sheets of cellulose fiber-reinforced cement board varying in thickness from 3/8 to 7/16 inch, depending on structural requirements. This creates a `stress skinned` panel, also known as structural insula.....
Found on
http://en.wikipedia.org/wiki/ThermaSAVE
No exact match found.
