Foam is known as closed-cell because the air-trapping cells are ...

[lunatika]

Foam is known as closed-cell because the air-trapping cells are sealed completely and tightly packed.
 
  Indicate whether the statement is true or false

Question 2

The ________ is a group of materials that work together to keep the indoor environment separated from the outdoor environment.
 
  A) Pressure boundary B) House as a system
  C) Heat recovery system D) Building envelope

[moormoney]

Answer to Question 1

TRUE

Answer to Question 2

D

[lunatika]

Thanks for the timely response, appreciate it

[marict]

YES! Correct, THANKS for helping me on my review