Which of the following plastic foam insulation contains air within its voids?
A)Expanded polystyrene (EPS)board (bead board)
B)Polyisocyanurate board (ISO board)
C)Extruded polystyrene (XPS)board

Question

Quizplus · Accepted Answer

Expanded polystyrene (EPS) board, also known as bead board, contains air within its voids. This is because the beads of polystyrene are expanded with steam, which creates a cellular structure with voids filled with air. Polyisocyanurate board (ISO board) and extruded polystyrene (XPS) board have a different structure and do not have air within their voids.

Which of the Following Plastic Foam Insulation Contains Air Within